/* =============================================
   Yala Bobo — Responsive Layout System
   Mobile-first ➜ Desktop sidebar at ≥768px
   ============================================= */

/* ─── CSS Variables (responsive additions) ─── */
:root {
  --sidebar-width: 260px;
  --sidebar-collapsed: 72px;
  --topbar-height: 60px;
  --content-max: 900px;
  --desktop-gap: 24px;
}

/* ─────────────────────────────────────────────
   MOBILE BASE  (all screens, overridden above)
   ────────────────────────────────────────────*/

/* Mobile: app wrapper fills screen */
.app-wrapper {
  max-width: 100%;
  width: 100%;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* Mobile: page content has bottom padding for nav */
.page-content {
  padding-bottom: calc(var(--nav-height, 72px) + var(--nav-safe-bottom, 0px) + 16px);
  min-height: 100vh;
  border: none;
  border-radius: 0;
  margin: 0;
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
}

/* Rooms grid — 2 col on mobile */
.rooms-grid {
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 12px;
}

/* Desktop sidebar — hidden on mobile */
.desktop-sidebar { display: none; }

/* Desktop topbar — hidden on mobile */
.desktop-topbar { display: none; }

/* Mobile bottom nav — visible */
.bottom-nav { display: flex; }

/* Touch targets — min 44px */
.btn, .nav-item, .btn-icon, .back-btn,
.reel-action-btn, .nav-plus-btn {
  min-height: 44px;
  min-width: 44px;
}

/* ─────────────────────────────────────────────
   TABLET  ≥ 600px
   ────────────────────────────────────────────*/
@media (min-width: 600px) {
  .rooms-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    padding: 16px;
  }
}

/* ─────────────────────────────────────────────
   DESKTOP  ≥ 768px
   ────────────────────────────────────────────*/
@media (min-width: 768px) {

  /* Root layout: sidebar + content side by side */
  body {
    display: flex;
    align-items: stretch;
    min-height: 100vh;
  }

  /* Desktop sidebar visible */
  .desktop-sidebar {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: rgba(8, 8, 16, 0.97);
    border-right: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 500;
    padding: 0;
    overflow-y: auto;
    overflow-x: hidden;
    transition: width 0.3s cubic-bezier(.4,0,.2,1);
    scrollbar-width: none;
  }
  .desktop-sidebar::-webkit-scrollbar { display: none; }

  /* Sidebar logo area */
  .sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 18px;
    border-bottom: 1px solid var(--glass-border);
    text-decoration: none;
  }
  .sidebar-logo img {
    width: 38px; height: 38px;
    border-radius: 12px;
    flex-shrink: 0;
  }
  .sidebar-logo-text {
    font-size: 17px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
  }

  /* Sidebar nav list */
  .sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px 10px;
    flex: 1;
  }

  /* Sidebar nav item */
  .sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(.4,0,.2,1);
    text-decoration: none;
    color: var(--text-3);
    font-size: 14px;
    font-weight: 600;
    position: relative;
    overflow: hidden;
  }
  .sidebar-nav-item:hover {
    background: var(--glass);
    color: var(--text-1);
  }
  .sidebar-nav-item.active {
    background: linear-gradient(135deg, rgba(124,92,255,0.12), rgba(255,107,157,0.05));
    color: var(--primary);
    border: 1px solid rgba(124,92,255,0.2);
  }
  .sidebar-nav-item.active::before {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: var(--primary);
    border-radius: 0 4px 4px 0;
    box-shadow: -4px 0 12px var(--primary);
  }
  .sidebar-nav-item.active .sidebar-nav-icon svg {
    stroke: var(--primary);
    filter: drop-shadow(0 0 6px rgba(124,92,255,0.5));
  }
  .sidebar-nav-icon {
    width: 22px; height: 22px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .sidebar-nav-icon svg {
    width: 22px; height: 22px;
    stroke: currentColor;
    transition: stroke 0.2s;
  }
  .sidebar-nav-label {
    white-space: nowrap;
    overflow: hidden;
    font-family: inherit;
  }
  .sidebar-nav-badge {
    margin-right: auto;
    background: var(--danger);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    border-radius: 10px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
  }

  /* Plus create button in sidebar */
  .sidebar-plus-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    border-radius: 14px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark, #5B3DDB));
    color: #fff;
    margin: 0 10px 12px;
    transition: all 0.2s;
    box-shadow: 0 4px 16px rgba(124,92,255,0.3);
  }
  .sidebar-plus-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(124,92,255,0.45);
  }
  .sidebar-plus-btn svg {
    width: 22px; height: 22px;
    stroke: #fff;
    flex-shrink: 0;
  }

  /* Sidebar user card */
  .sidebar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-top: 1px solid var(--glass-border);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s;
    margin-top: auto;
  }
  .sidebar-user:hover { background: var(--glass); }
  .sidebar-user-info { overflow: hidden; }
  .sidebar-user-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .sidebar-user-handle {
    font-size: 11px;
    color: var(--text-3);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* App wrapper shifts right to clear sidebar */
  .app-wrapper {
    margin-left: var(--sidebar-width);
    max-width: calc(100% - var(--sidebar-width));
    width: calc(100% - var(--sidebar-width));
  }

  /* Page content on desktop — card style */
  .page-content {
    padding-bottom: 40px;
    max-width: var(--content-max);
    margin: 0 auto;
    padding-top: 8px;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    margin: 16px auto;
    background: rgba(8,8,16,0.6);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
    min-height: calc(100vh - 32px);
  }

  /* Hide mobile bottom nav on desktop */
  .bottom-nav { display: none !important; }

  /* Desktop rooms grid — 3+ columns */
  .rooms-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 20px;
  }

  /* Page header sticky */
  .page-header {
    border-radius: 20px 20px 0 0;
    padding: 18px 24px;
  }

  /* Wider modals on desktop */
  .bottom-sheet {
    border-radius: 24px;
    max-width: 600px;
    margin: auto;
  }
  .modal-overlay {
    align-items: center;
  }
  .modal-center {
    max-width: 480px;
  }
}

/* ─────────────────────────────────────────────
   WIDE DESKTOP  ≥ 1200px
   ────────────────────────────────────────────*/
@media (min-width: 1200px) {
  :root {
    --sidebar-width: 280px;
    --content-max: 1000px;
  }

  .rooms-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }
}

/* ─────────────────────────────────────────────
   SVG ICON BUTTON SYSTEM
   ────────────────────────────────────────────*/

/* Icon-only round button */
.btn-icon-round {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(.4,0,.2,1);
  flex-shrink: 0;
  color: var(--text-1);
}
.btn-icon-round:hover {
  background: var(--glass-strong);
  transform: scale(1.08);
}
.btn-icon-round:active { transform: scale(0.93); }
.btn-icon-round svg {
  width: 20px; height: 20px;
  stroke: currentColor;
  pointer-events: none;
}

/* Icon + label button (SVG left of text) */
.btn-svg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-md, 14px);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: all 0.2s cubic-bezier(.4,0,.2,1);
  font-family: inherit;
  white-space: nowrap;
  line-height: 1;
}
.btn-svg:active { transform: scale(0.96); }
.btn-svg svg {
  width: 18px; height: 18px;
  stroke: currentColor;
  flex-shrink: 0;
  pointer-events: none;
}
.btn-svg.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark, #5B3DDB));
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.btn-svg.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(124,92,255,0.45);
}
.btn-svg.btn-glass {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-1);
}
.btn-svg.btn-glass:hover { background: var(--glass-strong); }
.btn-svg.btn-danger {
  background: linear-gradient(135deg, var(--danger), #cc0000);
  color: #fff;
}
.btn-svg.btn-sm {
  padding: 8px 14px;
  font-size: 12px;
  border-radius: 10px;
}
.btn-svg.btn-sm svg { width: 16px; height: 16px; }
.btn-svg.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--r-lg, 20px);
}
.btn-svg.btn-lg svg { width: 20px; height: 20px; }
.btn-svg.btn-full { width: 100%; }

/* Ripple on button tap */
.btn-svg, .btn, .sidebar-nav-item, .nav-item {
  position: relative;
  overflow: hidden;
}
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  transform: scale(0);
  animation: ripple-out 0.55s linear;
  pointer-events: none;
}
@keyframes ripple-out {
  to { transform: scale(4); opacity: 0; }
}

/* ─────────────────────────────────────────────
   EMPTY STATE  (for no-data screens)
   ────────────────────────────────────────────*/
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
  gap: 16px;
}
.empty-state-icon {
  width: 80px; height: 80px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: float 3s ease-in-out infinite;
}
.empty-state-icon svg {
  width: 40px; height: 40px;
  stroke: var(--primary);
  opacity: 0.8;
}
.empty-state-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-1);
}
.empty-state-desc {
  font-size: 14px;
  color: var(--text-3);
  max-width: 260px;
  line-height: 1.6;
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}

/* ─────────────────────────────────────────────
   SCROLL SNAP for mobile pages
   ────────────────────────────────────────────*/
.snap-container {
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  height: 100vh;
  -webkit-overflow-scrolling: touch;
}
.snap-item {
  scroll-snap-align: start;
  height: 100vh;
}

/* ─────────────────────────────────────────────
   PAGE TRANSITION ANIMATION
   ────────────────────────────────────────────*/
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.page-content {
  animation: pageFadeIn 0.35s cubic-bezier(.4,0,.2,1) both;
}

/* ─────────────────────────────────────────────
   ENHANCED NAV ACTIVE INDICATOR
   ────────────────────────────────────────────*/
.nav-item {
  transition: all 0.2s cubic-bezier(.4,0,.2,1);
}
.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
}
.nav-item.active .nav-icon svg {
  stroke: var(--primary);
  filter: drop-shadow(0 0 6px rgba(124,92,255,0.6));
}
.nav-item.active .nav-label {
  color: var(--primary);
}

/* ─────────────────────────────────────────────
   CARD HOVER LIFT (smooth)
   ────────────────────────────────────────────*/
.room-card {
  transition: transform 0.25s cubic-bezier(.4,0,.2,1),
              box-shadow 0.25s cubic-bezier(.4,0,.2,1),
              border-color 0.25s;
}
.room-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 16px 40px rgba(124,92,255,0.2);
}

/* ─────────────────────────────────────────────
   PWA BANNER — responsive position
   ────────────────────────────────────────────*/
@media (min-width: 768px) {
  .pwa-install-banner {
    left: calc(var(--sidebar-width) + 16px);
    bottom: 20px;
    max-width: 400px;
  }
}

/* ─────────────────────────────────────────────
   SCROLLBAR — desktop wider track
   ────────────────────────────────────────────*/
@media (min-width: 768px) {
  ::-webkit-scrollbar { width: 6px; }
}