/* =========================================
   GLOBAL STYLES & DESIGN SYSTEM
   ========================================= */

:root {
  --royal-blue: #1E3A8A;
  --deep-navy: #0B1F3A;
  --electric-blue: #3B82F6;
  --light-blue: #60A5FA;
  --cool-grey: #E5E7EB;
  --silver: #F3F4F6;
  --white: #FFFFFF;
  --text-dark: #0B1F3A;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;
  --success: #10B981;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(11,31,58,0.10);
  --shadow-lg: 0 8px 32px rgba(11,31,58,0.14);
  --shadow-blue: 0 4px 24px rgba(59,130,246,0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 50px;
  --transition: 0.3s ease;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

ul {
  list-style: none;
}

/* =========================================
   TYPOGRAPHY
   ========================================= */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--deep-navy);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { color: var(--text-muted); line-height: 1.75; }

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--electric-blue);
  background: rgba(59,130,246,0.08);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: var(--deep-navy);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* =========================================
   LAYOUT
   ========================================= */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

/* =========================================
   BUTTONS
   ========================================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--electric-blue);
  color: var(--white);
  box-shadow: 0 2px 12px rgba(59,130,246,0.30), inset 0 1px 0 rgba(255,255,255,0.22);
}

.btn-primary:hover {
  background: var(--royal-blue);
  box-shadow: 0 6px 20px rgba(59,130,246,0.40), inset 0 1px 0 rgba(255,255,255,0.18);
  transform: translateY(-1px);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--electric-blue);
  border: 2px solid var(--electric-blue);
}

.btn-outline:hover {
  background: var(--electric-blue);
  color: var(--white);
  box-shadow: var(--shadow-blue);
  transform: translateY(-1px);
}

.btn-white {
  background: var(--white);
  color: var(--royal-blue);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  background: var(--silver);
  transform: translateY(-1px);
  color: var(--royal-blue);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.05rem;
}

.btn-whatsapp {
  background: #25D366;
  color: var(--white);
  box-shadow: 0 2px 12px rgba(37,211,102,0.30);
}

.btn-whatsapp:hover {
  background: #20BA5A;
  box-shadow: 0 4px 20px rgba(37,211,102,0.40);
  transform: translateY(-1px);
  color: var(--white);
}

/* =========================================
   NAVBAR
   ========================================= */

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 31, 58, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  height: 68px;
  gap: 0;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 28px;
}

.navbar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--electric-blue), var(--royal-blue));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: white;
  font-weight: 800;
}

.logo-text-group {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.navbar-logo .logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.navbar-logo .logo-text span {
  color: var(--electric-blue);
}

.logo-subtext {
  font-size: 0.52rem;
  font-weight: 500;
  color: rgba(255,255,255,0.42);
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-transform: uppercase;
  line-height: 1;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  justify-content: flex-start;
}

.navbar-nav a {
  color: rgba(255,255,255,0.68);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 7px 18px;
  border-radius: 50px;
  transition: all 0.22s ease;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.navbar-nav a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.10);
  box-shadow:
    0 2px 10px rgba(59,130,246,0.15),
    inset 0 1px 0 rgba(255,255,255,0.18),
    inset 0 -1px 0 rgba(0,0,0,0.08);
}

.navbar-nav a.active {
  color: var(--white);
  background: linear-gradient(135deg,
    rgba(59,130,246,0.38) 0%,
    rgba(30,58,138,0.45) 100%);
  box-shadow:
    0 2px 14px rgba(59,130,246,0.25),
    inset 0 1px 0 rgba(255,255,255,0.22),
    inset 0 -1px 0 rgba(0,0,0,0.12);
  border: 1px solid rgba(96,165,250,0.22);
}

/* ── Right-side actions — auth slot always reserves space ── */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* Reserve width so auth-state change never shifts the nav items */
.navbar-auth-ui {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 120px;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── Mobile nav ── */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: rgba(11,31,58,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 12px 16px 16px;
  gap: 3px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  color: rgba(255,255,255,0.72);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 50px;
  transition: all 0.22s ease;
}

.mobile-nav a:hover {
  background: rgba(255,255,255,0.08);
  color: var(--white);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12);
}

.mobile-nav a.active {
  color: var(--white);
  background: rgba(59,130,246,0.25);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}

/* =========================================
   FOOTER
   ========================================= */

.footer {
  background: var(--deep-navy);
  color: rgba(255,255,255,0.65);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
}

.footer-brand .logo-text span {
  color: var(--electric-blue);
}

.footer-brand p {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.7;
}

.footer-title {
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--electric-blue);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--electric-blue);
  color: var(--white);
}

.social-link {
  position: relative;
}

.social-link::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(11,31,58,0.92);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 5px 10px;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.social-link:hover::after {
  opacity: 1;
}

/* =========================================
   HERO SECTION
   ========================================= */

.hero {
  background: linear-gradient(135deg, var(--deep-navy) 0%, var(--royal-blue) 60%, #1d4ed8 100%);
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}

/* Decorative background pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 50%, rgba(59,130,246,0.18) 0%, transparent 60%),
                    radial-gradient(circle at 80% 20%, rgba(30,58,138,0.30) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59,130,246,0.18);
  border: 1px solid rgba(59,130,246,0.30);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(255,255,255,0.90);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--electric-blue);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  color: var(--electric-blue);
  position: relative;
}

.hero-description {
  color: rgba(255,255,255,0.72);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.12);
}

.stat-item .stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.stat-item .stat-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}

/* Hero visual / illustration side */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card-stack {
  position: relative;
  width: 340px;
  height: 380px;
}

.hero-card {
  position: absolute;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  padding: 24px;
  color: white;
}

.hero-card-main {
  width: 300px;
  top: 40px;
  left: 20px;
  background: rgba(255,255,255,0.10);
  z-index: 2;
}

.hero-card-back {
  width: 280px;
  top: 10px;
  left: 40px;
  z-index: 1;
  opacity: 0.5;
  transform: rotate(3deg);
}

.hero-card .card-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--light-blue);
  margin-bottom: 10px;
}

.hero-card h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 8px;
}

.hero-card p {
  color: rgba(255,255,255,0.60);
  font-size: 0.82rem;
}

.hero-card .card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.10);
}

.hero-card .card-rating {
  font-size: 0.82rem;
  color: #FCD34D;
}

.hero-card .card-students {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.50);
}

/* Floating badges on hero */
.floating-badge {
  position: absolute;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  box-shadow: var(--shadow-lg);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--deep-navy);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 3;
  animation: float 3s ease-in-out infinite;
}

.floating-badge.badge-top-right {
  top: 0;
  right: -20px;
}

.floating-badge.badge-bottom-left {
  bottom: 20px;
  left: -30px;
  animation-delay: 1.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* =========================================
   ORBIT SYSTEM — 3D single-ring (hero visual)
   ========================================= */

/* ── Orbit System ─────────────────────────────────────────────────────────────
   JS-driven 2D ellipse orbit. Cards live in screen space so they can never
   flip or mirror. The 3D feel comes entirely from scale, opacity, blur, and a
   bounded rotateY lean (≤±18°) — which never reaches the mirror threshold.
   ─────────────────────────────────────────────────────────────────────────── */

.orbit-system {
  position: relative;
  width: 560px;
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  perspective: 900px;
}

/* Flat ellipse that traces the orbit path — matches RX/RY in orbit-system.js */
.orbit-ring-visual {
  position: absolute;
  width: 460px;
  height: 158px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.13);
  pointer-events: none;
  box-shadow: inset 0 0 30px rgba(59,130,246,0.06);
}

/* Sun — always on top of all orbiting cards */
.orbit-sun {
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--electric-blue) 0%, var(--royal-blue) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  z-index: 10;
  box-shadow:
    0 0 0 10px rgba(59,130,246,0.12),
    0 0 0 22px rgba(59,130,246,0.06),
    0 0 50px rgba(59,130,246,0.40);
  animation: sun-pulse 3s ease-in-out infinite;
}

@keyframes sun-pulse {
  0%, 100% { box-shadow: 0 0 0 10px rgba(59,130,246,0.12), 0 0 0 22px rgba(59,130,246,0.06), 0 0 50px rgba(59,130,246,0.40); }
  50%       { box-shadow: 0 0 0 14px rgba(59,130,246,0.18), 0 0 0 30px rgba(59,130,246,0.09), 0 0 70px rgba(59,130,246,0.50); }
}

/* Orbit cards — transform/opacity/filter driven per-frame by JS */
.orbit-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 210px;
  will-change: transform, opacity, filter;
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  color: var(--white);
  box-shadow: 0 8px 32px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.10);
  user-select: none;
  /* JS sets the real transform on frame 1; start invisible to avoid flash */
  transform: translate(-50%, -50%);
  opacity: 0;
}

.orbit-card .card-tag {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.60);
  margin-bottom: 7px;
}

.orbit-card h4 {
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 5px;
  line-height: 1.3;
}

.orbit-card p {
  color: rgba(255,255,255,0.55);
  font-size: 0.75rem;
  line-height: 1.4;
  margin-bottom: 10px;
}

.orbit-card .card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.10);
}

.orbit-card .card-rating  { font-size: 0.75rem; color: #FCD34D; }
.orbit-card .card-students { font-size: 0.72rem; color: rgba(255,255,255,0.45); }


/* =========================================
   FEATURES SECTION
   ========================================= */

.features {
  background: var(--silver);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(59,130,246,0.20);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(30,58,138,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 20px;
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  line-height: 1.7;
}

/* =========================================
   COURSE CARD
   ========================================= */

.course-card {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.90);
  outline: 1px solid rgba(59,130,246,0.10);
  overflow: hidden;
  box-shadow:
    0 2px 8px rgba(11,31,58,0.07),
    0 1px 3px rgba(11,31,58,0.05),
    inset 0 1px 0 rgba(255,255,255,1);
  transition: transform 0.28s ease, box-shadow 0.28s ease, outline-color 0.28s ease;
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  transform: translateY(-6px);
  outline-color: rgba(59,130,246,0.30);
  box-shadow:
    0 16px 40px rgba(59,130,246,0.16),
    0 4px 12px rgba(11,31,58,0.10),
    inset 0 1px 0 rgba(255,255,255,1);
}

.course-card-image {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.course-card-image img,
.course-card-image .image-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-card-image .image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background: linear-gradient(135deg, var(--royal-blue), var(--electric-blue));
  position: relative;
}

/* Course thumbnail image from Cloudinary */
.card-course-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-level-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}

.course-level-badge.beginner   { background: rgba(16,185,129,0.92);  color: white; }
.course-level-badge.intermediate { background: rgba(245,158,11,0.92); color: white; }
.course-level-badge.advanced   { background: rgba(239,68,68,0.92);   color: white; }

/* Level tooltip */
.level-tooltip {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: rgba(11,31,58,0.92);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
  padding: 5px 10px;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  z-index: 20;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.course-level-badge:hover .level-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.course-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-category {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--electric-blue);
  margin-bottom: 8px;
}

.course-card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card-body .course-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}

.course-instructor {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.course-instructor strong {
  color: var(--text-dark);
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  font-size: 0.80rem;
  color: var(--text-muted);
}

.course-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.course-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 0;
  margin-top: auto;
}

.stars {
  color: #F59E0B;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.rating-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dark);
}

.rating-count {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.course-card-footer {
  padding: 14px 20px;
  border-top: 1px solid rgba(59,130,246,0.08);
  background: rgba(248,251,255,0.80);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

/* Reset global btn-whatsapp styles for the card icon variant */
.btn-wa-icon.btn-whatsapp {
  background: transparent;
  color: #25D366;
  box-shadow: none;
  border: 2px solid transparent;
}

.btn-wa-icon.btn-whatsapp:hover {
  background: transparent;
  color: #25D366;
}

/* View Details — fixed size, left-anchored, unaffected by WA button */
.course-card-footer .btn-primary {
  flex: 0 0 auto;
  border-radius: 10px;
  padding: 8px 16px;
  font-size: 0.85rem;
  transition: all 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.course-card-footer .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(59,130,246,0.48);
}

/* WhatsApp icon-only — secondary ghost style, outline + text on hover */
.btn-wa-icon {
  flex: 0 0 auto;
  gap: 0;
  padding: 0 10px;
  min-width: 36px;
  height: 36px;
  border-radius: 10px;
  overflow: hidden;
  background: transparent;
  color: #25D366;
  box-shadow: none;
  border: 2px solid transparent;
  transition:
    padding 0.28s cubic-bezier(0.34, 1.56, 0.64, 1),
    border-color 0.22s ease,
    box-shadow 0.22s ease,
    transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-wa-icon:hover {
  padding: 0 12px;
  border-color: #25D366;
  box-shadow: 0 0 0 3px rgba(37,211,102,0.15);
  transform: translateY(-1px);
  color: #25D366;
  background: transparent;
}

.btn-wa-icon .wa-label {
  max-width: 0;
  overflow: hidden;
  opacity: 0;
  white-space: nowrap;
  font-size: 0.85rem;
  font-weight: 600;
  margin-left: 0;
  transition:
    max-width 0.28s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.2s ease 0.08s,
    margin-left 0.28s ease;
}

.btn-wa-icon:hover .wa-label {
  max-width: 80px;
  opacity: 1;
  margin-left: 6px;
}

/* =========================================
   COURSES GRID
   ========================================= */

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 28px;
}

/* Filter bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--white);
  color: var(--text-muted);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--electric-blue);
  color: var(--white);
  border-color: var(--electric-blue);
  box-shadow: 0 2px 12px rgba(59,130,246,0.25);
}

.filter-label {
  display: inline-flex;
  align-items: center;
  color: var(--text-dark);
  margin-right: 4px;
}

/* =========================================
   CTA SECTION
   ========================================= */

.cta-section {
  background: linear-gradient(135deg, var(--deep-navy) 0%, var(--royal-blue) 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 30% 50%, rgba(59,130,246,0.20) 0%, transparent 60%),
                    radial-gradient(circle at 70% 50%, rgba(30,58,138,0.25) 0%, transparent 60%);
  pointer-events: none;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255,255,255,0.70);
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* =========================================
   ABOUT PAGE
   ========================================= */

.page-hero {
  background: linear-gradient(135deg, var(--deep-navy), var(--royal-blue));
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 80%, rgba(59,130,246,0.20) 0%, transparent 60%);
}

.page-hero h1 {
  color: var(--white);
  position: relative;
}

.page-hero p {
  color: rgba(255,255,255,0.70);
  font-size: 1.05rem;
  margin-top: 12px;
  position: relative;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 20px;
  position: relative;
}

.breadcrumb a {
  color: rgba(255,255,255,0.70);
}

.breadcrumb a:hover {
  color: var(--electric-blue);
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  margin-bottom: 16px;
}

.about-text p {
  margin-bottom: 16px;
}

.about-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-stat-box {
  background: linear-gradient(135deg, var(--royal-blue), var(--electric-blue));
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  color: white;
}

.about-stat-box:nth-child(2) {
  background: linear-gradient(135deg, var(--deep-navy), var(--royal-blue));
  margin-top: 24px;
}

.about-stat-box:nth-child(3) {
  background: linear-gradient(135deg, #0369a1, #0ea5e9);
  margin-top: -24px;
}

.about-stat-box:nth-child(4) {
  background: linear-gradient(135deg, var(--electric-blue), #818cf8);
}

.about-stat-box .num {
  font-size: 2rem;
  font-weight: 800;
  color: white;
  line-height: 1;
}

.about-stat-box .lbl {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.75);
  margin-top: 6px;
}

.mission-vision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.mv-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.mv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.mv-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--electric-blue), var(--royal-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.mv-card h3 {
  margin-bottom: 12px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.value-card {
  text-align: center;
  padding: 28px 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-card .icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.value-card h4 {
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.82rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  text-align: center;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 28px 20px;
  transition: all var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--royal-blue), var(--electric-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 16px;
  color: white;
}

.team-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.team-role {
  font-size: 0.82rem;
  color: var(--electric-blue);
  font-weight: 500;
}

/* =========================================
   CONTACT PAGE
   ========================================= */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: start;
}

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info p {
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(30,58,138,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item .info h4 {
  font-size: 0.9rem;
  margin-bottom: 3px;
}

.contact-item .info p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

.contact-form-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.contact-form-card h3 {
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 7px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-family: var(--font-sans);
  color: var(--text-dark);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--electric-blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: #065f46;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 16px;
}

.form-success.show {
  display: flex;
}

/* =========================================
   FLOATING WHATSAPP BUTTON
   ========================================= */

.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.whatsapp-float .wa-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.45);
  transition: all var(--transition);
  font-size: 1.5rem;
  color: white;
}

.whatsapp-float .wa-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 28px rgba(37,211,102,0.55);
}

.whatsapp-float .wa-tooltip {
  background: var(--deep-navy);
  color: white;
  font-size: 0.80rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  white-space: nowrap;
}

.whatsapp-float:hover .wa-tooltip {
  opacity: 1;
}

/* Pulse ring on WA button */
.whatsapp-float .wa-btn::after {
  content: '';
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(37,211,102,0.35);
  animation: wa-pulse 2s ease infinite;
}

@keyframes wa-pulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* =========================================
   COURSES PAGE SPECIFIC
   ========================================= */

.courses-page .filter-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.courses-page-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
  align-items: start;
}

.sidebar-section h4 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.sidebar-check-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-check-list label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-dark);
  cursor: pointer;
}

.sidebar-check-list input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--electric-blue);
  cursor: pointer;
}

.results-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 10px;
}

.results-bar .results-count {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.results-bar .results-count strong {
  color: var(--text-dark);
}

/* ---- Custom glass sort dropdown ---- */
.sort-dropdown {
  position: relative;
}

.sort-trigger {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1.5px solid rgba(59,130,246,0.22);
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  color: var(--text-dark);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  box-shadow:
    0 2px 10px rgba(11,31,58,0.09),
    inset 0 1px 0 rgba(255,255,255,1);
  transition: all 0.22s ease;
  white-space: nowrap;
}

.sort-trigger:hover,
.sort-trigger.open {
  border-color: rgba(59,130,246,0.50);
  background: rgba(255,255,255,0.92);
  box-shadow:
    0 4px 18px rgba(59,130,246,0.16),
    inset 0 1px 0 rgba(255,255,255,1);
  color: var(--electric-blue);
}

.sort-chevron {
  transition: transform 0.22s ease;
  opacity: 0.6;
}

.sort-trigger.open .sort-chevron {
  transform: rotate(180deg);
  opacity: 1;
}

.sort-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: rgba(255,255,255,0.82);
  backdrop-filter: blur(28px) saturate(1.5);
  -webkit-backdrop-filter: blur(28px) saturate(1.5);
  border: 1px solid rgba(255,255,255,0.95);
  border-radius: var(--radius-md);
  box-shadow:
    0 12px 40px rgba(11,31,58,0.14),
    0 2px 8px rgba(59,130,246,0.08),
    inset 0 1px 0 rgba(255,255,255,1);
  padding: 6px;
  z-index: 999;
  opacity: 0;
  transform: translateY(-8px) scale(0.96);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.sort-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.sort-option {
  display: block;
  width: 100%;
  padding: 10px 14px;
  border: none;
  background: transparent;
  text-align: left;
  font-size: 0.88rem;
  font-family: var(--font-sans);
  color: var(--text-dark);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.sort-option:hover {
  background: rgba(59,130,246,0.08);
  color: var(--electric-blue);
}

.sort-option.active {
  background: rgba(59,130,246,0.10);
  color: var(--electric-blue);
  font-weight: 600;
}

/* =========================================
   TESTIMONIALS
   ========================================= */

.testimonials {
  background: var(--silver);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  color: #F59E0B;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--royal-blue), var(--electric-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: white;
  font-weight: 600;
  flex-shrink: 0;
}

.author-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* =========================================
   UTILITY CLASSES
   ========================================= */

.text-center { text-align: center; }
.text-blue { color: var(--electric-blue); }
.bg-silver { background: var(--silver); }

/* Courses section — off-white textured background */
.courses-section {
  background: linear-gradient(145deg, #e8f0fe 0%, #eef4ff 30%, #f4f8ff 60%, #f9fbff 80%, #ffffff 100%);
}


/* =========================================
   RESPONSIVE
   ========================================= */

/* Safety net — prevent any overflowing element from creating horizontal scroll */
html, body { overflow-x: hidden; }

/* ── 1024px — Tablet landscape ── */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-visual { display: none; }
  .hero-description { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }

  .about-intro-grid { grid-template-columns: 1fr; }
  .about-visual { display: none; }

  .courses-page-layout { grid-template-columns: 1fr; }
  .filter-sidebar {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
  }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .values-grid     { grid-template-columns: repeat(2, 1fr); }
  .team-grid       { grid-template-columns: repeat(2, 1fr); }

  /* Testimonials: 2-col at tablet instead of jumping 3→1 */
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }

  /* Features: 2-col at tablet — 3 tight columns at 768-1024px hurt readability */
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 768px — Tablet portrait / large mobile ── */
@media (max-width: 768px) {
  .section { padding: 56px 0; }

  /* Hide desktop nav pill + auth chip on mobile — mobile-nav handles them */
  .navbar-nav,
  .navbar-auth-ui {
    display: none;
  }
  .nav-toggle { display: flex; }
  .navbar-actions { margin-left: auto; gap: 0; }
  .navbar-inner { gap: 0; }

  .mission-vision-grid { grid-template-columns: 1fr; }
  .contact-grid        { grid-template-columns: 1fr; }
  .form-row            { grid-template-columns: 1fr; }

  /* Features & testimonials: 2-col at this range (overrides tablet value, which stays 2 anyway) */
  .features-grid     { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }

  /* Courses: 2-col at 480-768px — much better than 1 col on a tablet */
  .courses-grid { grid-template-columns: repeat(2, 1fr); }

  .footer-grid   { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  /* Page hero */
  .page-hero { padding: 56px 0; }

  /* Course detail hero actions — centre-align to match single-col layout */
  .cd-hero-actions { align-items: center; }

  /* Results bar: stack count + sort on narrow screens */
  .results-bar { flex-direction: column; align-items: flex-start; }
  .sort-select  { width: 100%; }
}

/* ── 480px — Mobile ── */
@media (max-width: 480px) {
  .container { padding: 0 16px; }

  /* Tighter vertical rhythm on small screens */
  .section        { padding: 48px 0; }
  .section-header { margin-bottom: 32px; }
  .page-hero      { padding: 48px 0; }

  /* Hero stats stack vertically */
  .hero-stats { flex-direction: column; gap: 16px; }

  /* Hero action buttons: full-width stacked on mobile */
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .hero-actions .btn { justify-content: center; width: 100%; }

  /* CTA actions */
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 360px; justify-content: center; }

  /* Features: 1-col on phones */
  .features-grid     { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }

  /* Courses: 1-col on phones */
  .courses-grid { grid-template-columns: 1fr; }

  /* Values: keep 2-col on mobile — 1-col wastes too much space */
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid   { grid-template-columns: repeat(2, 1fr); }

  /* Contact form: reduce inner padding on small screens */
  .contact-form-card { padding: 24px 18px; }

  /* Filter buttons: larger touch target */
  .filter-btn { padding: 10px 16px; min-height: 44px; }

  /* Course detail hero actions: full-width stacked */
  .cd-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cd-hero-actions .btn { justify-content: center; width: 100%; }

  /* Profile stats: tighter gap & allow wrap on narrow screens */
  .profile-stats { gap: 20px; flex-wrap: wrap; }
}

/* ── Mobile orbit carousel (≤520px) ── */
@media (max-width: 520px) {
  /* Show the orbit animation above the hero text on phones */
  .hero-visual {
    display: flex !important;
    order: -1;
    flex-direction: column;
    align-items: center;
    margin-bottom: 8px;
  }

  /* Scale the orbit down to fit a phone screen — JS reads offsetWidth and
     switches to RX=136/RY=47 automatically */
  .orbit-system {
    width: 320px;
    height: 230px;
  }

  .orbit-ring-visual {
    width: 272px;
    height: 94px;
  }

  .orbit-sun {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }

  .orbit-card {
    width: 148px;
    padding: 10px 12px;
  }
  .orbit-card h4 { font-size: 0.84rem; }
  .orbit-card p  { font-size: 0.70rem; }

}

/* ── 360px — Very small phones (Galaxy S8, iPhone SE 1st gen) ── */
@media (max-width: 360px) {
  .container { padding: 0 14px; }

  /* Logo text shrinks a little so it doesn't push into hamburger */
  .navbar-logo .logo-text { font-size: 1rem; }

  /* At 360px, 2-col value/team cards can be very cramped — go to 1 col */
  .values-grid { grid-template-columns: 1fr; }
  .team-grid   { grid-template-columns: 1fr; }

  /* Modal form row: always 1-col */
  .modal-form-row { grid-template-columns: 1fr; }

  /* Give cert grid single column at this very narrow width */
  .cert-grid { grid-template-columns: 1fr; }
}

/* =========================================
   COURSE CARD — LINK EXTENSIONS
   (for "View Details" title link & image-as-link)
   ========================================= */

/* Image area is now an <a> tag — keep the same block behaviour */
a.course-card-image {
  display: block;
  text-decoration: none;
}

a.course-card-image:hover .image-placeholder {
  filter: brightness(1.08);
  transition: filter var(--transition);
}

/* Title link inside card body */
.course-title-link {
  color: var(--deep-navy);
  text-decoration: none;
  transition: color var(--transition);
}

.course-title-link:hover {
  color: var(--electric-blue);
}

/* =========================================
   COURSE DETAIL PAGE
   ========================================= */

/* --- Hero --- */
.cd-hero {
  padding: 72px 0 60px;
  position: relative;
  overflow: hidden;
}

/* Subtle dark overlay so text stays readable on any gradient */
.cd-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.38);
  pointer-events: none;
}

.cd-hero .container {
  position: relative;
  z-index: 1;
}

.cd-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.60);
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.cd-breadcrumb a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}

.cd-breadcrumb a:hover { color: var(--white); }

.cd-breadcrumb span { color: rgba(255,255,255,0.40); }

.cd-hero-inner {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 56px;
  align-items: center;
}

.cd-category-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  margin-bottom: 16px;
}

.cd-title {
  color: var(--white);
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  line-height: 1.2;
}

.cd-hero-desc {
  color: rgba(255,255,255,0.82);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 620px;
}

.cd-hero-meta {
  margin-bottom: 32px;
}

.cd-rating-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.cd-stars { font-size: 1rem; color: #FCD34D; }

.cd-rating-num {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.cd-rating-count {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
}

.cd-enrolled {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.60);
  border-left: 1px solid rgba(255,255,255,0.25);
  padding-left: 10px;
}

.cd-meta-pills {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.cd-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.88);
}

.cd-pill-icon { font-size: 0.85rem; }

.cd-hero-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.cd-hero-actions .btn {
  padding: 9px 20px;
  font-size: 0.88rem;
  border-radius: 10px;
}

/* Hero visual — floating course card */
.cd-emoji-card {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
}

.cd-emoji-icon {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  overflow: hidden;
}

/* Shared image style for all course-detail image slots */
.cd-course-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cd-emoji-card-body {
  padding: 20px;
}

.cd-cert-badge {
  font-size: 0.82rem;
  font-weight: 600;
  color: #FCD34D;
  margin-bottom: 16px;
}

.cd-quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
}

.cd-qstat-num {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
}

.cd-qstat-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.55);
  margin-top: 3px;
}

/* --- Two-column layout --- */
.cd-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

/* --- Content sections --- */
.cd-section {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.cd-section-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.cd-about-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.85;
}

/* --- What you'll learn grid --- */
.learn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 24px;
}

.learn-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-dark);
  line-height: 1.55;
}

.learn-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(59,130,246,0.12);
  color: var(--electric-blue);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

/* --- Requirements list --- */
.req-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
}

.req-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-dark);
  line-height: 1.55;
}

.req-bullet {
  flex-shrink: 0;
  font-size: 0.9rem;
  color: var(--electric-blue);
  font-weight: 700;
  margin-top: 1px;
}

/* --- Sidebar --- */
.cd-sidebar-inner {
  position: sticky;
  top: 88px; /* clears sticky navbar */
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Info card */
.info-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.info-card-header {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.info-card-emoji {
  font-size: 3.5rem;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.25));
}

.info-card-body {
  padding: 24px;
}

.info-card-actions {
  margin-bottom: 24px;
}

.info-rows {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.info-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.info-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.info-row-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.info-row-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 2px;
}

.info-row-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
}

/* Instructor card */
.instructor-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.instructor-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.instructor-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.instructor-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: 8px;
}

.instructor-bio {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* Certificate CTA card */
.cert-cta-card {
  background: linear-gradient(135deg, var(--deep-navy), var(--royal-blue));
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.cert-cta-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.cert-cta-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.cert-cta-desc {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.65;
  margin-bottom: 0;
}

/* --- Related courses --- */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59,130,246,0.20);
}

.related-card-img {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  overflow: hidden;
}

.related-card-body {
  padding: 14px 16px;
}

.related-card-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--deep-navy);
  line-height: 1.4;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-meta {
  display: flex;
  align-items: center;
}

/* =========================================
   COURSE DETAIL — RESPONSIVE
   ========================================= */

@media (max-width: 1024px) {
  .cd-hero-inner {
    grid-template-columns: 1fr;
  }
  .cd-hero-inner > div:last-child {
    display: none; /* hide visual card on tablet */
  }
  .cd-layout {
    grid-template-columns: 1fr;
  }
  .cd-sidebar-inner {
    position: static;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cd-hero { padding: 52px 0 44px; }
  .cd-section { padding: 24px 20px; }
  .learn-grid { grid-template-columns: 1fr; }
  .cd-meta-pills { gap: 6px; }
  .cd-hero-actions { flex-direction: column; align-items: flex-start; }
  .related-grid { grid-template-columns: 1fr; }
  .cd-enrolled { border-left: none; padding-left: 0; }
}

@media (max-width: 480px) {
  .cd-rating-row { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* =========================================
   CERTIFICATE MODAL
   ========================================= */

/* ---- Backdrop ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(11, 31, 58, 0.55);
  backdrop-filter: blur(8px) saturate(1.2);
  -webkit-backdrop-filter: blur(8px) saturate(1.2);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;

  /* Hidden by default */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

/* ---- Modal card ---- */
.modal {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid rgba(255,255,255,0.60);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(11, 31, 58, 0.28), inset 0 1px 0 rgba(255,255,255,0.80);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;

  /* Enter animation */
  transform: scale(0.94) translateY(10px);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.modal-overlay.is-open .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* ---- Header ---- */
.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 24px 28px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-title-group {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.modal-icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: 3px;
  /* Override global h2 sizing */
  font-size: 1.15rem !important;
}

.modal-course-context {
  font-size: 0.8rem;
  color: var(--electric-blue);
  font-weight: 500;
  margin-bottom: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.1rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  margin-top: -2px;
}

.modal-close:hover {
  background: var(--silver);
  color: var(--text-dark);
}

/* ---- Form ---- */
.modal-form {
  padding: 24px 28px 28px;
}

/* Two-column row reusing existing .form-group styles */
.modal-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Required asterisk */
.field-required {
  color: #ef4444;
  margin-left: 2px;
}

/* Inline validation error */
.field-error {
  display: block;
  font-size: 0.78rem;
  color: #ef4444;
  margin-top: 5px;
  min-height: 1em;
  font-weight: 500;
}

/* Error state on input */
.input-error {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.10) !important;
}

/* ---- Submit button ---- */
.modal-submit-btn {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
  padding: 14px;
  font-size: 1rem;
}

/* ---- Certificate API error panel ---- */
.cert-api-error {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 14px;
  padding: 12px 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: #dc2626;
  font-weight: 500;
  line-height: 1.5;
}
.cert-api-error-icon { flex-shrink: 0; font-size: 1rem; }

/* ---- Spinner inside button ---- */
.btn-spinner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Success panel ---- */
.modal-success {
  text-align: center;
  padding: 28px 16px 8px;
}

.success-icon {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.success-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: 8px;
}

.success-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* ---- Modal responsive ---- */
@media (max-width: 560px) {
  .modal-overlay { padding: 12px; }
  .modal-header   { padding: 18px 20px 16px; }
  .modal-form     { padding: 18px 20px 24px; }
  .modal-form-row { grid-template-columns: 1fr; gap: 0; }
}

/* =========================================
   AUTH UI — NAVBAR
   ========================================= */

/* Empty slot — zero dimensions so it doesn't shift layout before auth resolves */
/* "Sign In" button variant that matches dark navbar background */
.btn-outline-white {
  background: transparent;
  color: rgba(255, 255, 255, 0.88);
  border: 1.5px solid rgba(255, 255, 255, 0.36);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 18px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.65);
  color: var(--white);
}

/* Logged-in user chip */
.navbar-user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-pill);
  padding: 4px 6px 4px 4px;
}

.navbar-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--electric-blue), var(--royal-blue));
  color: white;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  text-decoration: none;
  transition: opacity var(--transition);
}

.navbar-user-avatar:hover { opacity: 0.85; color: white; }

.navbar-user-name {
  font-size: 0.82rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--transition);
}

.navbar-user-name:hover { color: var(--white); }

/* Re-style the Log Out button inside the chip */
.navbar-user-chip .btn-outline {
  border-color: rgba(255, 255, 255, 0.28);
  color: rgba(255, 255, 255, 0.80);
  padding: 5px 12px;
  font-size: 0.78rem;
}

.navbar-user-chip .btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.55);
  color: var(--white);
}

/* ---- Mobile nav auth section ---- */
.mobile-nav-auth-item {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 14px !important;
  margin-top: 6px;
}

.mobile-auth-user {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mobile-auth-name {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.80);
  text-decoration: none;
  transition: color var(--transition);
}

.mobile-auth-name:hover { color: var(--white); }

.mobile-login-btn {
  width: 100%;
  justify-content: center;
  margin-top: 4px;
}

/* ---- Auth-gated cert button ---- */
.auth-gated {
  background: rgba(255, 255, 255, 0.10) !important;
  color: rgba(255, 255, 255, 0.65) !important;
  box-shadow: none !important;
  cursor: pointer;
}

.auth-gated:hover {
  background: rgba(255, 255, 255, 0.18) !important;
  color: rgba(255, 255, 255, 0.90) !important;
  transform: translateY(-1px);
}

/* =========================================
   AUTH TOAST NOTIFICATIONS
   ========================================= */

.auth-toast {
  position: fixed;
  bottom: 100px;        /* sits above the floating WA button */
  right: 28px;
  z-index: 10001;
  min-width: 260px;
  max-width: 380px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  font-family: var(--font-sans);
  box-shadow: var(--shadow-lg);
  line-height: 1.4;

  /* Hidden state */
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.auth-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Flavours */
.auth-toast--info {
  background: var(--deep-navy);
  color: rgba(255, 255, 255, 0.92);
  border-left: 3px solid var(--electric-blue);
}

.auth-toast--error {
  background: #1f0a0a;
  color: rgba(255, 255, 255, 0.92);
  border-left: 3px solid #ef4444;
}

.auth-toast--success {
  background: #022c22;
  color: rgba(255, 255, 255, 0.92);
  border-left: 3px solid var(--success);
}

@media (max-width: 480px) {
  .auth-toast {
    left: 16px;
    right: 16px;
    bottom: 88px;
    min-width: unset;
    max-width: unset;
  }
}

/* =========================================
   AUTH MODAL (Sign In / Register)
   ========================================= */

/* Narrower card than the cert modal; hide scrollbar */
.modal.auth-modal {
  max-width: 440px;
  position: relative;
  scrollbar-width: none;       /* Firefox */
}
.modal.auth-modal::-webkit-scrollbar {
  display: none;               /* Chrome / Safari / Edge */
}

/* ---- Close button — absolute top-right ---- */
.auth-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 1;
}

/* ---- Brand / logo header ---- */
.auth-modal-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 28px 0;
}

.auth-modal-brand .logo-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-size: 1.3rem;
  font-weight: 800;
  color: white;
  background: linear-gradient(135deg, var(--electric-blue), var(--royal-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(59,130,246,0.35);
}

.auth-modal-brand .logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
}

.auth-modal-brand .logo-text span {
  color: var(--electric-blue);
}

/* ---- Tabs ---- */
.auth-tabs {
  display: flex;
  padding: 18px 28px 0;
  border-bottom: 1px solid var(--border);
  margin-top: 14px;
  gap: 0;
}

.auth-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 8px 0 10px;
  margin-right: 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: color var(--transition), border-color var(--transition);
  line-height: 1;
}

.auth-tab.is-active {
  color: var(--electric-blue);
  border-bottom-color: var(--electric-blue);
}

.auth-tab:hover:not(.is-active) {
  color: var(--text-dark);
}

/* ---- Panels ---- */
.auth-panel {
  padding: 20px 28px 4px;
}

.auth-modal-heading {
  font-size: 1.1rem !important;
  font-weight: 700;
  color: var(--deep-navy);
  margin-bottom: 4px;
  display: none; /* visually hidden — tabs communicate the context */
}

.auth-panel-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  text-align: center;
  line-height: 1.5;
}

/* ---- Google button ---- */
.auth-google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 11px 20px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  font-family: var(--font-sans);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.auth-google-btn:hover {
  border-color: #4285F4;
  background: #f8f9ff;
  box-shadow: 0 2px 10px rgba(66, 133, 244, 0.14);
}

.auth-google-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ---- Divider ---- */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.auth-divider span {
  font-size: 0.75rem;
  color: var(--text-light);
  white-space: nowrap;
}

/* ---- Firebase / form-level error ---- */
.auth-form-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.82rem;
  color: #dc2626;
  font-weight: 500;
  margin-bottom: 12px;
  line-height: 1.45;
}

/* ---- Password hint label ---- */
.auth-hint {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 400;
}

/* ---- Switch-panel link ---- */
.auth-switch-text {
  text-align: center;
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-top: 16px;
  margin-bottom: 0;
}

.auth-switch-btn {
  background: none;
  border: none;
  color: var(--electric-blue);
  font-weight: 600;
  cursor: pointer;
  font-size: inherit;
  font-family: inherit;
  padding: 0;
  transition: color var(--transition);
}

.auth-switch-btn:hover {
  color: var(--royal-blue);
  text-decoration: underline;
}

/* ---- Skip link ---- */
.auth-skip-text {
  text-align: center;
  padding: 12px 28px 24px;
  margin: 0;
}

.auth-skip-btn {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 0.77rem;
  cursor: pointer;
  font-family: inherit;
  padding: 0;
  transition: color var(--transition);
}

.auth-skip-btn:hover {
  color: var(--text-muted);
  text-decoration: underline;
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .auth-modal-brand,
  .auth-tabs,
  .auth-panel,
  .auth-skip-text {
    padding-left: 20px;
    padding-right: 20px;
  }

  .auth-modal-close {
    top: 10px;
    right: 10px;
  }
}

/* =========================================
   COURSE CARD SKELETON
   ========================================= */

.course-card--skeleton {
  pointer-events: none;
  animation: profile-skel-pulse 1.4s ease infinite;
}

.skel-block {
  background: var(--cool-grey) !important;
  border-radius: var(--radius-sm);
}

.course-card--skeleton .skel-line {
  background: var(--cool-grey);
  border-radius: 4px;
  display: block;
}

/* =========================================
   PROFILE PAGE
   ========================================= */

/* ── Hero ── */
.profile-hero {
  background: linear-gradient(135deg, var(--deep-navy) 0%, var(--royal-blue) 60%, #1d4ed8 100%);
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}

.profile-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(59,130,246,0.18) 0%, transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(30,58,138,0.30) 0%, transparent 50%);
  pointer-events: none;
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 32px;
  position: relative;
  z-index: 1;
  min-height: 96px;
}

/* ── Avatar ── */
.profile-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--electric-blue), var(--royal-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--white);
  border: 3px solid rgba(255,255,255,0.22);
  flex-shrink: 0;
  letter-spacing: -0.02em;
}

.profile-avatar--skel {
  background: rgba(255,255,255,0.10);
  border-color: transparent;
  animation: profile-skel-pulse 1.4s ease infinite;
}

/* ── User info ── */
.profile-info { flex: 1; }

.profile-name {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: var(--white);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.profile-email {
  color: rgba(255,255,255,0.58);
  font-size: 0.92rem;
  margin-bottom: 20px;
  line-height: 1;
}

.profile-stats { display: flex; gap: 36px; }

.profile-stat { display: flex; flex-direction: column; }

.profile-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.profile-stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.50);
  margin-top: 4px;
}

/* Hero skeleton lines */
.skel-line {
  background: rgba(255,255,255,0.12);
  border-radius: 6px;
  animation: profile-skel-pulse 1.4s ease infinite;
}

.skel-line--name  { height: 28px; width: 200px; margin-bottom: 10px; }
.skel-line--email { height: 16px; width: 140px; }

@keyframes profile-skel-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* ── Auth-required prompt ── */
.profile-auth-prompt {
  display: flex;
  align-items: center;
  gap: 24px;
}

.profile-auth-icon { font-size: 3rem; line-height: 1; }

.profile-auth-title {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--white);
  margin-bottom: 6px;
}

.profile-auth-sub {
  color: rgba(255,255,255,0.58);
  font-size: 0.92rem;
  margin: 0;
}

/* ── Certs section ── */
.profile-certs-section {
  background: var(--silver);
  padding-top: 56px;
  padding-bottom: 80px;
}

.profile-section-header { margin-bottom: 40px; }

.profile-cert-count {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 4px;
  margin-bottom: 0;
}

/* ── Certificate grid ── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ── Certificate card ── */
.cert-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px 24px 24px;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.cert-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-blue);
  border-color: var(--electric-blue);
}

.cert-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cert-card-icon { font-size: 2rem; line-height: 1; }

.cert-card-badge {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--success);
  background: rgba(16,185,129,0.10);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.cert-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--deep-navy);
  line-height: 1.45;
  flex: 1;
}

.cert-card-date {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
}

.cert-card-date-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light);
}

.cert-download-btn {
  width: 100%;
  justify-content: center;
  font-size: 0.88rem;
  padding: 11px 20px;
  margin-top: 4px;
}

/* ── Card skeleton ── */
.cert-card--skeleton {
  pointer-events: none;
  animation: profile-skel-pulse 1.4s ease infinite;
}

.cert-card--skeleton .skel {
  background: var(--cool-grey);
  border-radius: 6px;
}

.cert-card--skeleton .skel-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
}

.cert-card--skeleton .skel-title {
  height: 20px;
  width: 85%;
  margin-top: 4px;
}

.cert-card--skeleton .skel-date {
  height: 14px;
  width: 55%;
}

.cert-card--skeleton .skel-btn {
  height: 42px;
  border-radius: var(--radius-pill);
  margin-top: 4px;
}

/* ── Empty state ── */
.cert-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 80px 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1.5px dashed var(--border);
}

.cert-empty-icon  { font-size: 3.5rem; margin-bottom: 16px; line-height: 1; }
.cert-empty-title { font-size: 1.2rem; color: var(--deep-navy); margin-bottom: 8px; }
.cert-empty-desc  { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

/* ── Responsive ── */
@media (max-width: 960px) {
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .profile-header       { flex-direction: column; text-align: center; gap: 20px; }
  .profile-stats        { justify-content: center; }
  .profile-auth-prompt  { flex-direction: column; text-align: center; }
  .cert-grid            { grid-template-columns: 1fr; }
  .cert-card-top        { flex-direction: row; }
}