/* ============================================
   EDUVAULT - Base / Reset Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: var(--lh-normal);
  min-height: 100vh;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--accent-primary);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  font-weight: var(--fw-bold);
}

/* ── Utility Classes ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.section {
  padding: var(--space-32) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-header h2 {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--fs-md);
  max-width: 600px;
  margin: 0 auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.section-label i {
  font-size: var(--fs-xs);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(0,0,0,0.02), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-on-accent);
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  color: var(--text-on-accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.45);
}

.btn-secondary {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-secondary);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--accent-primary);
  background: var(--accent-primary-muted);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--fs-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-xs);
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ── Input Fields ── */
.input-group {
  position: relative;
}

.input-group label {
  display: block;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  font-weight: var(--fw-medium);
}

.input-field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  transition: all var(--transition-base);
}

.input-field::placeholder {
  color: var(--text-tertiary);
}

.input-field:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-muted);
}

.input-field:hover {
  border-color: var(--border-secondary);
}

/* ── Cards & Panels ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

/* Premium Glassmorphism Card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-highlight);
  border-left: 1px solid var(--glass-border-highlight);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,0,0,0.05), transparent 50%, rgba(0,0,0,0.01));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.glass-card:hover {
  border-color: var(--glass-border-highlight);
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl), 0 0 20px rgba(139, 92, 246, 0.15);
}

/* Neumorphism Inner Element */
.neu-inset {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--neu-shadow-inset);
  padding: var(--space-4);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
}

.badge-accent {
  background: var(--accent-primary-muted);
  color: var(--accent-primary);
}

.badge-blue {
  background: var(--accent-blue-muted);
  color: var(--accent-blue);
}

.badge-success {
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
}

.badge-warning {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
}

/* ── Star Ratings ── */
.star-rating {
  display: inline-flex;
  gap: 2px;
  color: var(--accent-primary);
  font-size: var(--fs-sm);
}

.star-rating .empty {
  color: var(--text-tertiary);
}

/* ── Avatars ── */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  color: var(--accent-primary);
  border: 2px solid var(--border-primary);
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-lg {
  width: 64px;
  height: 64px;
  font-size: var(--fs-xl);
}

.avatar-xl {
  width: 96px;
  height: 96px;
  font-size: var(--fs-2xl);
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border-primary);
  margin: var(--space-6) 0;
}

/* ── Progress Bar ── */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-primary-hover));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ── Selection ── */
::selection {
  background: var(--accent-primary-muted);
  color: var(--accent-primary);
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px var(--accent-primary-glow); }
  50% { box-shadow: 0 0 40px var(--accent-primary-glow); }
}

.animate-fade-in {
  animation: fadeIn 0.6s var(--ease-smooth) both;
}

.animate-slide-left {
  animation: slideInLeft 0.6s var(--ease-smooth) both;
}

.animate-slide-right {
  animation: slideInRight 0.6s var(--ease-smooth) both;
}

.animate-scale-in {
  animation: scaleIn 0.5s var(--ease-smooth) both;
}

/* Staggered animation delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* ── Responsive ── */
@media (max-width: 768px) {
  html { font-size: 14px; }
  
  .section {
    padding: var(--space-16) 0;
  }
  
  .section-header h2 {
    font-size: var(--fs-2xl);
  }
  
  .container, .container-wide {
    padding: 0 var(--space-4);
  }
}