/* ========================================
   ALICE OFFICE — Shared Navigation System
   ======================================== */

/* ---- Root Variables ---- */
:root {
  --ao-bg: #0c0c14;
  --ao-bg-elevated: #12121e;
  --ao-card: rgba(30, 30, 46, 0.6);
  --ao-border: rgba(255, 255, 255, 0.08);
  --ao-border-highlight: rgba(99, 102, 241, 0.3);
  --ao-text: #f1f5f9;
  --ao-text-secondary: #94a3b8;
  --ao-accent: #6366f1;
  --ao-accent-hover: #818cf8;
  --ao-gold: #fbbf24;
  --ao-danger: #ef4444;
  --ao-success: #10b981;
  --ao-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ---- Liquid Glass Base ---- */
.liquid-glass {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.liquid-glass-strong {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* ---- Body Background ---- */
.ao-body {
  font-family: 'Inter', 'Noto Sans TC', sans-serif;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #0c0c14 0%, #0a0a12 100%);
  background-attachment: fixed;
  color: var(--ao-text);
  min-height: 100vh;
}

/* Optional: subtle grid overlay for texture */
.ao-body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ---- Navigation Bar ---- */
.ao-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ao-nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.ao-nav-logo .logo-icon {
  font-size: 26px;
  filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
}

.ao-nav-logo .logo-text {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--ao-text);
  letter-spacing: -0.5px;
}

.ao-nav-logo .logo-text span {
  color: var(--ao-accent);
}

/* ---- Hamburger Toggle ---- */
.ao-hamburger {
  display: none;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--ao-border);
  background: rgba(255,255,255,0.05);
  color: var(--ao-text);
  font-size: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.ao-hamburger:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--ao-border-highlight);
}

/* ---- Main Menu Links ---- */
.ao-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.ao-menu-link {
  padding: 8px 14px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--ao-text-secondary);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  border: 1px solid transparent;
  white-space: nowrap;
}

.ao-menu-link:hover {
  color: var(--ao-text);
  background: rgba(255,255,255,0.05);
  border-color: var(--ao-border);
}

.ao-menu-link.active {
  color: var(--ao-text);
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.15);
}

.ao-menu-link .menu-icon {
  font-size: 15px;
}

/* ---- Off Work (Logout) Button ---- */
.ao-menu-link.logout {
  color: var(--ao-danger);
  border-color: rgba(239, 68, 68, 0.2);
}

.ao-menu-link.logout:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.4);
}

/* ---- Sub-Session Tabs ---- */
.ao-subtabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--ao-border);
}

.ao-subtab {
  padding: 6px 14px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--ao-text-secondary);
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--ao-border);
  background: rgba(255,255,255,0.03);
  transition: all 0.2s;
  white-space: nowrap;
}

.ao-subtab:hover {
  color: var(--ao-text);
  background: rgba(255,255,255,0.06);
  border-color: var(--ao-border-highlight);
}

.ao-subtab.active {
  color: var(--ao-text);
  background: rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.25);
}

/* ---- Mobile Responsive ---- */
@media (max-width: 768px) {
  .ao-hamburger {
    display: block;
  }

  .ao-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px;
    gap: 4px;
    background: rgba(12, 12, 20, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ao-border);
    box-shadow: var(--ao-shadow);
  }

  .ao-menu.open {
    display: flex;
  }

  .ao-menu-link {
    padding: 12px 14px;
    justify-content: flex-start;
  }

  /* Subtabs: 2 per row on mobile */
  .ao-subtabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .ao-subtab {
    text-align: center;
    padding: 10px 8px;
  }
}

/* ---- Page Content Wrapper ---- */
.ao-content {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px;
}

/* ---- Utility: Dark text on solid bg inside glass ---- */
.ao-solid-section {
  background: var(--ao-bg-elevated);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--ao-border);
}

.ao-solid-section h1,
.ao-solid-section h2,
.ao-solid-section h3,
.ao-solid-section p {
  color: var(--ao-text);
}

/* ---- Card Styles (Liquid Glass) ---- */
.ao-card {
  composes: liquid-glass;
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s;
}

.ao-card:hover {
  border-color: var(--ao-border-highlight);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 20px rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

/* ---- Buttons ---- */
.ao-btn {
  padding: 10px 20px;
  border-radius: 10px;
  border: 1px solid var(--ao-border);
  background: rgba(255,255,255,0.05);
  color: var(--ao-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ao-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--ao-border-highlight);
}

.ao-btn-primary {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--ao-accent-hover);
}

.ao-btn-primary:hover {
  background: rgba(99, 102, 241, 0.3);
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.2);
}