/* === GLOBAL RESET & BASE === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #0a0a0f;
  --secondary: #13131a;
  --accent: #6c63ff;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --accent-secondary: #00d4aa;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --border: rgba(255, 255, 255, 0.08);
  --card-bg: rgba(19, 19, 26, 0.8);
  --glass: rgba(255, 255, 255, 0.03);
  --danger: #ff4757;
  --success: #2ed573;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo span {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--accent) !important;
  color: white !important;
  padding: 0.6rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all var(--transition) !important;
}

.nav-cta:hover {
  background: #5a52e0 !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px var(--accent-glow);
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg canvas {
  width: 100%;
  height: 100%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, var(--primary) 70%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

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

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

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 1.5rem;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font);
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: #5a52e0;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* === SECTIONS COMMON === */
section {
  padding: 5rem 2rem;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* === FEATURES GRID === */
.features {
  background: var(--secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(108, 99, 255, 0.1);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.2rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* === STATS === */
.stats {
  background: var(--primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.3rem;
}

/* === UPLOAD SECTION === */
.upload-section {
  background: var(--secondary);
}

.upload-container {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.upload-zone {
  background: var(--card-bg);
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.05);
}

.upload-zone.uploading {
  pointer-events: none;
  opacity: 0.7;
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.upload-zone h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.upload-zone p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.upload-formats {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.format-tag {
  padding: 0.2rem 0.6rem;
  background: rgba(108, 99, 255, 0.15);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

.upload-progress {
  display: none;
  margin-top: 1rem;
}

.upload-progress.active {
  display: block;
}

.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s;
}

.progress-text {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* === AVATAR PREVIEW === */
.preview-container {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.preview-viewport {
  width: 100%;
  height: 350px;
  background: var(--primary);
  position: relative;
}

.preview-viewport canvas {
  width: 100% !important;
  height: 100% !important;
}

.preview-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.preview-placeholder .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.preview-info {
  padding: 1.2rem;
}

.preview-info h4 {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.preview-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.preview-meta span {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.preview-actions {
  padding: 0 1.2rem 1.2rem;
  display: flex;
  gap: 0.5rem;
}

/* === ROOMS SECTION === */
.rooms-section {
  background: var(--primary);
}

.rooms-container {
  max-width: 1000px;
  margin: 0 auto;
}

.rooms-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.rooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
}

.room-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
  cursor: pointer;
}

.room-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.room-card.permanent {
  border-color: rgba(108, 99, 255, 0.3);
}

.room-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.8rem;
}

.room-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.room-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

.room-badge.permanent {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent);
}

.room-badge.temporary {
  background: rgba(0, 212, 170, 0.15);
  color: var(--accent-secondary);
}

.room-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

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

.room-count {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.room-count .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.room-expires {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* === HOW IT WORKS === */
.how-it-works {
  background: var(--secondary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.step {
  text-align: center;
  position: relative;
}

.step::after {
  content: '';
  position: absolute;
  top: 30px;
  right: -1rem;
  width: calc(100% - 60px);
  height: 2px;
  background: var(--border);
}

.step:last-child::after {
  display: none;
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 1rem;
  position: relative;
  z-index: 1;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* === FOOTER === */
.footer {
  background: var(--secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-logo span {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* === MODAL === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

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

.modal {
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 500px;
  width: 100%;
  transform: translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal h2 {
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 0.5rem;
}

/* === TOAST NOTIFICATIONS === */
.toast-container {
  position: fixed;
  top: 5rem;
  right: 1.5rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.8rem 1.2rem;
  min-width: 280px;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  animation: slideIn 0.3s ease-out;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.toast.success {
  border-color: var(--success);
}

.toast.error {
  border-color: var(--danger);
}

.toast-icon {
  font-size: 1.2rem;
}

.toast-message {
  font-size: 0.9rem;
  flex: 1;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-mobile-toggle {
    display: block;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--secondary);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
  }

  .upload-container {
    grid-template-columns: 1fr;
  }

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

  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }

  .step::after {
    display: none;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}

@media (max-width: 480px) {
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}