/* ============================================
   HARIT TEXTILE — Mobile Web App (PWA)
   App-like UI for phones & tablets
   ============================================ */

:root {
  --bottom-nav-height: 64px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-top: env(safe-area-inset-top, 0px);
}

/* PWA standalone mode */
@media (display-mode: standalone) {
  .install-banner { display: none !important; }
  .header { padding-top: var(--safe-top); }
}

/* Install Banner */
.install-banner {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 12px);
  left: 12px;
  right: 12px;
  z-index: 950;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-surface));
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: none;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.4s ease;
}

.install-banner.show { display: flex; }

.install-banner-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  flex-shrink: 0;
  object-fit: cover;
}

.install-banner-text {
  flex: 1;
  min-width: 0;
}

.install-banner-text strong {
  display: block;
  font-size: 0.9rem;
  color: var(--color-cream);
}

.install-banner-text span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.install-banner-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.install-banner .btn-install {
  padding: 8px 14px;
  font-size: 0.8rem;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.install-banner .btn-dismiss {
  padding: 8px 10px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Bottom Navigation */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: calc(var(--bottom-nav-height) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  background: rgba(15, 14, 12, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.3);
}

.bottom-nav-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  height: var(--bottom-nav-height);
  max-width: 500px;
  margin: 0 auto;
}

.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: var(--color-text-muted);
  font-size: 0.65rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0 4px;
}

.bottom-nav-item svg {
  width: 22px;
  height: 22px;
  transition: transform var(--transition);
}

.bottom-nav-item.active {
  color: var(--color-gold);
}

.bottom-nav-item.active svg {
  transform: scale(1.1);
}

.bottom-nav-item.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--color-gold);
  border-radius: 0 0 3px 3px;
}

.bottom-nav-item.center {
  position: relative;
}

.bottom-nav-item.center .nav-fab {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: -18px;
  box-shadow: 0 4px 16px rgba(212, 168, 83, 0.4);
  border: 3px solid var(--color-bg);
}

.bottom-nav-item.center .nav-fab svg {
  width: 24px;
  height: 24px;
}

.bottom-nav-item.center span:not(.nav-fab) {
  margin-top: -4px;
}

/* Mobile App Layout */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  body {
    padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom));
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
  }

  .bottom-nav { display: block; }

  /* Hide desktop FAB on mobile — bottom nav replaces it */
  .fab-group { display: none; }

  /* Compact header */
  .header { height: var(--header-height); }
  .logo-text { font-size: 1.15rem; }
  .logo-icon { width: 30px; height: 30px; }
  .nav-toggle { display: none !important; }
  .nav-links { display: none !important; }

  .nav-actions .btn-ghost,
  .nav-actions .btn-primary {
    display: none !important;
  }

  /* Hero mobile app style */
  .hero {
    min-height: auto;
    padding: calc(var(--header-height) + 20px) 16px 32px;
    gap: 24px;
  }

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

  .hero-badge {
    font-size: 0.7rem;
    padding: 5px 12px;
  }

  .hero-cta .btn-lg {
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    padding: 16px 0;
  }

  .stat-divider { display: none; }
  .stat { min-width: 80px; text-align: center; }

  .loom-card {
    max-width: 100%;
    padding: 20px;
  }

  /* Horizontal scroll product cards — app style */
  .products-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 16px;
    padding: 0 16px 8px;
    margin: 0 -16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .products-grid::-webkit-scrollbar { display: none; }

  .product-card {
    flex: 0 0 85%;
    max-width: 320px;
    scroll-snap-align: center;
  }

  .section .container {
    padding: 0 16px;
  }

  .section {
    padding: 48px 0;
  }

  .section-header {
    margin-bottom: 32px;
    text-align: left;
  }

  .section-title {
    font-size: 1.75rem;
  }

  /* Fabric horizontal scroll */
  .fabrics-showcase {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 12px;
    padding: 0 16px 8px;
    margin: 0 -16px 32px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .fabrics-showcase::-webkit-scrollbar { display: none; }

  .fabric-swatch {
    flex: 0 0 140px;
    scroll-snap-align: start;
  }

  /* Full-screen modals on mobile */
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }

  .modal {
    max-width: 100%;
    max-height: 92vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 24px 20px calc(24px + var(--safe-bottom));
    transform: translateY(100%);
  }

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

  .modal::before {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    background: var(--color-border-strong);
    border-radius: 2px;
    margin: -8px auto 16px;
  }

  /* Touch-friendly buttons */
  .btn {
    min-height: 44px;
  }

  .product-footer .btn-sm {
    min-height: 40px;
    padding: 10px 18px;
  }

  /* Features as horizontal cards */
  .features-grid {
    display: flex;
    overflow-x: auto;
    gap: 12px;
    padding: 0 16px;
    margin: 0 -16px;
    scrollbar-width: none;
  }

  .features-grid::-webkit-scrollbar { display: none; }

  .feature-item {
    flex: 0 0 240px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px;
  }

  /* Contact cards stack */
  .contact-card {
    padding: 16px;
  }

  .contact-map {
    min-height: 280px;
  }

  /* Footer compact */
  .footer {
    padding: 40px 0 0;
    margin-bottom: 0;
  }

  .footer-grid {
    gap: 24px;
  }

  /* Pull to refresh indicator */
  .ptr-indicator {
    position: fixed;
    top: calc(var(--header-height) + var(--safe-top));
    left: 50%;
    transform: translateX(-50%) translateY(-60px);
    z-index: 999;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    padding: 8px 16px;
    font-size: 0.8rem;
    color: var(--color-gold);
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    pointer-events: none;
  }

  .ptr-indicator.visible {
    transform: translateX(-50%) translateY(8px);
    opacity: 1;
  }

  .ptr-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }

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

  /* Quick action chips on hero */
  .mobile-quick-actions {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    margin-bottom: 20px;
    scrollbar-width: none;
  }

  .mobile-quick-actions::-webkit-scrollbar { display: none; }

  .quick-chip {
    flex-shrink: 0;
    padding: 8px 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--color-cream-muted);
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition);
  }

  .quick-chip:active,
  .quick-chip:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
    background: rgba(212, 168, 83, 0.08);
  }

  /* Offline banner */
  .offline-banner {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 1100;
    background: #7f1d1d;
    color: #fecaca;
    text-align: center;
    padding: 8px 16px;
    font-size: 0.8rem;
    transform: translateY(-100%);
    transition: transform 0.3s;
  }

  .offline-banner.show {
    transform: translateY(0);
  }
}

@media (min-width: 769px) {
  .mobile-quick-actions { display: none; }
  .install-banner { bottom: 24px; }
  .ptr-indicator { display: none; }
  .offline-banner { display: none; }
}

@media (max-width: 480px) {
  .hero-cta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .hero-cta .btn-ghost {
    grid-column: 1 / -1;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .install-banner {
    flex-wrap: wrap;
  }

  .install-banner-actions {
    width: 100%;
    justify-content: flex-end;
  }
}

/* Touch active states */
@media (hover: none) {
  .btn:active { transform: scale(0.97); }
  .product-card:active { transform: scale(0.98); }
  .fabric-swatch:active { transform: scale(0.97); }
  .bottom-nav-item:active { opacity: 0.7; }
}