/* ConferenceDirector — Modern Admin Theme */

/* ===== Color System ===== */
:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #3730a3;
    --secondary: #0ea5e9;
    --secondary-light: #38bdf8;
    --sidebar-bg: #1e1b4b;
    --sidebar-hover: #312e81;
    --sidebar-text: #c7d2fe;
    --sidebar-active: #818cf8;
    --body-bg: #f8fafc;
    --card-border: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
}

/* ===== Base Typography ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, Helvetica, Arial, sans-serif;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--body-bg);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    color: var(--text-primary);
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

h5 {
    font-size: 0.95rem;
    font-weight: 600;
}

/* ===== Sidebar ===== */
.sidebar {
    width: 220px;
    min-width: 220px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 1rem 0.5rem;
    font-size: 0.82rem;
    transition: background-color 0.2s ease;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

.sidebar-brand {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
    padding: 0 0.5rem;
}

.sidebar-brand a {
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.sidebar-brand a:hover {
    color: var(--sidebar-active);
}

.sidebar-section {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(199, 210, 254, 0.5);
    padding: 0.35rem 0.75rem;
    margin-top: 0.5rem;
    margin-bottom: 0;
    cursor: pointer;
    user-select: none;
    transition: color 0.15s ease;
}

.sidebar-section:hover {
    color: rgba(199, 210, 254, 0.8);
}

.sidebar-section i {
    font-size: 0.6rem;
}

.sidebar .nav-link,
.sidebar-link {
    color: var(--sidebar-text);
    font-size: 0.82rem;
    padding: 0.35rem 0.75rem;
    border-radius: 0.375rem;
    border-left: 2px solid transparent;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.sidebar .nav-link.active,
.sidebar-link.active {
    background-color: rgba(129, 140, 248, 0.12);
    color: #fff;
    border-left-color: var(--sidebar-active);
    font-weight: 500;
}

.sidebar .nav-link i,
.sidebar-link i {
    font-size: 0.85rem;
    width: 1.1rem;
    text-align: center;
    opacity: 0.7;
}

.sidebar .nav-link:hover i,
.sidebar-link:hover i {
    opacity: 1;
}

.sidebar hr {
    border-color: rgba(255, 255, 255, 0.08);
    margin: 0.5rem 0.5rem;
}

.sidebar .event-name {
    color: var(--secondary-light);
    font-weight: 600;
}

/* ===== Main Content ===== */
.main-content {
    padding: 1.5rem;
    min-height: 100vh;
    flex-grow: 1;
    max-width: 100%;
    overflow-x: hidden;
}

/* ===== Cards ===== */
.card {
    border: 1px solid var(--card-border);
    border-radius: 0.5rem;
    box-shadow: none;
    background: #fff;
}

.card-header {
    background: none;
    border-bottom: 1px solid var(--card-border);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
}

.card-body {
    padding: 1rem;
}

.card-footer {
    background: none;
    border-top: 1px solid var(--card-border);
    padding: 0.75rem 1rem;
}

/* ===== Tables ===== */
.table {
    font-size: 0.85rem;
    margin-bottom: 0;
}

.table thead th {
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom-width: 1px;
    padding: 0.5rem 0.75rem;
    white-space: nowrap;
}

.table tbody td {
    padding: 0.5rem 0.75rem;
    vertical-align: middle;
    border-color: var(--card-border);
}

.table-hover tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.03);
}

/* ===== Buttons ===== */
.btn {
    font-size: 0.85rem;
    border-radius: 0.375rem;
    padding: 0.35rem 0.85rem;
    font-weight: 500;
    transition: all 0.15s ease;
}

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

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

.btn-primary:active,
.btn-primary:focus-visible {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

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

.btn-success {
    background-color: var(--success);
    border-color: var(--success);
}

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

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

.btn-sm {
    font-size: 0.78rem;
    padding: 0.25rem 0.6rem;
}

/* ===== Forms ===== */
.form-control,
.form-select {
    font-size: 0.85rem;
    padding: 0.4rem 0.65rem;
    border-radius: 0.375rem;
    border-color: var(--card-border);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.form-label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.input-group-text {
    font-size: 0.85rem;
    padding: 0.4rem 0.65rem;
    border-radius: 0.375rem;
    border-color: var(--card-border);
    background-color: var(--body-bg);
}

/* ===== Badges ===== */
.badge {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.25em 0.6em;
    border-radius: 9999px;
    letter-spacing: 0.01em;
}

.badge.bg-primary {
    background-color: rgba(79, 70, 229, 0.1) !important;
    color: var(--primary);
}

.badge.bg-success {
    background-color: rgba(16, 185, 129, 0.1) !important;
    color: var(--success);
}

.badge.bg-warning {
    background-color: rgba(245, 158, 11, 0.1) !important;
    color: #b45309;
}

.badge.bg-danger {
    background-color: rgba(239, 68, 68, 0.1) !important;
    color: var(--danger);
}

.badge.bg-secondary {
    background-color: rgba(100, 116, 139, 0.1) !important;
    color: var(--text-secondary);
}

.badge.bg-info {
    background-color: rgba(14, 165, 233, 0.1) !important;
    color: var(--secondary);
}

/* ===== Alerts ===== */
.alert {
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
    border-radius: 0.375rem;
    border: none;
    border-left: 3px solid;
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.08);
    border-left-color: var(--success);
    color: #065f46;
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.08);
    border-left-color: var(--warning);
    color: #92400e;
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.08);
    border-left-color: var(--danger);
    color: #991b1b;
}

.alert-info {
    background-color: rgba(14, 165, 233, 0.08);
    border-left-color: var(--secondary);
    color: #0c4a6e;
}

.alert-primary {
    background-color: rgba(79, 70, 229, 0.08);
    border-left-color: var(--primary);
    color: var(--primary-dark);
}

/* ===== Pagination ===== */
.page-link {
    font-size: 0.82rem;
    padding: 0.3rem 0.65rem;
    color: var(--primary);
    border-color: var(--card-border);
}

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

/* ===== Breadcrumbs ===== */
.breadcrumb {
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.breadcrumb-item a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--text-secondary);
}

/* ===== Dropdowns ===== */
.dropdown-menu {
    font-size: 0.85rem;
    border: 1px solid var(--card-border);
    border-radius: 0.375rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 0.25rem;
}

.dropdown-item {
    font-size: 0.84rem;
    padding: 0.35rem 0.75rem;
    border-radius: 0.25rem;
}

.dropdown-item:hover {
    background-color: rgba(79, 70, 229, 0.06);
}

/* ===== Modal ===== */
.modal-header {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--card-border);
}

.modal-title {
    font-size: 1rem;
    font-weight: 600;
}

.modal-body {
    padding: 1rem;
}

.modal-footer {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--card-border);
}

.modal-content {
    border: 1px solid var(--card-border);
    border-radius: 0.5rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

/* ===== Nav Tabs / Pills ===== */
.nav-tabs .nav-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.5rem 1rem;
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 500;
    background: none;
}

.nav-tabs .nav-link:hover:not(.active) {
    border-bottom-color: var(--card-border);
    color: var(--text-primary);
}

.nav-pills .nav-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-radius: 0.375rem;
    padding: 0.4rem 0.85rem;
}

.nav-pills .nav-link.active {
    background-color: var(--primary);
}

/* ===== Utilities ===== */
.text-muted {
    color: var(--text-secondary) !important;
}

a {
    color: var(--primary);
}

a:hover {
    color: var(--primary-dark);
}

/* Compact stat cards on dashboard */
.stat-card {
    border: 1px solid var(--card-border);
    border-radius: 0.5rem;
    padding: 1rem;
    background: #fff;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Scrollbar for tables in cards */
.table-responsive::-webkit-scrollbar {
    height: 4px;
}

.table-responsive::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
}

/* Transitions */
.sidebar .nav-link,
.btn,
.form-control,
.form-select,
.card {
    transition: all 0.15s ease;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.25);
}