/* style.css */
:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #131a2c;
    --card-bg: rgba(22, 30, 49, 0.75);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --primary: #4f46e5;
    --primary-hover: #6366f1;
    --primary-glow: rgba(79, 70, 229, 0.4);
    --input-bg: #0f172a;
    
    --accent-cyan: #06b6d4;
    --accent-teal: #0d9488;
    --accent-amber: #d97706;
    --accent-rose: #e11d48;
    
    /* Logo theme variables */
    --logo-color-1: var(--accent-cyan);
    --logo-color-2: var(--accent-rose);
    --logo-bg: rgba(6, 182, 212, 0.12);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Card customization variables */
    --card-student-color: #ffffff;
    --card-title-color: rgba(255, 255, 255, 0.9);
    --card-lecturer-color: rgba(255, 255, 255, 0.75);
    --card-dashes-color: rgba(255, 255, 255, 0.12);

    --card-sarjana-bg: rgba(14, 165, 233, 0.15);
    --card-sarjana-text: #38bdf8;
    --card-sarjana-border: #0ea5e9;

    --card-magister-bg: rgba(109, 40, 217, 0.15);
    --card-magister-text: #c084fc;
    --card-magister-border: #7c3aed;

    --card-doktor-bg: rgba(236, 72, 153, 0.15);
    --card-doktor-text: #fbcfe8;
    --card-doktor-border: #ec4899;

    --card-pkl-bg: rgba(13, 148, 136, 0.15);
    --card-pkl-text: #99f6e4;
    --card-pkl-border: var(--accent-teal);

    --card-rapat-bg: rgba(217, 119, 6, 0.15);
    --card-rapat-text: #fde68a;
    --card-rapat-border: var(--accent-amber);

    --table-header-bg: rgba(15, 23, 42, 0.8);
    --table-header-room-bg: rgba(15, 23, 42, 0.9);
    --table-room-bg: rgba(20, 28, 47, 0.4);

    --detail-section-bg: rgba(15, 23, 42, 0.4);
    --lecturer-profile-bg: rgba(15, 23, 42, 0.4);
    --lecturer-profile-hover-bg: rgba(15, 23, 42, 0.6);
    --lecturer-profile-hover-border: rgba(255, 255, 255, 0.12);

    --calendar-cell-bg: rgba(15, 23, 42, 0.3);
    --calendar-cell-hover-bg: rgba(15, 23, 42, 0.6);

    --badge-sarjana-bg: rgba(14, 165, 233, 0.25);
    --badge-sarjana-text: #38bdf8;
    --badge-magister-bg: rgba(109, 40, 217, 0.25);
    --badge-magister-text: #c084fc;
    --badge-doktor-bg: rgba(236, 72, 153, 0.2);
    --badge-doktor-text: #fbcfe8;
    --badge-pkl-bg: rgba(13, 148, 136, 0.2);
    --badge-pkl-text: #99f6e4;
    --badge-rapat-bg: rgba(217, 119, 6, 0.2);
    --badge-rapat-text: #fde68a;
}

[data-theme="light"] {
    --bg-primary: #f5f5f7; /* Apple official macOS light background */
    --bg-secondary: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.75);
    --card-border: rgba(0, 0, 0, 0.08);
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #475569;
    
    --primary: #0071e3; /* Apple official blue */
    --primary-hover: #0077ed;
    --primary-glow: rgba(0, 113, 227, 0.15);
    --input-bg: #ffffff;
    
    --accent-cyan: #0071e3;
    --accent-teal: #0d9488;
    --accent-amber: #b45309;
    --accent-rose: #be123c;

    /* Logo light theme overrides */
    --logo-color-1: var(--primary);
    --logo-color-2: var(--accent-amber);
    --logo-bg: rgba(0, 113, 227, 0.08);

    --card-student-color: var(--text-primary);
    --card-title-color: var(--text-secondary);
    --card-lecturer-color: var(--text-muted);
    --card-dashes-color: rgba(0, 0, 0, 0.12);

    --card-sarjana-bg: rgba(14, 165, 233, 0.08);
    --card-sarjana-text: #0369a1;
    --card-sarjana-border: #0ea5e9;

    --card-magister-bg: rgba(109, 40, 217, 0.08);
    --card-magister-text: #5b21b6;
    --card-magister-border: #7c3aed;

    --card-doktor-bg: rgba(236, 72, 153, 0.08);
    --card-doktor-text: #851647;
    --card-doktor-border: #ec4899;

    --card-pkl-bg: rgba(13, 148, 136, 0.08);
    --card-pkl-text: #0e615b;
    --card-pkl-border: #0d9488;

    --card-rapat-bg: rgba(217, 119, 6, 0.08);
    --card-rapat-text: #7c3a0d;
    --card-rapat-border: #d97706;

    --table-header-bg: #e5e5ea;
    --table-header-room-bg: #d1d1d6;
    --table-room-bg: #f2f2f7;

    --detail-section-bg: rgba(0, 0, 0, 0.03);
    --lecturer-profile-bg: rgba(0, 0, 0, 0.02);
    --lecturer-profile-hover-bg: rgba(0, 0, 0, 0.04);
    --lecturer-profile-hover-border: rgba(0, 0, 0, 0.12);

    --calendar-cell-bg: rgba(255, 255, 255, 0.55);
    --calendar-cell-hover-bg: rgba(255, 255, 255, 0.85);

    --badge-sarjana-bg: rgba(79, 70, 229, 0.1);
    --badge-sarjana-text: #2c258a;
    --badge-magister-bg: rgba(139, 92, 246, 0.1);
    --badge-magister-text: #4a1d96;
    --badge-doktor-bg: rgba(236, 72, 153, 0.1);
    --badge-doktor-text: #851647;
    --badge-pkl-bg: rgba(13, 148, 136, 0.1);
    --badge-pkl-text: #0e615b;
    --badge-rapat-bg: rgba(217, 119, 6, 0.1);
    --badge-rapat-text: #7c3a0d;
}

/* macOS Theme Switcher styling */
.macos-theme-switcher {
    display: inline-flex;
    background: rgba(15, 23, 42, 0.6);
    padding: 3px;
    border-radius: 30px;
    border: 1px solid var(--card-border);
    gap: 2px;
}

[data-theme="light"] .macos-theme-switcher {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.08);
}

.theme-btn {
    background: transparent;
    border: none;
    padding: 5px 14px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    outline: none;
}

.theme-btn.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 2px 8px var(--primary-glow);
}

[data-theme="light"] .theme-btn.active {
    background: #ffffff;
    color: #1d1d1f;
    box-shadow: 0 2px 6px rgba(0,0,0,0.12), 0 1px 3px rgba(0,0,0,0.08);
}

/* Overrides for Light Mode inputs */
[data-theme="light"] input,
[data-theme="light"] select,
[data-theme="light"] textarea {
    background: rgba(0, 0, 0, 0.03) !important;
    border: 1px solid rgba(0, 0, 0, 0.12) !important;
    color: #1d1d1f !important;
}
[data-theme="light"] input:focus,
[data-theme="light"] select:focus,
[data-theme="light"] textarea:focus {
    background: #ffffff !important;
    border-color: #0071e3 !important;
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15) !important;
}
[data-theme="light"] input::placeholder,
[data-theme="light"] textarea::placeholder {
    color: #86868b !important;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

[data-theme="light"] body {
    background-image: 
        radial-gradient(at 0% 0%, rgba(0, 113, 227, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(13, 148, 136, 0.04) 0px, transparent 50%);
}

/* Container */
.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--card-border);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.brand h1 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Controls (DatePicker) */
.controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    padding: 1rem 1.5rem;
    border-radius: 14px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    transition: background var(--transition-normal), border var(--transition-normal);
}

.date-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.date-picker-wrapper label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.date-input-group {
    display: flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.25rem;
}

[data-theme="light"] .date-input-group {
    background: rgba(0, 0, 0, 0.03);
}

.date-input-group input[type="date"] {
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
}

.date-input-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

[data-theme="light"] .date-input-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0);
}

.btn-nav-date {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0.5rem 0.85rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

[data-theme="light"] .btn-nav-date {
    background: rgba(0, 0, 0, 0.03);
}

.btn-nav-date:hover {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .btn-nav-date:hover {
    background: rgba(0, 0, 0, 0.06);
}

.legend-container {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* Matrix Table Styling */
.matrix-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
    margin-bottom: 2rem;
    transition: background var(--transition-normal), border var(--transition-normal);
}

[data-theme="light"] .matrix-card {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.matrix-table-wrapper {
    overflow-x: auto;
}

.matrix-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    table-layout: fixed;
}

.matrix-table th {
    padding: 0.85rem 1rem;
    background: var(--table-header-bg);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    position: sticky;
    top: 0;
    z-index: 10;
}

.matrix-table td {
    padding: 0.3rem 0.4rem;
    border-bottom: 1px solid var(--card-border);
    border-right: 1px solid var(--card-border);
}

.matrix-table th:last-child, 
.matrix-table td:last-child {
    border-right: none;
}

.matrix-table th.room-col {
    width: 200px;
    background: var(--table-header-room-bg);
}

.matrix-table th:not(.room-col) {
    /* Auto-distributed equally under table-layout: fixed */
}

.matrix-table td.room-name-cell {
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--table-room-bg);
    font-size: 0.95rem;
    text-align: center;
}

/* Cell Booking Status */
.cell-available {
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.cell-available:hover {
    background: rgba(255, 255, 255, 0.03);
}

[data-theme="light"] .cell-available:hover {
    background: rgba(0, 0, 0, 0.02);
}

.cell-available::after {
    content: '+ Pesan';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.cell-available:hover::after {
    opacity: 1;
}

/* Booking Card (inside cells) */
.booking-card {
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    height: 100%;
    min-height: 85px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

[data-theme="light"] .booking-card {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.booking-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    filter: brightness(1.1);
}

[data-theme="light"] .booking-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    filter: brightness(0.97);
}

/* Activity Category Colors */
.activity-sarjana {
    background: var(--card-sarjana-bg);
    border-left: 4px solid var(--card-sarjana-border);
    color: var(--card-sarjana-text);
}
.legend-sarjana { background: #0ea5e9; }

.activity-magister {
    background: var(--card-magister-bg);
    border-left: 4px solid var(--card-magister-border);
    color: var(--card-magister-text);
}
.legend-magister { background: #7c3aed; }

.activity-doktor {
    background: var(--card-doktor-bg);
    border-left: 4px solid var(--card-doktor-border);
    color: var(--card-doktor-text);
}
.legend-doktor { background: #ec4899; }

.activity-pkl {
    background: var(--card-pkl-bg);
    border-left: 4px solid var(--card-pkl-border);
    color: var(--card-pkl-text);
}
.legend-pkl { background: #0d9488; }

.activity-rapat {
    background: var(--card-rapat-bg);
    border-left: 4px solid var(--card-rapat-border);
    color: var(--card-rapat-text);
}
.legend-rapat { background: #d97706; }

.booking-activity {
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.booking-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.3;
}

.booking-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: auto;
}

.booking-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 70%;
}

/* Modals */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modal.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    width: 100%;
    max-width: 850px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

#detailModal .modal-content {
    max-width: 1050px;
    max-height: 95vh;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition-fast);
}

.btn-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-hover);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-academic-fields {
    grid-column: span 2;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    border-top: 1px dashed var(--card-border);
    padding-top: 1.25rem;
    margin-top: 0.5rem;
}

.form-academic-fields.hidden {
    display: none;
}

.hidden {
    display: none !important;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--card-border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.25rem;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
    color: white;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--primary-glow);
}

.btn-danger {
    background: rgba(225, 29, 72, 0.15);
    color: #fda4af;
    border: 1px solid rgba(225, 29, 72, 0.3);
}

.btn-danger:hover {
    background: var(--accent-rose);
    color: white;
}

/* Info Details (for booking view) */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-item.full-width {
    grid-column: span 2;
}

.detail-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.detail-value-highlight {
    font-weight: 600;
    color: var(--accent-cyan);
}

.detail-academic-section {
    grid-column: span 2;
    background: var(--detail-section-bg);
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid var(--card-border);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #1e293b;
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    color: var(--text-primary);
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transform: translateY(100px);
    opacity: 0;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left-color: var(--accent-teal);
}

.toast.error {
    border-left-color: var(--accent-rose);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .controls-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group.full-width,
    .form-academic-fields {
        grid-column: span 1;
    }
    
    .form-academic-fields {
        grid-template-columns: 1fr;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .detail-item.full-width,
    .detail-academic-section {
        grid-column: span 1;
    }
    
    .detail-academic-section {
        grid-template-columns: 1fr;
    }
}

/* Tab Navigation */
.tabs-nav {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.75rem;
}

.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.65rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    color: white;
    background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.tab-content {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-content.active {
    display: block;
}

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

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stats-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    padding: 1.5rem;
    border-radius: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stats-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
}

.stats-card.card-blue::before { background: var(--accent-cyan); }
.stats-card.card-purple::before { background: #8b5cf6; }
.stats-card.card-amber::before { background: var(--accent-amber); }
.stats-card.card-rose::before { background: var(--accent-rose); }

.stats-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stats-val {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.stats-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
}

.chart-card.full-width {
    grid-column: span 2;
}

.chart-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chart-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    background: var(--accent-cyan);
    border-radius: 2px;
}

.chart-container {
    position: relative;
    height: 320px;
    width: 100%;
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .charts-grid {
        grid-template-columns: 1fr;
    }
    .chart-card.full-width {
        grid-column: span 1;
    }
}

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* View Selector (Segmented Control) */
.view-selector {
    display: flex;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.25rem;
    gap: 0.25rem;
}

[data-theme="light"] .view-selector {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.08);
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.view-btn:hover {
    color: var(--text-primary);
}

.view-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

[data-theme="light"] .view-btn.active {
    background: #ffffff;
    color: #1d1d1f;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.06);
}

/* Weekly View Styles */
.weekly-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.weekly-day-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.weekly-day-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.5rem;
}

/* Monthly Calendar Styles */
.calendar-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
    margin-bottom: 2rem;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    min-width: 800px;
}

.calendar-header-cell {
    text-align: center;
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--card-border);
    letter-spacing: 0.05em;
}

.calendar-day-cell {
    min-height: 120px;
    background: var(--calendar-cell-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.calendar-day-cell:hover {
    background: var(--calendar-cell-hover-bg);
    border-color: var(--primary-hover);
}

.calendar-day-cell.other-month {
    opacity: 0.25;
}

.calendar-day-cell.today {
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.04);
    box-shadow: inset 0 0 8px rgba(6, 182, 212, 0.1);
}

.calendar-day-num {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    align-self: flex-end;
}

.calendar-day-cell.today .calendar-day-num {
    color: var(--accent-cyan);
}

.calendar-day-events {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    overflow-y: auto;
    flex-grow: 1;
    max-height: 80px;
}

/* Custom scrollbar for calendar cell event list */
.calendar-day-events::-webkit-scrollbar {
    width: 3px;
}
.calendar-day-events::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
}

.calendar-event-badge {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* Larger category badges in weekly agenda list and tables */
.weekly-agenda-container .calendar-event-badge,
.matrix-table .calendar-event-badge {
    font-size: 0.85rem !important;
    padding: 0.35rem 0.65rem !important;
    display: inline-block;
}

.badge-sarjana {
    background: var(--badge-sarjana-bg);
    color: var(--badge-sarjana-text);
    border-left: 2px solid var(--primary);
}

.badge-magister {
    background: var(--badge-magister-bg);
    color: var(--badge-magister-text);
    border-left: 2px solid #8b5cf6;
}

.badge-doktor {
    background: var(--badge-doktor-bg);
    color: var(--badge-doktor-text);
    border-left: 2px solid #ec4899;
}

.badge-pkl {
    background: var(--badge-pkl-bg);
    color: var(--badge-pkl-text);
    border-left: 2px solid var(--accent-teal);
}

.badge-rapat {
    background: var(--badge-rapat-bg);
    color: var(--badge-rapat-text);
    border-left: 2px solid var(--accent-amber);
}

@media (max-width: 768px) {
    .calendar-card {
        overflow-x: auto;
    }
}

/* Deviation / Rescheduled Time Badge */
.booking-time-deviation {
    font-size: 0.75rem;
    font-weight: 700;
    color: #fbbf24; /* Amber 400 */
    background: rgba(251, 191, 36, 0.12);
    border: 1px solid rgba(251, 191, 36, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    margin-top: 0.35rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    width: fit-content;
    box-shadow: 0 2px 6px rgba(251, 191, 36, 0.1);
}

/* Lecturer Master Data Styles */
.lecturer-photo-circle {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--card-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
    background-color: rgba(255,255,255,0.05);
}

.lecturer-initial-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    border: 2px solid var(--card-border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.lecturer-photo-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-hover);
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    background-color: rgba(255,255,255,0.05);
}

.lecturer-initial-avatar-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 2rem;
    border: 3px solid var(--primary-hover);
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
}

.lecturer-action-buttons {
    display: flex;
    gap: 0.5rem;
}

/* Lecturer Profile Card in Booking Detail */
.lecturer-profile-item {
    background: var(--lecturer-profile-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-fast);
    height: 100%;
    min-height: 110px;
    box-sizing: border-box;
}

.lecturer-profile-item:hover {
    background: var(--lecturer-profile-hover-bg);
    border-color: var(--lecturer-profile-hover-border);
}

.lecturer-profile-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0; /* Ensures text-overflow works */
}

.lecturer-profile-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.35;
}

.lecturer-profile-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.lecturer-profile-dept {
    font-size: 0.7rem;
    color: var(--accent-cyan);
    font-weight: 600;
}

/* File Upload Preview Container */
.photo-preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    grid-column: span 2;
    margin-bottom: 0.5rem;
    padding: 1rem;
    border: 1px dashed var(--card-border);
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.2);
}

/* Lecturer Avatar Badge on Booking Cards */
.dosen-avatar-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid var(--card-border);
    cursor: help;
    transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .dosen-avatar-badge {
    background: rgba(0, 0, 0, 0.05);
}

.dosen-avatar-badge:hover {
    transform: scale(1.15);
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary-hover);
    box-shadow: 0 3px 6px rgba(99, 102, 241, 0.3);
}

/* Tom Select Overrides for Dark & Light Themes */
.ts-wrapper .ts-control {
    background: var(--input-bg) !important;
    border: 1px solid var(--card-border) !important;
    color: var(--text-primary) !important;
    border-radius: 8px !important;
    padding: 0.75rem !important;
    font-size: 0.9rem !important;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast) !important;
}

.ts-wrapper.focus .ts-control {
    border-color: var(--primary-hover) !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2) !important;
}

/* Dropdown Menu (Solid Background!) */
.ts-dropdown {
    background: var(--input-bg) !important;
    border: 1px solid var(--card-border) !important;
    border-radius: 8px !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3) !important;
    color: var(--text-primary) !important;
    z-index: 2000 !important;
}

/* Light Theme Dropdown Box Shadow */
[data-theme="light"] .ts-dropdown {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08) !important;
}

.ts-dropdown .active {
    background: var(--primary) !important;
    color: white !important;
}

.ts-dropdown .option {
    padding: 0.65rem 0.75rem !important;
    cursor: pointer;
}

.ts-wrapper .ts-control input {
    color: var(--text-primary) !important;
}

/* Hide the default dropdown arrow and style Tom Select's arrow */
.ts-wrapper.single .ts-control::after {
    border-color: var(--text-secondary) transparent transparent transparent !important;
}
.ts-wrapper.single.dropdown-active .ts-control::after {
    border-color: transparent transparent var(--text-secondary) transparent !important;
}

/* Brand Logo Styling */
.brand-logo-svg {
    height: 52px;
    width: 52px;
    margin-right: 0.75rem;
    flex-shrink: 0;
    transition: var(--transition-normal);
}
.brand-logo-svg:hover {
    transform: rotate(5deg) scale(1.05);
}

/* Global Font Size Enhancements */
body {
    font-size: 15px;
}

/* Tables & Grid Font Sizes */
.matrix-table th {
    font-size: 0.95rem;
}
.matrix-table td {
    font-size: 0.95rem;
}

/* Weekly Agenda List Table Font Sizes */
.weekly-agenda-container th {
    font-size: 0.9rem !important;
}
.weekly-agenda-container td {
    font-size: 0.95rem !important;
}

/* Booking Cards Font Sizes */
.booking-card {
    font-size: 0.9rem !important;
}
.booking-title {
    font-size: 0.92rem !important;
}
.booking-activity {
    font-size: 0.8rem !important;
}
.booking-lecturers {
    font-size: 0.82rem !important;
}
.dosen-avatar-badge {
    font-size: 0.8rem !important;
    width: 28px !important;
    height: 28px !important;
    line-height: 26px !important;
}

/* Detail Modal Font Sizes */
.detail-label {
    font-size: 0.9rem !important;
}
.detail-value {
    font-size: 1.05rem !important;
}

/* Forms & Inputs Font Sizes */
.form-group label {
    font-size: 0.95rem !important;
}
.form-group input, 
.form-group select, 
.form-group textarea,
.ts-control {
    font-size: 1rem !important;
}

/* Warning background and watermark for Lab Komputer A and B */
.cell-lab-komputer {
    background: rgba(245, 158, 11, 0.08) !important;
    position: relative;
}

.cell-lab-komputer::before {
    content: 'Digunakan untuk Praktikum';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-5deg);
    font-size: 0.72rem;
    font-weight: 700;
    color: rgba(245, 158, 11, 0.28);
    white-space: nowrap;
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

[data-theme="light"] .cell-lab-komputer {
    background: rgba(217, 119, 6, 0.06) !important;
}

[data-theme="light"] .cell-lab-komputer::before {
    color: rgba(217, 119, 6, 0.25);
}

/* Monthly View Circle Badges */
.calendar-day-events {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 0.25rem !important;
    margin-top: 0.35rem !important;
    overflow: visible !important;
    max-height: none !important;
}

.calendar-day-cell .calendar-event-badge {
    width: 22px !important;
    height: 22px !important;
    line-height: 20px !important;
    text-align: center;
    border-radius: 50% !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem !important;
    font-weight: 800 !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    border-left: none !important;
    flex-shrink: 0;
    box-sizing: border-box;
    overflow: visible !important;
    text-overflow: clip !important;
    white-space: nowrap !important;
    max-width: none !important;
}

[data-theme="light"] .calendar-day-cell .calendar-event-badge {
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
}