:root {
    --sidebar-width: 250px;
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --success: #059669;
    --success-light: #ecfdf5;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --warning: #d97706;
    --warning-light: #fffbeb;
    --info: #0891b2;
    --info-light: #ecfeff;
    --sidebar-bg: #1e1b4b;
    --sidebar-hover: #312e81;
    --sidebar-active: #4f46e5;
    --sidebar-text: #c7d2fe;
    --sidebar-text-active: #ffffff;
    --body-bg: #f1f5f9;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --radius: 8px;
    --radius-lg: 12px;
    --bg-secondary: #f8fafc;
    --border: #e2e8f0;
    --muted: #94a3b8;
}

* { box-sizing: border-box; }

html {
    font-size: 14px;
    height: 100%;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--body-bg);
    color: var(--text-primary);
    margin: 0;
    min-height: 100vh;
    display: flex;
}

/* ── Sidebar ────────────────────────────── */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    min-height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: transform .25s ease;
}

.sidebar-brand {
    padding: 20px 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-brand a {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand .brand-icon {
    width: 34px;
    height: 34px;
    background: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

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

.sidebar-section {
    padding: 0 12px;
    margin-bottom: 8px;
}

.sidebar-section-title {
    font-size: .65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: rgba(255,255,255,.35);
    padding: 12px 12px 6px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 6px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    transition: all .15s ease;
    margin-bottom: 2px;
}

.sidebar-link:hover {
    background: var(--sidebar-hover);
    color: #fff;
}

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

.sidebar-link .icon {
    width: 20px;
    text-align: center;
    font-size: .9rem;
    opacity: .7;
}

.sidebar-link.active .icon { opacity: 1; }

.sidebar-user {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,.08);
}

.sidebar-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.sidebar-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: .8rem;
}

.sidebar-user-name {
    color: #fff;
    font-size: .85rem;
    font-weight: 600;
}

.sidebar-user-role {
    color: var(--sidebar-text);
    font-size: .7rem;
}

.sidebar-user-actions {
    display: flex;
    gap: 6px;
}

.sidebar-user-actions .btn {
    flex: 1;
    font-size: .75rem;
    padding: 4px 8px;
}

/* ── Main Content ────────────────────────── */
.app-main {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-topbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0 28px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1020;
    box-shadow: var(--shadow-sm);
}

.topbar-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.app-content {
    flex: 1;
    padding: 24px 28px;
}

/* ── Mobile Toggle ───────────────────────── */
.sidebar-toggle {
    display: none;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 1.1rem;
    cursor: pointer;
}

@media (max-width: 991px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    .app-sidebar.show {
        transform: translateX(0);
        box-shadow: 4px 0 24px rgba(0,0,0,.3);
    }
    .app-main {
        margin-left: 0;
    }
    .sidebar-toggle {
        display: inline-flex;
    }
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,.4);
        z-index: 1035;
        display: none;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

/* ── Cards ────────────────────────────────── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 14px 20px;
    font-weight: 600;
    font-size: .9rem;
}

.card-body { padding: 20px; }

/* Stat cards */
.stat-card {
    border-radius: var(--radius-lg);
    padding: 20px;
    border: none;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    opacity: .1;
    background: currentColor;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.1;
}

.stat-card .stat-label {
    font-size: .8rem;
    font-weight: 500;
    opacity: .85;
    margin-bottom: 4px;
}

.stat-primary { background: var(--primary); color: #fff; }
.stat-success { background: var(--success); color: #fff; }
.stat-info { background: var(--info); color: #fff; }
.stat-danger { background: var(--danger); color: #fff; }

/* ── Buttons ──────────────────────────────── */
.btn {
    border-radius: 6px;
    font-weight: 500;
    font-size: .85rem;
    padding: 7px 16px;
    transition: all .15s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #047857; }

.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); border-color: var(--warning); color: #fff; }

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
    background: transparent;
}
.btn-outline-primary:hover {
    background: var(--primary);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
    background: transparent;
}

.btn-light {
    background: var(--body-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-sm { padding: 4px 10px; font-size: .8rem; }
.btn-lg { padding: 10px 24px; font-size: .95rem; }

/* ── Tables ───────────────────────────────── */
.table {
    margin-bottom: 0;
    font-size: .875rem;
}

.table thead th {
    background: var(--body-bg);
    font-weight: 600;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 10px 14px;
    white-space: nowrap;
}

.table td {
    padding: 10px 14px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table tbody tr:hover {
    background: rgba(79, 70, 229, .03);
}

.table-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

/* ── Badges ───────────────────────────────── */
.badge {
    font-weight: 500;
    font-size: .75rem;
    padding: 4px 10px;
    border-radius: 20px;
}

.badge-success, .badge.bg-success {
    background: var(--success-light) !important;
    color: var(--success) !important;
}

.badge-danger, .badge.bg-danger {
    background: var(--danger-light) !important;
    color: var(--danger) !important;
}

.badge-warning, .badge.bg-warning {
    background: var(--warning-light) !important;
    color: var(--warning) !important;
}

.badge-secondary, .badge.bg-secondary {
    background: #f1f5f9 !important;
    color: var(--text-secondary) !important;
}

.badge-primary, .badge.bg-primary {
    background: var(--primary-light) !important;
    color: var(--primary) !important;
}

.badge-info, .badge.bg-info {
    background: var(--info-light) !important;
    color: var(--info) !important;
}

/* ── Forms ─────────────────────────────────── */
.form-control, .form-select {
    border-radius: 6px;
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    font-size: .875rem;
    transition: border-color .15s ease, box-shadow .15s ease;
    background: var(--card-bg);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, .1);
}

.form-label {
    font-weight: 600;
    font-size: .8rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.form-text {
    font-size: .75rem;
    color: var(--text-muted);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* ── Alerts ───────────────────────────────── */
.alert {
    border-radius: var(--radius);
    border: none;
    font-size: .875rem;
    padding: 12px 16px;
}

.alert-success {
    background: var(--success-light);
    color: var(--success);
    border-left: 4px solid var(--success);
}

.alert-danger {
    background: var(--danger-light);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: var(--warning-light);
    color: var(--warning);
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: var(--info-light);
    color: var(--info);
    border-left: 4px solid var(--info);
}

/* ── Progress bars ────────────────────────── */
.progress {
    height: 8px;
    border-radius: 4px;
    background: var(--body-bg);
    overflow: hidden;
}

.progress-bar {
    border-radius: 4px;
    font-size: .65rem;
    transition: width .4s ease;
}

.progress-lg { height: 22px; border-radius: 6px; }
.progress-lg .progress-bar { font-size: .75rem; line-height: 22px; }

/* ── Page Header ──────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.page-header h3,
.page-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.page-header .text-muted {
    font-size: .85rem;
    font-weight: 400;
    color: var(--text-muted) !important;
}

/* ── Tabs ─────────────────────────────────── */
.nav-tabs {
    border-bottom: 2px solid var(--border-color);
}

.nav-tabs .nav-link {
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: .875rem;
    padding: 10px 16px;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all .15s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    border-bottom-color: rgba(79, 70, 229, .3);
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: transparent;
}

/* ── Pagination ───────────────────────────── */
.pagination .page-link {
    border-radius: 6px;
    margin: 0 2px;
    font-size: .8rem;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
}

.pagination .page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
}

/* ── Login Page ───────────────────────────── */
.login-page {
    min-height: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4f46e5 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
    padding: 40px;
}

.login-card .login-logo {
    text-align: center;
    margin-bottom: 28px;
}

.login-card .login-logo .logo-icon {
    width: 56px;
    height: 56px;
    background: var(--primary);
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.login-card .login-logo h3 {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--text-primary);
    margin: 0;
}

.login-card .login-logo p {
    color: var(--text-muted);
    font-size: .85rem;
    margin: 4px 0 0;
}

/* ── Dropdown menu polish ─────────────────── */
.dropdown-menu {
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    padding: 6px;
}

.dropdown-item {
    border-radius: 4px;
    font-size: .85rem;
    padding: 7px 12px;
}

.dropdown-item:hover { background: var(--primary-light); color: var(--primary); }

/* ── Quill Editor ─────────────────────────── */
.ql-toolbar.ql-snow {
    border-radius: var(--radius) var(--radius) 0 0;
    border-color: var(--border-color);
}

.ql-container.ql-snow {
    border-radius: 0 0 var(--radius) var(--radius);
    border-color: var(--border-color);
    min-height: 250px;
    font-size: .9rem;
}

/* ── Utilities ────────────────────────────── */
.gap-2 { gap: .5rem; }
.gap-3 { gap: .75rem; }
.fw-600 { font-weight: 600; }
.text-xs { font-size: .75rem; }

/* ── Scrollbar ────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }