/* =========================================
   MediBook - Medical Appointment System
   Core Stylesheet
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    /* Brand Colors */
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #EBF2FF;
    --primary-glow: rgba(0, 102, 255, 0.15);

    --secondary: #00C896;
    --secondary-light: #E6FAF5;

    --danger: #FF4757;
    --danger-light: #FFF0F1;
    --warning: #FF9F43;
    --warning-light: #FFF5EC;
    --success: #20BF6B;
    --success-light: #EAFAF1;
    --info: #45AAF2;
    --info-light: #EEF8FF;

    /* Neutrals */
    --bg: #F0F4FA;
    --surface: #FFFFFF;
    --border: #E4EAF2;
    --border-hover: #CBD5E8;

    --text-primary: #0D1B2A;
    --text-secondary: #4A5568;
    --text-muted: #8896A9;
    --text-light: #B0BEC5;

    /* Sidebar */
    --sidebar-bg: #0D1B2A;
    --sidebar-hover: rgba(255,255,255,0.07);
    --sidebar-active: rgba(0, 102, 255, 0.2);
    --sidebar-text: rgba(255,255,255,0.65);
    --sidebar-text-active: #FFFFFF;
    --sidebar-icon: rgba(255,255,255,0.45);
    --sidebar-width: 260px;

    /* Spacing & Radius */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadow */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-primary: 0 4px 20px rgba(0, 102, 255, 0.25);

    /* Transitions */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================
   Reset & Base
   ========================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; }

/* =========================================
   Layout
   ========================================= */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: var(--transition);
}

.content-area {
    flex: 1;
    padding: 28px 32px;
}

/* =========================================
   Sidebar
   ========================================= */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

.sidebar-brand {
    padding: 24px 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.brand-icon {
    width: 40px; height: 40px;
    background: var(--primary);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
    box-shadow: var(--shadow-primary);
}

.brand-text h2 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.3px;
    line-height: 1;
}

.brand-text span {
    font-size: 0.7rem;
    color: var(--sidebar-icon);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.sidebar-user {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    flex-shrink: 0;
}

.user-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    text-transform: uppercase;
}

.user-info .user-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--sidebar-text-active);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-info .user-role {
    font-size: 0.7rem;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.nav-section-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--sidebar-icon);
    padding: 12px 20px 6px;
    display: block;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--sidebar-text);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 0;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.nav-item:hover {
    color: var(--sidebar-text-active);
    background: var(--sidebar-hover);
}

.nav-item.active {
    color: var(--sidebar-text-active);
    background: var(--sidebar-active);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

.nav-item .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    color: var(--sidebar-icon);
    flex-shrink: 0;
    transition: var(--transition);
}

.nav-item:hover .nav-icon,
.nav-item.active .nav-icon { color: var(--primary); }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.07);
    flex-shrink: 0;
}

.sidebar-footer a.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--sidebar-text);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.sidebar-footer a.logout-btn:hover {
    background: rgba(255, 71, 87, 0.15);
    color: var(--danger);
}

/* =========================================
   Top Bar
   ========================================= */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-left h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.topbar-left p {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-clinic-badge {
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 20px;
}

/* =========================================
   Cards & Stats
   ========================================= */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--border-hover);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 80px; height: 80px;
    border-radius: 50%;
    opacity: 0.08;
    transform: translate(20px, -20px);
}

.stat-card.blue::before { background: var(--primary); }
.stat-card.green::before { background: var(--secondary); }
.stat-card.orange::before { background: var(--warning); }
.stat-card.red::before { background: var(--danger); }

.stat-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 14px;
}

.stat-icon {
    width: 44px; height: 44px;
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
}

.stat-card.blue .stat-icon { background: var(--primary-light); color: var(--primary); }
.stat-card.green .stat-icon { background: var(--secondary-light); color: var(--secondary); }
.stat-card.orange .stat-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.red .stat-icon { background: var(--danger-light); color: var(--danger); }

.stat-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
}

.stat-badge.up { background: var(--success-light); color: var(--success); }
.stat-badge.down { background: var(--danger-light); color: var(--danger); }

.stat-value {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 4px;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* =========================================
   Data Cards / Panels
   ========================================= */
.panel {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
}

.panel-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-title .title-icon {
    width: 28px; height: 28px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem;
}

.panel-body { padding: 24px; }

/* =========================================
   Tables
   ========================================= */
.table-responsive { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table thead th {
    background: #F8FAFC;
    padding: 12px 16px;
    text-align: left;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.data-table tbody tr:last-child { border-bottom: none; }
.data-table tbody tr:hover { background: #F8FAFD; }

.data-table tbody td {
    padding: 14px 16px;
    color: var(--text-secondary);
    vertical-align: middle;
}

.data-table tbody td .td-main {
    font-weight: 600;
    color: var(--text-primary);
}

.data-table tbody td .td-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Avatar in table */
.table-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    flex-shrink: 0;
}

.table-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* =========================================
   Badges & Status
   ========================================= */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; }

.badge-pending   { background: var(--warning-light); color: var(--warning); }
.badge-pending::before { background: var(--warning); }

.badge-confirmed { background: var(--info-light); color: var(--info); }
.badge-confirmed::before { background: var(--info); }

.badge-completed { background: var(--success-light); color: var(--success); }
.badge-completed::before { background: var(--success); }

.badge-cancelled { background: var(--danger-light); color: var(--danger); }
.badge-cancelled::before { background: var(--danger); }

.badge-active { background: var(--success-light); color: var(--success); }
.badge-active::before { background: var(--success); }

.badge-inactive { background: #F1F5F9; color: var(--text-muted); }
.badge-inactive::before { background: var(--text-light); }

/* =========================================
   Buttons
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: 0.1px;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(0,102,255,0.3);
}
.btn-primary:hover { background: var(--primary-dark); color: white; box-shadow: var(--shadow-primary); }

.btn-success {
    background: var(--secondary);
    color: white;
    box-shadow: 0 2px 8px rgba(0,200,150,0.3);
}
.btn-success:hover { background: #00a87e; color: white; }

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 2px 8px rgba(255,71,87,0.25);
}
.btn-danger:hover { background: #e63946; color: white; }

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

.btn-sm { padding: 6px 12px; font-size: 0.77rem; }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }
.btn-icon.btn-sm { padding: 6px; }

/* =========================================
   Forms
   ========================================= */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.form-full { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.2px;
}

.form-label .required { color: var(--danger); margin-left: 2px; }

.form-control {
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-primary);
    background: var(--surface);
    transition: var(--transition);
    font-family: inherit;
    outline: none;
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-control::placeholder { color: var(--text-light); }

select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 90px; }

/* =========================================
   Modal
   ========================================= */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(13,27,42,0.5);
    backdrop-filter: blur(4px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.show { display: flex; }

.modal {
    background: var(--surface);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlide 0.2s ease;
}

.modal-lg { max-width: 720px; }

@keyframes modalSlide {
    from { opacity: 0; transform: translateY(-20px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    padding: 24px 28px 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.modal-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.2px;
}

.modal-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 3px;
}

.modal-close {
    width: 30px; height: 30px;
    border-radius: 8px;
    background: var(--bg);
    border: none;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    color: var(--text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}

.modal-close:hover { background: var(--danger-light); color: var(--danger); }

.modal-body { padding: 20px 28px 28px; }

.modal-footer {
    padding: 0 28px 24px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* =========================================
   Alerts / Flash
   ========================================= */
.alert {
    padding: 12px 18px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success { background: var(--success-light); color: #1a9154; border-color: #b7efd2; }
.alert-danger  { background: var(--danger-light);  color: var(--danger); border-color: #ffd6da; }
.alert-warning { background: var(--warning-light); color: #b87d28; border-color: #ffe5c8; }
.alert-info    { background: var(--info-light);    color: #2484c5; border-color: #c5e5fa; }

/* =========================================
   Empty State
   ========================================= */
.empty-state {
    text-align: center;
    padding: 56px 24px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3.5rem;
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.empty-state p { font-size: 0.85rem; }

/* =========================================
   Filters & Search
   ========================================= */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
    min-width: 220px;
}

.search-input-wrapper .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.search-input-wrapper .form-control { padding-left: 36px; }

/* =========================================
   Login Page
   ========================================= */
.login-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #0D1B2A 0%, #1a3a5c 50%, #0D1B2A 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(0,102,255,0.15) 0%, transparent 70%);
    top: -150px; right: -150px;
    pointer-events: none;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(0,200,150,0.1) 0%, transparent 70%);
    bottom: -100px; left: -100px;
    pointer-events: none;
}

.login-card {
    background: rgba(255,255,255,0.97);
    border-radius: var(--radius-xl);
    padding: 48px 44px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.3);
    position: relative;
    z-index: 1;
}

.login-header { text-align: center; margin-bottom: 36px; }

.login-logo {
    width: 60px; height: 60px;
    background: var(--primary);
    border-radius: 18px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 16px;
    box-shadow: var(--shadow-primary);
}

.login-header h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: 6px;
}

.login-header p { color: var(--text-muted); font-size: 0.88rem; }

.login-btn {
    width: 100%;
    padding: 13px;
    font-size: 0.92rem;
    border-radius: var(--radius);
    margin-top: 8px;
    justify-content: center;
}

/* =========================================
   Clinic Cards (Super Admin)
   ========================================= */
.clinic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.clinic-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 22px;
    transition: var(--transition);
    cursor: pointer;
}

.clinic-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.clinic-card-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 16px;
}

.clinic-avatar {
    width: 48px; height: 48px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.clinic-info h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 3px;
}

.clinic-info p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.clinic-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    margin-top: 14px;
}

.clinic-stat { text-align: center; }
.clinic-stat-val {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
}
.clinic-stat-lbl { font-size: 0.68rem; color: var(--text-muted); font-weight: 500; }

/* =========================================
   Schedule Grid
   ========================================= */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
}

.schedule-day {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 14px 10px;
    text-align: center;
    border: 1.5px solid var(--border);
    transition: var(--transition);
}

.schedule-day.has-schedule {
    background: var(--primary-light);
    border-color: var(--primary);
}

.schedule-day .day-name {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.schedule-day.has-schedule .day-name { color: var(--primary); }

.schedule-day .day-time {
    font-size: 0.72rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* =========================================
   Pagination
   ========================================= */
.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: center;
    padding-top: 20px;
}

.page-btn {
    width: 34px; height: 34px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.page-btn:hover { border-color: var(--primary); color: var(--primary); }
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.page-btn.disabled { opacity: 0.4; pointer-events: none; }

/* =========================================
   Utilities
   ========================================= */
.d-flex   { display: flex; }
.d-grid   { display: grid; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.mb-0 { margin-bottom: 0 !important; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.mb-28 { margin-bottom: 28px; }
.mt-16 { margin-top: 16px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted) !important; }
.text-primary-color { color: var(--primary) !important; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-sm { font-size: 0.8rem; }
.w-100 { width: 100%; }

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .schedule-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
    :root { --sidebar-width: 0px; }
    .sidebar { transform: translateX(-260px); width: 260px; }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .content-area { padding: 16px; }
    .topbar { padding: 0 16px; }
    .stats-grid { grid-template-columns: 1fr; }
    .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
    .schedule-grid { grid-template-columns: repeat(2, 1fr); }
}

/* =========================================
   Print
   ========================================= */
@media print {
    .sidebar, .topbar, .btn, .modal-overlay { display: none !important; }
    .main-content { margin-left: 0; }
}