/* =============================================
   Schedule Viewer - Main Stylesheet
   ============================================= */

/* --- Custom Scrollbar disabled for cross-browser console cleanliness --- */

/* --- Transitions --- */
.fade-enter-active, .fade-leave-active { transition: opacity 0.5s ease; }
.fade-enter-from, .fade-leave-to { opacity: 0; }

/* --- Skeleton Loader --- */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: 4px;
}
.dark .skeleton {
    background: linear-gradient(90deg, #374151 25%, #4b5563 50%, #374151 75%);
    background-size: 200% 100%;
}
@keyframes skeleton-pulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* --- Sticky Day Headers --- */
.day-header-sticky {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* --- Lesson Type Badges --- */
.lesson-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 9999px;
    letter-spacing: 0.02em;
}
.lesson-type-lecture { background: #dbeafe; color: #1e40af; border: 1px solid #93c5fd; }
.lesson-type-practice { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.lesson-type-lab { background: #ffedd5; color: #9a3412; border: 1px solid #fdba74; }
.lesson-type-seminar { background: #f3e8ff; color: #6b21a8; border: 1px solid #c4b5fd; }
.lesson-type-consult { background: #fef3c7; color: #92400e; border: 1px solid #fcd34d; }
.lesson-type-individual { background: #e0e7ff; color: #3730a3; border: 1px solid #a5b4fc; }
.lesson-type-default { background: #f3f4f6; color: #374151; border: 1px solid #d1d5db; }

.dark .lesson-type-lecture { background: #1e3a5f; color: #93c5fd; border-color: #1e40af; }
.dark .lesson-type-practice { background: #14432a; color: #86efac; border-color: #166534; }
.dark .lesson-type-lab { background: #431407; color: #fdba74; border-color: #9a3412; }
.dark .lesson-type-seminar { background: #3b0764; color: #c4b5fd; border-color: #6b21a8; }
.dark .lesson-type-consult { background: #451a03; color: #fcd34d; border-color: #92400e; }
.dark .lesson-type-individual { background: #1e1b4b; color: #a5b4fc; border-color: #3730a3; }
.dark .lesson-type-default { background: #374151; color: #d1d5db; border-color: #4b5563; }

/* --- Mobile Sidebar Drawer --- */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 40;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.sidebar-drawer {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 85%;
    max-width: 380px;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}
.sidebar-drawer.open {
    transform: translateX(0);
}

.mobile-menu-btn {
    display: none;
}

@media (max-width: 1023px) {
    .mobile-menu-btn {
        display: flex;
    }
    .desktop-sidebar {
        display: none !important;
    }
}
@media (min-width: 1024px) {
    .sidebar-drawer, .sidebar-overlay {
        display: none !important;
    }
}

/* --- Compact Table View --- */
.schedule-table {
    width: 100%;
    border-collapse: collapse;
}
.schedule-table th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 8px 12px;
    white-space: nowrap;
}
.schedule-table td {
    font-size: 0.85rem;
    padding: 6px 12px;
    border-bottom: 1px solid #e5e7eb;
    vertical-align: top;
}
.dark .schedule-table td {
    border-bottom-color: #374151;
}
.schedule-table tr:hover td {
    background: #f0f9ff;
}
.dark .schedule-table tr:hover td {
    background: #1e3a5f;
}

/* --- Countdown Banner --- */
.countdown-banner {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    padding: 12px 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    animation: countdown-glow 3s ease-in-out infinite alternate;
}
.dark .countdown-banner {
    background: linear-gradient(135deg, #1e40af, #5b21b6);
    box-shadow: 0 4px 15px rgba(30, 64, 175, 0.4);
}
@keyframes countdown-glow {
    0% { box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3); }
    100% { box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4); }
}

/* --- Favorites --- */
.favorites-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid;
}
.favorites-chip:hover { transform: scale(1.05); }
.favorites-chip .remove-fav {
    opacity: 0;
    transition: opacity 0.2s;
    font-size: 0.65rem;
}
.favorites-chip:hover .remove-fav { opacity: 1; }

/* --- Quick Date Buttons --- */
.quick-date-btn {
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid #d1d5db;
    cursor: pointer;
    transition: all 0.15s;
}
.quick-date-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.quick-date-btn.active {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}
.dark .quick-date-btn {
    border-color: #4b5563;
    color: #d1d5db;
}
.dark .quick-date-btn:hover {
    background: #374151;
}
.dark .quick-date-btn.active {
    background: #2563eb;
    border-color: #2563eb;
    color: white;
}

/* --- Share / Copy Toast --- */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #1f2937;
    color: white;
    padding: 10px 24px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* --- Week Navigation --- */
.week-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    border: 1px solid #e5e7eb;
}
.week-nav-btn:hover {
    background: #eff6ff;
    border-color: #93c5fd;
}
.dark .week-nav-btn {
    border-color: #4b5563;
    color: #d1d5db;
}
.dark .week-nav-btn:hover {
    background: #1e3a5f;
    border-color: #3b82f6;
}