/* ============================================
   Unified Navigation System
   Three-tab nav + side panel / overlay system
   Responsive: mobile, tablet, desktop
   ============================================ */

/* ── CSS Custom Properties ── */
:root {
  --unav-bg: #1a1a2e;
  --unav-bg-elevated: #252542;
  --unav-surface: #2d1b4e;
  --unav-surface-hover: #3d2b5e;
  --unav-surface-active: #4d3b6e;
  --unav-border: rgba(107, 74, 163, 0.4);
  --unav-border-strong: rgba(107, 74, 163, 0.7);
  --unav-text: #e2d5f0;
  --unav-text-muted: #9b8ab8;
  --unav-text-dim: #6b5a88;
  --unav-accent: #ffd700;
  --unav-accent-hover: #ffe44d;
  --unav-accent-glow: rgba(255, 215, 0, 0.15);
  --unav-tab-active: #6b4aa3;
  --unav-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --unav-radius: 12px;
  --unav-radius-sm: 8px;
  --unav-transition: 0.2s ease;
  --unav-panel-width: 50vw;
  --unav-panel-min: 420px;
  --unav-panel-max: 95vw;
  --unav-z-nav: 90000;
  --unav-z-panel: 89000;
  --unav-z-overlay: 88000;
}

/* Light mode override */
[data-theme="light"] {
  --unav-bg: #f0edf5;
  --unav-bg-elevated: #fff;
  --unav-surface: #ece4f6;
  --unav-surface-hover: #e0d4f0;
  --unav-surface-active: #d4c4ea;
  --unav-border: rgba(107, 74, 163, 0.2);
  --unav-border-strong: rgba(107, 74, 163, 0.45);
  --unav-text: #2d1b4e;
  --unav-text-muted: #6b5a88;
  --unav-text-dim: #9b8ab8;
  --unav-accent: #b8860b;
  --unav-accent-hover: #d4a017;
  --unav-accent-glow: rgba(184, 134, 11, 0.1);
  --unav-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

/* ── Trigger Button (Floating) ── */
.unav-trigger {
  position: fixed;
  z-index: var(--unav-z-nav);
  background: var(--unav-surface);
  border: 2px solid var(--unav-border-strong);
  color: var(--unav-accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--unav-shadow);
  transition: transform var(--unav-transition), background var(--unav-transition), box-shadow var(--unav-transition);
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}
.unav-trigger:hover {
  background: var(--unav-surface-hover);
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.5);
}
.unav-trigger:active {
  transform: scale(0.95);
}
.unav-trigger svg {
  width: 22px;
  height: 22px;
  pointer-events: none;
}

/* Desktop: bottom-left corner */
.unav-trigger {
  bottom: 24px;
  left: 24px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
}

/* ── Backdrop ── */
.unav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--unav-z-nav) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.unav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* ── Main Nav Panel ── */
.unav-panel {
  position: fixed;
  z-index: var(--unav-z-nav);
  background: var(--unav-bg);
  border: 1px solid var(--unav-border);
  box-shadow: var(--unav-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
  overflow: hidden;
}

/* Desktop: popover from bottom-left */
.unav-panel {
  bottom: 84px;
  left: 24px;
  width: 380px;
  max-height: 70vh;
  border-radius: var(--unav-radius);
  transform: translateY(16px) scale(0.96);
  opacity: 0;
  pointer-events: none;
}
.unav-panel.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}

/* ── Search Bar ── */
.unav-search-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px 6px;
  flex-shrink: 0;
  position: relative;
}
.unav-search-icon {
  position: absolute;
  left: 22px;
  width: 14px;
  height: 14px;
  color: var(--unav-text-dim);
  pointer-events: none;
  flex-shrink: 0;
}
.unav-search {
  flex: 1;
  padding: 8px 12px 8px 34px;
  border-radius: var(--unav-radius-sm);
  border: 1px solid var(--unav-border);
  background: var(--unav-bg-elevated);
  color: var(--unav-text);
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
  font-weight: 500;
  outline: none;
  transition: border-color var(--unav-transition), box-shadow var(--unav-transition);
  -webkit-appearance: none;
}
.unav-search::placeholder {
  color: var(--unav-text-dim);
}
.unav-search:focus {
  border-color: var(--unav-accent);
  box-shadow: 0 0 0 2px var(--unav-accent-glow);
}
.unav-search-hint {
  font-family: 'Space Grotesk', monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--unav-text-dim);
  background: var(--unav-surface);
  border: 1px solid var(--unav-border);
  border-radius: 4px;
  padding: 2px 6px;
  line-height: 1.4;
  flex-shrink: 0;
  pointer-events: none;
}

/* ── Search Results ── */
.unav-search-results {
  padding: 4px 8px 8px;
}
.unav-search-empty {
  text-align: center;
  color: var(--unav-text-dim);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  padding: 24px 12px;
}
.unav-search-mark {
  background: rgba(255, 215, 0, 0.25);
  color: var(--unav-accent);
  border-radius: 2px;
  padding: 0 1px;
}
[data-theme="light"] .unav-search-mark {
  background: rgba(184, 134, 11, 0.18);
  color: var(--unav-accent);
}
.unav-search-tab-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--unav-text-dim);
  background: var(--unav-surface);
  border: 1px solid var(--unav-border);
  padding: 1px 6px;
  border-radius: 4px;
  margin-left: auto;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Hide tabs bar when searching */
.unav-panel.unav-searching .unav-tabs {
  display: none;
}
/* Hide pinned section when searching */
.unav-panel.unav-searching .unav-pinned-section {
  display: none !important;
}

/* ── Pinned Section ── */
.unav-pinned-section {
  padding: 4px 8px 0;
  border-bottom: 1px solid var(--unav-border);
  margin-bottom: 2px;
}
.unav-pinned-label {
  display: flex;
  align-items: center;
  gap: 5px;
}
.unav-pinned-label svg {
  width: 12px;
  height: 12px;
  color: var(--unav-accent);
  flex-shrink: 0;
}
.unav-link--pinned {
  background: var(--unav-accent-glow);
}

/* ── Pin Button ── */
.unav-link__pin-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border-radius: 5px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--unav-text-dim);
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--unav-transition), background var(--unav-transition), border-color var(--unav-transition);
  -webkit-tap-highlight-color: transparent;
  opacity: 0;
}
.unav-link:hover .unav-link__pin-btn,
.unav-link:focus-visible .unav-link__pin-btn,
.unav-link__pin-btn.pinned {
  opacity: 1;
}
.unav-link__pin-btn svg {
  width: 12px;
  height: 12px;
}
.unav-link__pin-btn:hover {
  color: var(--unav-accent);
  background: var(--unav-surface-active);
  border-color: var(--unav-accent);
}
.unav-link__pin-btn.pinned {
  color: var(--unav-accent);
}
.unav-link__pin-btn.pinned:hover {
  color: var(--unav-text-muted);
}

/* ── Footer Keyboard Hint ── */
.unav-footer-hint {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 10px;
  color: var(--unav-text-dim);
  white-space: nowrap;
  margin-left: auto;
  padding: 0 4px;
}
.unav-footer-hint kbd {
  font-family: 'Space Grotesk', monospace;
  font-size: 10px;
  font-weight: 700;
  color: var(--unav-text-muted);
  background: var(--unav-surface);
  border: 1px solid var(--unav-border);
  border-radius: 3px;
  padding: 1px 4px;
  line-height: 1.3;
}

/* ── Tab Bar (3 sections) ── */
.unav-tabs {
  display: flex;
  background: var(--unav-bg-elevated);
  border-bottom: 1px solid var(--unav-border);
  flex-shrink: 0;
  padding: 6px 6px 0;
  gap: 2px;
}
.unav-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  background: transparent;
  border: none;
  color: var(--unav-text-muted);
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--unav-radius-sm) var(--unav-radius-sm) 0 0;
  transition: color var(--unav-transition), background var(--unav-transition);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.unav-tab:hover {
  color: var(--unav-text);
  background: var(--unav-surface);
}
.unav-tab.active {
  color: var(--unav-accent);
  background: var(--unav-bg);
  border: 1px solid var(--unav-border);
  border-bottom-color: var(--unav-bg);
  margin-bottom: -1px;
}
.unav-tab svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ── Tab Content Area ── */
.unav-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--unav-border) transparent;
}
.unav-content::-webkit-scrollbar {
  width: 5px;
}
.unav-content::-webkit-scrollbar-thumb {
  background: var(--unav-border);
  border-radius: 4px;
}

.unav-section {
  display: none;
  padding: 8px;
}
.unav-section.active {
  display: block;
}

/* ── Section Group Label ── */
.unav-group-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--unav-text-dim);
  padding: 12px 10px 4px;
  margin: 0;
}

/* ── Navigation Links ── */
.unav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--unav-radius-sm);
  color: var(--unav-text);
  text-decoration: none;
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  font-weight: 500;
  transition: background var(--unav-transition), color var(--unav-transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.unav-link:hover {
  background: var(--unav-surface-hover);
  color: var(--unav-accent);
}
.unav-link:focus-visible {
  background: var(--unav-surface-hover);
  color: var(--unav-accent);
  outline: 2px solid var(--unav-accent);
  outline-offset: -2px;
}
.unav-link.current {
  background: var(--unav-accent-glow);
  color: var(--unav-accent);
  font-weight: 700;
}
.unav-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}
.unav-link:hover svg,
.unav-link.current svg {
  opacity: 1;
}

/* ── Open-in-Panel Buttons ── */
.unav-link__panel-btns {
  display: flex;
  gap: 3px;
  margin-left: auto;
  flex-shrink: 0;
}
.unav-link.deprecated {
  opacity: 0.45;
  order: 99;
}
.unav-link.deprecated:hover { opacity: 0.7; }
.unav-deprecated-badge {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--unav-text-muted);
  background: var(--unav-border);
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: 6px;
  flex-shrink: 0;
}
.unav-link__panel-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border-radius: 5px;
  border: 1px solid var(--unav-border);
  background: var(--unav-surface);
  color: var(--unav-text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--unav-transition), background var(--unav-transition), border-color var(--unav-transition);
  -webkit-tap-highlight-color: transparent;
}
.unav-link__panel-btn svg {
  width: 12px;
  height: 12px;
  opacity: 0.65;
}
.unav-link__panel-btn:hover,
.unav-link__panel-btn:active {
  color: var(--unav-accent);
  background: var(--unav-surface-active);
  border-color: var(--unav-accent);
}
.unav-link__panel-btn:hover svg,
.unav-link__panel-btn:active svg {
  opacity: 1;
}

/* ── Footer / Utilities ── */
.unav-footer {
  flex-shrink: 0;
  padding: 8px;
  border-top: 1px solid var(--unav-border);
  display: flex;
  gap: 4px;
}
.unav-footer-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  border-radius: var(--unav-radius-sm);
  border: none;
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  transition: all var(--unav-transition);
  -webkit-tap-highlight-color: transparent;
}
.unav-footer-btn svg {
  width: 14px;
  height: 14px;
}
.unav-footer-btn--theme {
  background: var(--unav-surface);
  color: var(--unav-text-muted);
}
.unav-footer-btn--theme:hover {
  background: var(--unav-surface-hover);
  color: var(--unav-text);
}
.unav-footer-btn--signout {
  background: transparent;
  color: var(--unav-text-dim);
}
.unav-footer-btn--signout:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

/* ============================================
   Side Panel / Overlay (iframe-based)
   Shared styles for both left and right panels
   ============================================ */
.unav-side-panel {
  position: fixed;
  top: 0;
  width: var(--unav-panel-width);
  min-width: var(--unav-panel-min);
  max-width: var(--unav-panel-max);
  height: 100vh;
  height: 100dvh;
  z-index: var(--unav-z-panel);
  background: var(--unav-bg);
  box-shadow: -8px 0 40px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Right Panel ── */
.unav-side-panel--right {
  right: 0;
  border-left: 2px solid var(--unav-border-strong);
  transform: translateX(100%);
}
.unav-side-panel--right.open {
  transform: translateX(0);
}

/* ── Left Panel ── */
.unav-side-panel--left {
  left: 0;
  border-right: 2px solid var(--unav-border-strong);
  box-shadow: 8px 0 40px rgba(0, 0, 0, 0.4);
  transform: translateX(-100%);
}
.unav-side-panel--left.open {
  transform: translateX(0);
}

/* Side panel header */
.unav-side-panel__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--unav-bg-elevated);
  border-bottom: 1px solid var(--unav-border);
  flex-shrink: 0;
  min-height: 44px;
}
.unav-side-panel__title {
  flex: 1;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--unav-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.unav-side-panel__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: none;
  background: var(--unav-surface);
  color: var(--unav-text-muted);
  cursor: pointer;
  transition: all var(--unav-transition);
  flex-shrink: 0;
}
.unav-side-panel__btn:hover {
  background: var(--unav-surface-hover);
  color: var(--unav-text);
}
.unav-side-panel__btn--close:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}
.unav-side-panel__btn svg {
  width: 16px;
  height: 16px;
}

/* Collapse button accent */
.unav-side-panel__btn--collapse {
  margin-right: auto; /* push remaining header items right */
}

/* ── Collapsed state (right panel) ── */
.unav-side-panel--right.collapsed {
  width: 40px !important;
  min-width: 40px !important;
  max-width: 40px !important;
}
/* ── Collapsed state (left panel) ── */
.unav-side-panel--left.collapsed {
  width: 40px !important;
  min-width: 40px !important;
  max-width: 40px !important;
}
.unav-side-panel.collapsed .unav-side-panel__header {
  flex-direction: column;
  padding: 8px 4px;
  gap: 8px;
}
.unav-side-panel.collapsed .unav-side-panel__title,
.unav-side-panel.collapsed [data-sp-action="pop-out"],
.unav-side-panel.collapsed [data-sp-action="close"] {
  display: none;
}
.unav-side-panel.collapsed .unav-side-panel__btn--collapse {
  margin-right: 0;
}
.unav-side-panel.collapsed .unav-side-panel__iframe-wrap {
  display: none;
}
.unav-side-panel.collapsed .unav-side-panel__resize {
  display: none;
}

/* iframe container */
.unav-side-panel__iframe-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
}
.unav-side-panel__iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  background: var(--unav-bg);
}
.unav-side-panel__loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--unav-text-muted);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.unav-side-panel__loading.hidden {
  opacity: 0;
}

/* Resize handle for right side panel */
.unav-side-panel__resize {
  position: absolute;
  top: 0;
  left: -12px;
  width: 24px;
  height: 100%;
  cursor: col-resize;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none; /* prevent scroll interference on touch */
}
/* Resize handle for left panel (on the right edge) */
.unav-side-panel__resize--right {
  left: auto;
  right: -12px;
}
/* Visible grip indicator */
.unav-side-panel__resize::before {
  content: '';
  width: 4px;
  height: 48px;
  border-radius: 4px;
  background: var(--unav-border);
  transition: background 0.2s ease, height 0.2s ease, box-shadow 0.2s ease;
}
.unav-side-panel__resize:hover::before,
.unav-side-panel__resize.active::before {
  background: var(--unav-accent);
  height: 64px;
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}
.unav-side-panel__resize:hover,
.unav-side-panel__resize.active {
  background: rgba(255, 215, 0, 0.06);
}

/* When both panels are open, limit max width so they don't overlap */
body.unav-panel-open .unav-side-panel {
  --unav-panel-max: 45vw;
}

/* Side panel overlay backdrop */
.unav-side-panel-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--unav-z-panel) - 1);
  background: transparent;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.unav-side-panel-backdrop.open {
  opacity: 0;
  pointer-events: none;
}

/* ============================================
   Responsive: Tablet (≤1024px)
   ============================================ */
@media (max-width: 1024px) {
  .unav-panel {
    width: 340px;
  }
  .unav-side-panel {
    --unav-panel-width: 65vw;
    --unav-panel-min: 360px;
  }
}

/* ============================================
   Responsive: Mobile (≤640px)
   ============================================ */
@media (max-width: 640px) {
  /* Trigger becomes bottom-center pill */
  .unav-trigger {
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
  }
  .unav-trigger:hover {
    transform: translateX(-50%) scale(1.05);
  }
  .unav-trigger:active {
    transform: translateX(-50%) scale(0.95);
  }

  /* Nav panel becomes bottom sheet */
  .unav-panel {
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-height: 75vh;
    border-radius: var(--unav-radius) var(--unav-radius) 0 0;
    transform: translateY(100%);
    opacity: 1;
  }
  .unav-panel.open {
    transform: translateY(0);
  }

  /* Bottom sheet drag handle */
  .unav-panel::before {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    border-radius: 2px;
    background: var(--unav-border);
    margin: 8px auto 4px;
    flex-shrink: 0;
  }

  .unav-tab {
    font-size: 12px;
    padding: 10px 6px;
  }

  /* Hide keyboard hints on mobile */
  .unav-footer-hint {
    display: none;
  }
  .unav-search-hint {
    display: none;
  }

  /* Side panels become full overlay on mobile */
  .unav-side-panel {
    width: 100% !important;
    min-width: unset !important;
    max-width: unset !important;
  }
  .unav-side-panel__resize {
    display: none;
  }
  /* Hide left panel button on mobile (one panel at a time) */
  .unav-link__panel-btn--left {
    display: none;
  }

}

/* ============================================
   Animations
   ============================================ */
@keyframes unav-spin {
  to { transform: rotate(360deg); }
}
.unav-side-panel__loading svg {
  animation: unav-spin 1s linear infinite;
}

/* Print: hide nav entirely */
@media print {
  .unav-trigger,
  .unav-panel,
  .unav-backdrop,
  .unav-side-panel,
  .unav-side-panel-backdrop {
    display: none !important;
  }
}