/* TMNT: Splintered Fate — Mobile App UI
   All rules scoped to @media (max-width: 900px) with body.mobile-app
   Desktop is completely unaffected. */

@media (max-width: 900px) {

  /* ---- App Shell ---- */
  body.mobile-app {
    overflow: hidden;
    height: 100vh;
    height: 100dvh;
    --topbar-height: 48px;
    --mobile-bottom-nav-height: 56px;
  }

  /* ---- Compact Topbar ---- */
  body.mobile-app #topbar {
    height: 48px;
    padding: 0 var(--sp-3);
    gap: var(--sp-2);
  }

  body.mobile-app .topbar-left {
    flex-direction: row;
    align-items: center;
    gap: var(--sp-2);
  }

  body.mobile-app .topbar-logo {
    height: 28px;
  }

  body.mobile-app .topbar-subtitle {
    display: none;
  }

  body.mobile-app .topbar-characters {
    display: none;
  }

  /* ---- Compact Auth (topbar) ---- */

  body.mobile-app .auth-user {
    gap: 0;
  }

  body.mobile-app .auth-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
  }

  body.mobile-app #auth-container #logout-btn {
    display: none;
  }

  body.mobile-app #auth-container .btn-discord {
    padding: var(--sp-1) var(--sp-2);
    font-size: 0;
    gap: 0;
  }

  body.mobile-app #auth-container .btn-discord .icon {
    width: 20px;
    height: 20px;
  }

  /* ---- Character Indicator (topbar) ---- */
  .mobile-char-indicator {
    display: none;
  }

  body.mobile-app .mobile-char-indicator {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    margin-left: auto;
    margin-right: var(--sp-2);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }

  body.mobile-app .mobile-char-indicator img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    object-fit: cover;
  }

  body.mobile-app .mobile-char-indicator span {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--foreground);
  }

  /* ---- Full-Screen Character Picker ---- */
  .mobile-char-picker {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    background: var(--background);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--sp-6);
    gap: var(--sp-6);
  }

  .mobile-char-picker.hidden {
    display: none;
  }

  .mobile-char-picker-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    color: var(--primary);
    letter-spacing: 2px;
  }

  .mobile-char-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4);
    max-width: 320px;
    width: 100%;
  }

  .mobile-char-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-2);
    cursor: pointer;
    padding: var(--sp-3);
    border-radius: var(--radius);
    border: 2px solid transparent;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-char-cell:active {
    background: var(--muted);
  }

  .mobile-char-cell.active {
    border-color: var(--primary);
    background: var(--el-bg);
  }

  .mobile-char-cell img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 3px solid var(--border);
    object-fit: cover;
    transition: border-color var(--transition-fast);
  }

  .mobile-char-cell.active img {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary);
  }

  .mobile-char-cell span {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-secondary);
  }

  .mobile-char-cell.active span {
    color: var(--primary);
  }

  /* ---- Bottom Navigation Bar ---- */
  .mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 56px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .mobile-bottom-nav.hidden {
    display: none;
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--sp-1) var(--sp-2);
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: color var(--transition-fast);
    font-family: var(--font-body);
    -webkit-tap-highlight-color: transparent;
  }

  .mobile-nav-item.active {
    color: var(--primary);
  }

  .mobile-nav-item .icon {
    width: 22px;
    height: 22px;
  }

  .mobile-nav-item span {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.3px;
  }

  /* ---- Main Layout: Full-Screen Panels ---- */
  body.mobile-app #main {
    height: calc(100vh - 48px - 56px);
    height: calc(100dvh - 48px - 56px);
    flex-direction: column;
  }

  body.mobile-app .tab-bar {
    display: none;
  }

  body.mobile-app .sidebar-toggle {
    display: none !important;
  }

  body.mobile-app #browse-panel {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }

  body.mobile-app #browse-panel.mobile-panel-hidden {
    display: none;
  }

  body.mobile-app #sidebar {
    position: static;
    width: 100%;
    height: 100%;
    transform: none;
    border-left: none;
    box-shadow: none;
    display: none;
    overflow-y: auto;
  }

  body.mobile-app #sidebar.mobile-panel-active {
    display: flex;
  }

  /* ---- Build Sub-Toggle ---- */
  .mobile-build-toggle {
    margin-right: auto;
  }

  /* ---- Mobile Search Input ---- */
  body.mobile-app .mobile-search-wrapper {
    width: 100%;
    margin-bottom: var(--sp-2);
    display: flex;
  }

  body.mobile-app .mobile-search-input {
    width: 100%;
  }

  .mobile-match-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    display: inline-block;
    margin-left: 2px;
    vertical-align: super;
  }

  /* ---- Panel Transition ---- */
  .mobile-panel-enter {
    animation: mobileSlideIn 0.2s ease forwards;
  }

  @keyframes mobileSlideIn {
    from {
      opacity: 0;
      transform: translateY(8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}