/* ================================================
   STUDIO VAULT — Design System & Styles
   ================================================ */

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

:root {
  --bg-primary: #09090b;
  --bg-secondary: #111113;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;
  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-glow: rgba(139, 92, 246, 0.15);
  --accent-gradient: linear-gradient(135deg, #a78bfa 0%, #6366f1 50%, #818cf8 100%);
  --danger: #ef4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

.hidden {
  display: none !important;
}


/* ================================================
   LOGIN SCREEN
   ================================================ */
.login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  z-index: 1000;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.login-screen.fade-out {
  opacity: 0;
  transform: scale(1.02);
  pointer-events: none;
}

/* Background orbs */
.login-bg-orbs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--accent);
  top: -100px;
  right: -100px;
  animation: orbFloat 12s ease-in-out infinite;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: #6366f1;
  bottom: -80px;
  left: -80px;
  animation: orbFloat 15s ease-in-out infinite reverse;
}

.orb-3 {
  width: 200px;
  height: 200px;
  background: #818cf8;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orbPulse 8s ease-in-out infinite;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -30px); }
  66% { transform: translate(-20px, 20px); }
}

@keyframes orbPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.5; }
}

/* Login Card */
.login-card {
  position: relative;
  width: 100%;
  max-width: 400px;
  padding: 48px 40px;
  background: var(--bg-glass);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  text-align: center;
  animation: cardEntry 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes cardEntry {
  to { opacity: 1; transform: translateY(0); }
}

.login-icon {
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.login-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 32px;
}

/* Input Styles */
.input-group {
  text-align: left;
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.input-group input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  outline: none;
  transition: var(--transition);
}

.input-group input::placeholder {
  color: var(--text-muted);
}

.input-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(255, 255, 255, 0.06);
}

/* Error */
.login-error {
  color: var(--danger);
  font-size: 0.8125rem;
  min-height: 20px;
  margin-bottom: 8px;
  transition: var(--transition);
}

/* Login Button */
.login-btn {
  width: 100%;
  padding: 14px 24px;
  background: var(--accent-gradient);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.login-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
}

.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(139, 92, 246, 0.3);
}

.login-btn:hover::before {
  opacity: 1;
}

.login-btn:active {
  transform: translateY(0);
}

.login-card.shake {
  animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shake {
  10%, 90% { transform: translateX(-2px); }
  20%, 80% { transform: translateX(3px); }
  30%, 50%, 70% { transform: translateX(-5px); }
  40%, 60% { transform: translateX(5px); }
}


/* ================================================
   MAIN CONTENT
   ================================================ */
.main-content {
  position: relative;
  min-height: 100vh;
  padding-bottom: 80px;
}

/* Background grid */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.bg-orbs-main {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.orb-m1 {
  width: 500px;
  height: 500px;
  background: rgba(139, 92, 246, 0.08);
  top: -200px;
  right: -200px;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-m2 {
  width: 400px;
  height: 400px;
  background: rgba(99, 102, 241, 0.06);
  bottom: -150px;
  left: -150px;
  animation: orbFloat 18s ease-in-out infinite reverse;
}


/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: rgba(9, 9, 11, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.logout-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-primary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: var(--transition);
}

.logout-btn:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(239, 68, 68, 0.08);
}


/* ---------- Hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 40px 60px;
  max-width: 720px;
  margin: 0 auto;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.hero-line {
  display: block;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  padding: 16px 32px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 60px;
  backdrop-filter: blur(20px);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-light);
}

.stat-label {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
}


/* ---------- Video Grid ---------- */
.video-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: 32px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 40px;
}

.video-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-slow);
  animation: fadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
  transform: translateY(30px);
}

.video-card:nth-child(1) { animation-delay: 0.1s; }
.video-card:nth-child(2) { animation-delay: 0.25s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.video-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--border-hover);
}

.card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 10;
  padding: 4px 12px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-light);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 20px;
  backdrop-filter: blur(10px);
}

/* Video Wrapper */
.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-secondary);
}

.video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(9, 9, 11, 0.4);
  backdrop-filter: blur(2px);
  transition: var(--transition);
  cursor: pointer;
}

.video-overlay.playing {
  opacity: 0;
  pointer-events: none;
}

.play-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.play-btn svg {
  margin-left: 4px;
}

.play-btn:hover {
  background: rgba(139, 92, 246, 0.3);
  border-color: var(--accent);
  transform: scale(1.1);
  box-shadow: 0 0 40px var(--accent-glow);
}

/* Card Info */
.card-info {
  padding: 24px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-bottom: 20px;
}

.dot {
  color: var(--text-muted);
}

/* Download Button */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
}

.download-btn:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent-light);
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.15);
  transform: translateY(-1px);
}

.download-btn:active {
  transform: translateY(0);
}


/* ---------- Footer ---------- */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 40px 40px;
  color: var(--text-muted);
  font-size: 0.8125rem;
}


/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 768px) {
  .navbar {
    padding: 12px 20px;
  }

  .hero {
    padding: 60px 20px 40px;
  }

  .hero-stats {
    gap: 20px;
    padding: 14px 24px;
  }

  .video-grid {
    grid-template-columns: 1fr;
    padding: 0 20px;
    gap: 24px;
  }

  .login-card {
    margin: 0 20px;
    padding: 36px 28px;
  }

  .footer {
    padding: 40px 20px 30px;
  }
}

@media (max-width: 520px) {
  .video-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2rem;
  }

  .logout-btn span {
    display: none;
  }
}