/* =========================================================
   RESPONSIVE-UPGRADE.CSS
   Drop this file AFTER professional.css in your header.
   It overrides and extends existing styles for mobile,
   tablet, and PC — no changes to professional.css needed.
   ========================================================= */

/* ── GOOGLE FONTS (Poppins for headings, Nunito for body) ── */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700;800&family=Nunito:wght@400;500;600;700&display=swap');

/* ── DESIGN TOKENS (override Inter with Poppins/Nunito) ── */
:root {
  --font-heading: 'Poppins', system-ui, sans-serif;
  --font-body:    'Nunito', system-ui, sans-serif;

  /* Brand palette stays the same — just re-declared for clarity */
  --brand-blue:   #0EA5E9;
  --brand-blue-d: #0369a1;
  --brand-gold:   #F59E0B;
  --brand-gold-d: #d97706;

  /* Glassmorphism helpers */
  --glass-bg:     rgba(255,255,255,0.85);
  --glass-blur:   blur(18px);
  --glass-border: 1px solid rgba(255,255,255,0.5);

  /* Spacing tokens */
  --section-py: 5rem;
  --section-py-sm: 3rem;
}

/* ── BASE OVERRIDES ── */
body { font-family: var(--font-body); }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); }

/* =========================================================
   1. NAVBAR — GLASS + SMOOTH SLIDE-IN MOBILE DRAWER
   ========================================================= */
.navbar-pro {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.navbar-pro.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 4px 30px rgba(0,0,0,0.08);
}

/* Logo image sizing */
.brand-logo-img {
  height: 40px;
  width: 40px;
  border-radius: 8px;
  object-fit: contain;
}

/* Nav links pill hover */
.nav-link {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  border-radius: 8px;
  padding: 0.45rem 0.9rem;
  transition: background 0.2s, color 0.2s;
}
.nav-link:hover, .nav-link.active {
  background: rgba(14,165,233,0.10);
  color: var(--brand-blue-d);
}
.nav-link.active::after { display: none; } /* remove dot indicator */

/* Auth buttons */
.auth-buttons { display: flex; gap: 0.5rem; align-items: center; }
.auth-buttons .btn { font-size: 0.85rem; padding: 0.45rem 1.1rem; }

/* ── MOBILE OVERLAY BACKDROP ── */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1998;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.mobile-overlay.active { display: block; opacity: 1; }

/* ── MOBILE DRAWER ── */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: min(300px, 85vw);
  height: 100dvh;
  background: white;
  box-shadow: -8px 0 40px rgba(0,0,0,0.12);
  padding: 0;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  z-index: 1999;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.active { transform: translateX(0); }

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--gray-100);
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-d));
  color: white;
  flex-shrink: 0;
}
.mobile-menu-header .logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: white;
}
.mobile-menu-close {
  background: rgba(255,255,255,0.2);
  border: none;
  color: white;
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  transition: background 0.2s;
}
.mobile-menu-close:hover { background: rgba(255,255,255,0.35); }

.mobile-menu-body { padding: 1rem; flex: 1; }

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-700);
  text-decoration: none;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  transition: background 0.2s, color 0.2s, padding-left 0.2s;
  margin-bottom: 2px;
  border-bottom: none;
}
.mobile-nav-link:hover {
  background: rgba(14,165,233,0.08);
  color: var(--brand-blue);
  padding-left: 1.25rem;
}
.mobile-nav-link.logout { color: #e53e3e; }
.mobile-nav-link.logout:hover { background: rgba(229,62,62,0.08); }

.mobile-menu-divider {
  height: 1px;
  background: var(--gray-100);
  margin: 0.5rem 0;
}
.mobile-menu-auth {
  padding: 1rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.mobile-menu-auth .btn { text-align: center; justify-content: center; font-size: 0.95rem; }

/* ── HAMBURGER ── */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  transition: background 0.2s;
  z-index: 2001;
}
.mobile-menu-toggle:hover { background: var(--gray-100); }
.mobile-menu-toggle span {
  display: block;
  width: 22px; height: 2.5px;
  background: var(--gray-700);
  border-radius: 3px;
  transition: all 0.3s ease;
}
.mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; transform: translateX(-10px); }
.mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* =========================================================
   2. HERO SECTION — HOME PAGE
   ========================================================= */
.hero-section {
  padding: var(--section-py) 0;
  background: linear-gradient(135deg, #0c4a6e 0%, #0369a1 40%, #0EA5E9 100%);
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content-left { text-align: left; }
.hero-content-left h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: white;
  line-height: 1.2;
  margin-bottom: 1.25rem;
}
.hero-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.88);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.65;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero-actions .btn-primary {
  background: var(--brand-gold);
  color: #1a1a2e;
  font-weight: 700;
  border: none;
}
.hero-actions .btn-primary:hover { background: var(--brand-gold-d); transform: translateY(-2px); }
.hero-actions .btn-outline {
  border-color: rgba(255,255,255,0.7);
  color: white;
}
.hero-actions .btn-outline:hover { background: rgba(255,255,255,0.15); color: white; }

.hero-stats { display: flex; gap: 2rem; }
.hero-stats .stat { text-align: left; }
.hero-stats .stat-number { font-family: var(--font-heading); font-size: 1.75rem; font-weight: 800; color: white; display: block; }
.hero-stats .stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.75); display: block; }

/* Mentor Image */
.mentor-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}
.mentor-img {
  width: 320px;
  height: 380px;
  object-fit: cover;
  border-radius: 20px;
  border: 4px solid rgba(255,255,255,0.3);
  box-shadow: 0 30px 60px rgba(0,0,0,0.3);
}
.mentor-badge {
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: white;
  color: var(--brand-blue-d);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
.mentor-badge i { color: var(--brand-gold); }

/* ── FLOATING ACHIEVEMENT CARDS ── */
.hero-achievement-cards {
  position: absolute;
  top: 2rem;
  right: -1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.achievement-card {
  background: white;
  border-radius: 12px;
  padding: 0.65rem 1rem;
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  animation: float 3s ease-in-out infinite;
}
.achievement-card:nth-child(2) { animation-delay: 1.5s; }
.achievement-card .ach-icon { font-size: 1.1rem; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

/* =========================================================
   3. FEATURES SECTION
   ========================================================= */
.features-section { padding: var(--section-py) 0; background: white; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.feature-card {
  background: #f8faff;
  border: 1px solid #e8eef8;
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-gold));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(14,165,233,0.12); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, rgba(14,165,233,0.12), rgba(245,158,11,0.08));
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.4rem;
  color: var(--brand-blue);
}
.feature-card h3 { font-family: var(--font-heading); font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--gray-900); }
.feature-card p { font-size: 0.875rem; color: var(--gray-500); line-height: 1.6; margin-bottom: 0; }

/* =========================================================
   4. COURSES SECTION (Homepage Preview + Courses Page)
   ========================================================= */
.section-header { text-align: center; margin-bottom: 2.5rem; }
.section-header h2 { font-family: var(--font-heading); font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 800; margin-bottom: 0.5rem; color: var(--gray-900); }
.section-header p { color: var(--gray-500); font-size: 1rem; margin-bottom: 0; }
.view-all {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--brand-blue);
  text-decoration: none;
  padding: 0.35rem 0.75rem;
  border: 1.5px solid var(--brand-blue);
  border-radius: 20px;
  transition: all 0.2s;
}
.view-all:hover { background: var(--brand-blue); color: white; }

.courses-preview-grid, .courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* Unified Course Card */
.course-card-pro, .course-preview-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.course-card-pro:hover, .course-preview-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(14,165,233,0.14);
  border-color: rgba(14,165,233,0.25);
}
.course-card-header, .course-preview-header {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.course-card-header img, .course-preview-header img, .course-preview-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.course-card-pro:hover .course-card-header img,
.course-preview-card:hover .course-preview-header img { transform: scale(1.05); }

.course-badge {
  position: absolute;
  top: 0.75rem; left: 0.75rem;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.course-badge.free { background: #dcfce7; color: #15803d; }
.course-badge.new, .course-badge.bestseller { background: #fef3c7; color: #92400e; }

.course-card-body, .course-preview-body { padding: 1.25rem; flex: 1; }
.course-category {
  display: inline-block;
  background: rgba(14,165,233,0.1);
  color: var(--brand-blue-d);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.6rem;
}
.course-title { font-family: var(--font-heading); font-size: 0.95rem; font-weight: 700; color: var(--gray-900); line-height: 1.4; margin-bottom: 0.5rem; }
.course-title a { color: inherit; text-decoration: none; }
.course-title a:hover { color: var(--brand-blue); }
.course-description { font-size: 0.85rem; color: var(--gray-500); line-height: 1.55; margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.course-meta { display: flex; gap: 1rem; font-size: 0.8rem; color: var(--gray-500); margin-top: 0.75rem; }
.course-meta span { display: flex; align-items: center; gap: 0.3rem; }
.course-meta i { color: var(--brand-blue); }

.course-card-footer, .course-preview-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fafbfc;
}
.price-free { color: #15803d; font-weight: 800; font-family: var(--font-heading); font-size: 1rem; }
.price-current, .current-price { color: var(--gray-900); font-weight: 800; font-family: var(--font-heading); font-size: 1rem; }
.price-original, .original-price { color: var(--gray-400); font-size: 0.8rem; text-decoration: line-through; margin-left: 0.25rem; }

/* =========================================================
   5. DASHBOARD
   ========================================================= */
.dashboard-pro { padding-top: 2rem; padding-bottom: 3rem; }

/* Welcome Banner */
.welcome-section {
  background: linear-gradient(135deg, var(--brand-blue-d), var(--brand-blue));
  border-radius: 20px;
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  color: white;
  overflow: hidden;
  position: relative;
}
.welcome-section::after {
  content: '🎓';
  position: absolute;
  right: 2rem;
  font-size: 4rem;
  opacity: 0.15;
}
.welcome-content h1 {
  color: white;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.welcome-content p { color: rgba(255,255,255,0.8); margin-bottom: 0; font-size: 0.9rem; }
.user-name { color: var(--brand-gold); }

.last-active {
  background: rgba(255,255,255,0.2);
  border-radius: 20px;
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  color: white;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
}
.last-active i { color: #4ade80; font-size: 0.55rem; }

/* Stats Grid */
.stats-section { margin-bottom: 2rem; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.stat-card {
  background: white;
  border-radius: 16px;
  padding: 1.4rem;
  border: 1px solid var(--gray-100);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform 0.25s, box-shadow 0.25s;
}
.stat-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.1); }
.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.stat-card:nth-child(1) .stat-icon { background: #e0e7ff; color: #4338ca; }
.stat-card:nth-child(2) .stat-icon { background: #dcfce7; color: #15803d; }
.stat-card:nth-child(3) .stat-icon { background: #fae8ff; color: #a21caf; }
.stat-card:nth-child(4) .stat-icon { background: #ffedd5; color: #c2410c; }
.stat-info h3 { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 800; color: var(--gray-900); margin-bottom: 0.1rem; }
.stat-info p { font-size: 0.8rem; color: var(--gray-500); margin-bottom: 0; }

/* Quick Actions */
.actions-section { margin-bottom: 2rem; }
.actions-section h2 { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 700; margin-bottom: 1rem; color: var(--gray-900); }
.actions-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}
.action-card {
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  padding: 1.25rem 1rem;
  text-align: center;
  text-decoration: none;
  color: var(--gray-700);
  transition: all 0.25s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.action-card:hover {
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-d));
  color: white;
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(14,165,233,0.25);
  border-color: transparent;
}
.action-icon {
  width: 48px; height: 48px;
  background: rgba(14,165,233,0.1);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  color: var(--brand-blue);
  transition: all 0.25s;
}
.action-card:hover .action-icon { background: rgba(255,255,255,0.2); color: white; }
.action-card span { font-size: 0.8rem; font-weight: 600; line-height: 1.3; }

/* Enrolled Courses */
.courses-section { margin-bottom: 2rem; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.section-header h2 { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0; }

.course-card-wrapper {
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  transition: box-shadow 0.25s;
}
.course-card-wrapper:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.progress-container.top-bar { padding: 0; }
.progress-bar { height: 4px; background: var(--gray-100); }
.progress-bar .progress { height: 100%; background: linear-gradient(90deg, var(--brand-blue), var(--brand-gold)); border-radius: 4px; transition: width 0.6s ease; }

.course-item-pro {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
}
.course-item-pro .course-image { width: 64px; height: 64px; border-radius: 10px; overflow: hidden; flex-shrink: 0; }
.course-item-pro .course-image img { width: 100%; height: 100%; object-fit: cover; }
.course-item-pro .course-info { flex: 1; }
.course-item-pro .course-info h4 { font-family: var(--font-heading); font-size: 0.95rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0; }
.course-item-pro .course-actions { display: flex; align-items: center; gap: 1rem; flex-shrink: 0; }
.progress-text { font-size: 0.78rem; font-weight: 600; color: var(--brand-blue); white-space: nowrap; }

/* Recent Activity */
.activity-section { margin-bottom: 2rem; }
.activity-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: white;
  border: 1px solid var(--gray-100);
  border-radius: 12px;
  margin-bottom: 0.6rem;
  transition: border-color 0.2s;
}
.activity-item:hover { border-color: rgba(14,165,233,0.3); }
.activity-icon {
  width: 40px; height: 40px;
  background: rgba(14,165,233,0.1);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-blue);
  font-size: 1rem;
  flex-shrink: 0;
}
.activity-content { flex: 1; }
.activity-content p { font-size: 0.875rem; color: var(--gray-700); margin-bottom: 0.15rem; }
.activity-time { font-size: 0.75rem; color: var(--gray-400); }
.activity-score {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 800;
  padding: 0.3rem 0.7rem;
  border-radius: 20px;
  flex-shrink: 0;
}
.score-excellent { background: #dcfce7; color: #15803d; }
.score-good { background: #e0f2fe; color: #0369a1; }
.score-average { background: #fef3c7; color: #92400e; }
.score-poor { background: #fee2e2; color: #b91c1c; }

/* Loading state */
.loading-state { text-align: center; padding: 3rem; color: var(--gray-400); grid-column: 1/-1; }
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--brand-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 0.75rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* =========================================================
   6. COURSES PAGE
   ========================================================= */
.courses-page main { padding-top: 0; }
.courses-hero {
  background: linear-gradient(135deg, #0c4a6e, var(--brand-blue));
  padding: 4rem 0 3rem;
  text-align: center;
  color: white;
}
.courses-hero .hero-title { font-family: var(--font-heading); font-size: clamp(1.5rem,3.5vw,2.5rem); font-weight: 800; color: white; margin-bottom: 1rem; }
.courses-hero .hero-subtitle { color: rgba(255,255,255,0.85); font-size: 1rem; margin-bottom: 2rem; }
.courses-hero .hero-stats { display: flex; justify-content: center; gap: 3rem; flex-wrap: wrap; }
.courses-hero .stat-number { color: white; font-family: var(--font-heading); font-size: 1.75rem; font-weight: 800; display: block; }
.courses-hero .stat-label { color: rgba(255,255,255,0.75); font-size: 0.8rem; }

/* Filter Section */
.course-filters-section { padding: 2rem 0; background: white; border-bottom: 1px solid var(--gray-100); position: sticky; top: 72px; z-index: 100; }
.filters-header { text-align: center; margin-bottom: 1.25rem; }
.filters-header h2 { font-family: var(--font-heading); font-size: 1.1rem; font-weight: 700; margin-bottom: 0.15rem; }
.filters-header p { font-size: 0.85rem; color: var(--gray-500); margin-bottom: 0; }
.filters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr) 2fr;
  gap: 1rem;
  align-items: end;
}
.filter-group { display: flex; flex-direction: column; gap: 0.4rem; }
.filter-group label { font-size: 0.78rem; font-weight: 700; color: var(--gray-600); text-transform: uppercase; letter-spacing: 0.05em; }
.filter-select {
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  padding: 0.6rem 1rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--gray-700);
  background: white;
  cursor: pointer;
  transition: border-color 0.2s;
  outline: none;
}
.filter-select:focus { border-color: var(--brand-blue); }
.search-group { position: relative; }
.search-group label { font-size: 0.78rem; font-weight: 700; color: var(--gray-600); text-transform: uppercase; letter-spacing: 0.05em; display: block; margin-bottom: 0.4rem; }
.search-input {
  width: 100%;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  padding: 0.6rem 1rem 0.6rem 2.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--gray-700);
  background: white;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.search-input:focus { border-color: var(--brand-blue); box-shadow: 0 0 0 3px rgba(14,165,233,0.1); }
.search-group .fa-search {
  position: absolute;
  left: 1rem;
  bottom: 0.75rem;
  color: var(--gray-400);
  pointer-events: none;
}

.courses-grid-section { padding: 3rem 0; background: var(--gray-50); }

/* =========================================================
   7. ARTICLES PAGE
   ========================================================= */
.articles-page { background: var(--gray-50); }

.articles-hero {
  background: linear-gradient(135deg, #1e3a5f 0%, #1a5276 50%, #2471a3 100%);
  padding: 5rem 0 4rem;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}
.articles-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(36,113,163,0.4), transparent 60%);
}
.articles-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  color: white;
  position: relative;
  z-index: 1;
  margin-bottom: 1rem;
}
.articles-hero p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  max-width: 550px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.articles-search-section {
  padding: 1.5rem 0;
  background: white;
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 72px;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.articles-search-wrapper {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}
.articles-search-input {
  width: 100%;
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  padding: 0.85rem 1.5rem 0.85rem 3rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--gray-700);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.articles-search-input:focus { border-color: var(--brand-blue); box-shadow: 0 0 0 4px rgba(14,165,233,0.1); }
.articles-search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 1rem;
}

.articles-grid-section { padding: 3rem 0; }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.article-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.article-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.article-card-img {
  height: 190px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  position: relative;
}
.article-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.article-card:hover .article-card-img img { transform: scale(1.06); }
.article-card-img-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  color: var(--brand-blue);
  opacity: 0.5;
}

.article-card-body { padding: 1.4rem; flex: 1; display: flex; flex-direction: column; }
.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: 0.75rem;
}
.article-meta span { display: flex; align-items: center; gap: 0.3rem; }
.article-tag {
  display: inline-block;
  background: rgba(14,165,233,0.08);
  color: var(--brand-blue-d);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}
.article-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.45;
  text-decoration: none;
  display: block;
  margin-bottom: 0.6rem;
  transition: color 0.2s;
}
.article-title:hover { color: var(--brand-blue); }
.article-excerpt {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin-bottom: 1rem;
}
.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brand-blue);
  text-decoration: none;
  margin-top: auto;
  transition: gap 0.2s;
}
.article-read-more:hover { gap: 0.6rem; }

.articles-empty {
  grid-column: 1/-1;
  text-align: center;
  padding: 4rem;
  color: var(--gray-400);
}
.articles-empty i { font-size: 3rem; margin-bottom: 1rem; opacity: 0.5; display: block; }
.articles-empty h3 { font-family: var(--font-heading); color: var(--gray-600); font-size: 1.25rem; }

/* =========================================================
   8. CTA SECTION (Homepage)
   ========================================================= */
.cta-section {
  padding: var(--section-py) 0;
  background: linear-gradient(135deg, #0c4a6e, var(--brand-blue-d));
  color: white;
  text-align: center;
}
.cta-content h2 { font-family: var(--font-heading); font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 800; color: white; margin-bottom: 1rem; }
.cta-content p { color: rgba(255,255,255,0.82); max-width: 550px; margin: 0 auto 2rem; }
.cta-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 2rem; }
.cta-actions .btn-primary { background: var(--brand-gold); color: #1a1a2e; font-weight: 700; border: none; }
.cta-actions .btn-primary:hover { background: var(--brand-gold-d); }
.cta-actions .btn-outline { border-color: rgba(255,255,255,0.6); color: white; }
.cta-actions .btn-outline:hover { background: rgba(255,255,255,0.15); }
.cta-features { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; }
.cta-features .feature { display: flex; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: rgba(255,255,255,0.8); }
.cta-features .feature i { color: var(--brand-gold); }

/* =========================================================
   9. FOOTER
   ========================================================= */
.footer-pro { background: var(--gray-900); color: var(--gray-300); padding: 3.5rem 0 0; }
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { display: flex; align-items: center; gap: 0.75rem; color: white; text-decoration: none; font-family: var(--font-heading); font-weight: 700; font-size: 1.1rem; margin-bottom: 0.75rem; }
.footer-logo i { color: var(--brand-gold); font-size: 1.4rem; }
.footer-description { font-size: 0.875rem; color: var(--gray-400); line-height: 1.65; margin-bottom: 1.25rem; }
.footer-section h4 { font-family: var(--font-heading); color: white; font-size: 0.9rem; font-weight: 700; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: var(--gray-400); text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--brand-gold); }
.social-links { display: flex; gap: 0.6rem; }
.social-icon-pro {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.85rem;
  transition: background 0.2s, color 0.2s;
}
.social-icon-pro:hover { background: var(--brand-gold); color: white; }
.contact-item { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.85rem; color: var(--gray-400); margin-bottom: 0.6rem; }
.contact-item i { color: var(--brand-gold); margin-top: 0.15rem; flex-shrink: 0; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 0; font-size: 0.8rem; color: var(--gray-500); }
.footer-legal { display: flex; gap: 1.25rem; }
.footer-legal a { color: var(--gray-500); text-decoration: none; }
.footer-legal a:hover { color: var(--gray-300); }

/* =========================================================
   10. BUTTONS (enhanced)
   ========================================================= */
.btn { font-family: var(--font-body); font-weight: 700; border-radius: 10px; }
.btn-primary { background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-d)); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(14,165,233,0.35); }
.btn-lg { padding: 0.85rem 2rem; font-size: 0.95rem; }

/* =========================================================
   11. TOAST NOTIFICATIONS
   ========================================================= */
.toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 9999; display: flex; flex-direction: column; gap: 0.5rem; }
.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.25rem;
  border-radius: 12px;
  background: white;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
  font-size: 0.875rem;
  font-weight: 600;
  max-width: 340px;
  transform: translateX(120%);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), opacity 0.35s;
  border-left: 4px solid;
}
.toast.show { transform: translateX(0); opacity: 1; }
.toast-success { border-color: #22c55e; color: #15803d; }
.toast-error { border-color: #ef4444; color: #b91c1c; }
.toast-warning { border-color: var(--brand-gold); color: #92400e; }
.toast-info { border-color: var(--brand-blue); color: var(--brand-blue-d); }
.toast-message { flex: 1; }
.toast-close { background: none; border: none; cursor: pointer; color: var(--gray-400); font-size: 1rem; padding: 0; line-height: 1; }

/* =========================================================
   12. EMPTY STATES
   ========================================================= */
.empty-state {
  text-align: center;
  padding: 3.5rem 1.5rem;
  color: var(--gray-400);
}
.empty-state i { font-size: 2.5rem; margin-bottom: 1rem; opacity: 0.5; display: block; }
.empty-state h3, .empty-state h4 { font-family: var(--font-heading); font-size: 1.1rem; color: var(--gray-600); margin-bottom: 0.4rem; }
.empty-state p { font-size: 0.875rem; color: var(--gray-400); margin-bottom: 1rem; }

/* hidden class */
.hidden { display: none !important; }

/* =========================================================
   13. RESPONSIVE BREAKPOINTS
   ========================================================= */

/* ── Large Tablet (max 1024px) ── */
@media (max-width: 1024px) {
  .nav-menu { gap: 0.5rem; }
  .nav-link { font-size: 0.82rem; padding: 0.4rem 0.65rem; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-preview-grid, .courses-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-content { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .actions-grid { grid-template-columns: repeat(3, 1fr); }
  .filters-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-grid-layout { grid-template-columns: 1.2fr 0.8fr; gap: 2rem; }
  .mentor-img { width: 260px; height: 320px; }
}

/* ── Tablet (max 768px) ── */
@media (max-width: 768px) {
  :root { --section-py: 3rem; --section-py-sm: 2rem; }

  /* Navbar: hide desktop menu, show hamburger */
  .nav-menu { display: none !important; }
  .mobile-menu-toggle { display: flex !important; }
  .auth-buttons { display: none; }

  .hero-grid-layout { grid-template-columns: 1fr; text-align: center; }
  .hero-image-right { display: none; }
  .hero-content-left { text-align: center; }
  .hero-stats { justify-content: center; flex-wrap: wrap; gap: 1.5rem; }
  .hero-actions { justify-content: center; }
  .hero-subtitle { margin: 0 auto 2rem; }

  .features-grid { grid-template-columns: 1fr; }
  .courses-preview-grid, .courses-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .actions-grid { grid-template-columns: repeat(2, 1fr); }
  .filters-grid { grid-template-columns: 1fr 1fr; }

  .welcome-section { flex-direction: column; gap: 0.75rem; text-align: center; }
  .welcome-section::after { display: none; }

  .footer-content { grid-template-columns: 1fr; gap: 1.75rem; text-align: center; }
  .footer-brand-info { align-items: center; }
  .social-links { justify-content: center; }
  .contact-item { justify-content: center; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

  .course-filters-section { position: static; }
  .articles-search-section { position: static; }

  .course-item-pro { flex-wrap: wrap; }
  .course-item-pro .course-actions { width: 100%; justify-content: space-between; }
}

/* ── Mobile (max 576px) ── */
@media (max-width: 576px) {
  .container { padding: 0 1rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .actions-grid { grid-template-columns: repeat(2, 1fr); }
  .filters-grid { grid-template-columns: 1fr; }
  .cta-features { flex-direction: column; align-items: center; gap: 0.75rem; }
  .hero-stats { flex-direction: column; align-items: center; gap: 1rem; }
  .mentor-img { width: 200px; height: 240px; }
  .course-card-header, .course-preview-header { height: 160px; }
  .brand-logo-img { height: 32px; width: 32px; }
  .welcome-section { padding: 1.25rem; }
  .stat-card { padding: 1.1rem; }
  .stat-info h3 { font-size: 1.25rem; }
  .action-icon { width: 40px; height: 40px; font-size: 1rem; }
  .toast-container { left: 1rem; right: 1rem; }
  .toast { max-width: 100%; }
}

.course-card-pro {
  background: white;
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}
.course-card-pro::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-blue-d));
}
.course-card-pro:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.ccp-top {
  display: flex;
  gap: 1rem;
  align-items: center;
}
.ccp-thumb {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  background: linear-gradient(135deg, #0EA5E9, #0369a1);
}
.ccp-thumb-placeholder {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0EA5E9, #0369a1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: rgba(255,255,255,0.7);
  flex-shrink: 0;
}
.ccp-info { flex: 1; min-width: 0; }
.ccp-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-900);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.25rem;
}
.ccp-category {
  font-size: 0.74rem;
  color: var(--brand-blue);
  font-weight: 600;
}

.ccp-ring-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--gray-50);
  border-radius: 12px;
  padding: 0.75rem 1rem;
}
.progress-ring-wrap {
  position: relative;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}
.progress-ring-svg {
  transform: rotate(-90deg);
}
.pr-bg {
  fill: none;
  stroke: var(--gray-200);
  stroke-width: 5;
}
.pr-fill {
  fill: none;
  stroke: var(--brand-blue);
  stroke-width: 5;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease;
}
.pr-fill.done { stroke: #10b981; }
.pr-fill.mid { stroke: #f59e0b; }
.pr-pct {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--gray-700);
  font-family: var(--font-heading);
}
.ccp-ring-text h4 {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 0.2rem;
}
.ccp-ring-text p {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin: 0;
  line-height: 1.4;
}

.ccp-actions {
  display: flex;
  gap: 0.5rem;
}
.ccp-btn-continue {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem;
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-d));
  color: white;
  border: none;
  border-radius: 8px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}
.ccp-btn-continue:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(14,165,233,0.3);
  color: white;
}
.ccp-btn-tests {
  padding: 0.6rem 0.85rem;
  background: white;
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}
.ccp-btn-tests:hover {
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}


/* ==========================================================
   MOBILE FIXES — appended by mobile audit pass
   ========================================================== */

/* ── My Results: prevent score ring text overflow on 360px ── */
@media (max-width: 400px) {
  .rci-score-ring { width: 44px; height: 44px; }
  .rci-ring-svg { width: 44px; height: 44px; }
  .rci-ring-pct { font-size: 0.65rem; }
  .rci-title { font-size: 0.82rem; }
  .rci-meta-chip { font-size: 0.7rem; }
  .result-card-item { gap: 0.65rem; padding: 0.85rem 0.9rem; }
}

/* ── Footer: fix ragged contact items on mobile ── */
@media (max-width: 768px) {
  .contact-item {
    justify-content: center !important;
    text-align: center;
  }
  .contact-item span { text-align: left; }
}

/* ── Knowledge Base: show a horizontal topic pill bar on mobile
      (replaces the hidden sidebar topic filter) ── */
@media (max-width: 900px) {
  .kb-mobile-topics {
    display: flex;
    overflow-x: auto;
    gap: 0.5rem;
    padding: 0.75rem 0 0.5rem;
    scrollbar-width: none;
    margin-bottom: 1rem;
  }
  .kb-mobile-topics::-webkit-scrollbar { display: none; }
  .kb-mobile-topic-pill {
    display: inline-flex; align-items: center; gap: 0.35rem;
    background: white; border: 1.5px solid var(--gray-200); border-radius: 50px;
    padding: 0.35rem 0.9rem; font-size: 0.78rem; font-weight: 600;
    color: var(--gray-600); white-space: nowrap; cursor: pointer;
    transition: all 0.2s; flex-shrink: 0;
  }
  .kb-mobile-topic-pill.active,
  .kb-mobile-topic-pill:hover {
    background: rgba(14,165,233,0.1); border-color: var(--brand-blue);
    color: var(--brand-blue);
  }
}
@media (min-width: 901px) {
  .kb-mobile-topics { display: none; }
}

/* ── Course card progress text: prevent overflow on 360px ── */
@media (max-width: 380px) {
  .ccp-ring-text h4 { font-size: 0.77rem; }
  .ccp-ring-text p  { font-size: 0.7rem; }
  .ccp-title { font-size: 0.82rem; }
  .ccp-category { font-size: 0.7rem; }
}

/* ── Auth pages: tighten card padding on very small screens ── */
@media (max-width: 380px) {
  .auth-card { padding: 1.5rem 1.1rem !important; }
  .auth-card h2 { font-size: 1.3rem; }
}