html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html, body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}

/* ── Sidebar ── */
.sidebar {
    width: 260px;
    min-width: 260px;
    background: #1a1d23;
    color: #c2c7d0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1040;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 1.25rem 1.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-brand h4 {
    margin: 0;
    font-weight: 700;
    color: #fff;
    font-size: 1.2rem;
}

.sidebar-brand .brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
}

.sidebar-company {
    padding: 0.75rem 1.25rem;
    font-size: 0.8rem;
    color: #8b8fa3;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0;
}

.sidebar-nav .nav-section {
    padding: 0.5rem 1.25rem 0.25rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6c757d;
    font-weight: 600;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.25rem;
    color: #a0a4b8;
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}

.sidebar-nav .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.05);
}

.sidebar-nav .nav-link.active {
    color: #fff;
    background: rgba(99, 102, 241, 0.15);
    border-left-color: #6366f1;
}

.sidebar-nav .nav-link i {
    font-size: 1.1rem;
    width: 22px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 0.8rem;
}

/* ── Main Content ── */
.main-wrapper {
    display: flex;
    height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.topbar {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
    flex-shrink: 0;
}

.topbar h5 {
    margin: 0;
    font-weight: 600;
    color: #1a1d23;
}

.topbar .user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.topbar .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    background: #f3f4f6;
}

/* ── Cards ── */
.stat-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.stat-card .card-body {
    padding: 1.25rem;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

/* ── Auth Layout ── */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1d23 0%, #2d3748 100%);
    overflow: auto;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    border: none;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.auth-card .card-body {
    padding: 2.5rem;
}

.auth-brand {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-brand .brand-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: #fff;
    margin: 0 auto 1rem;
}

.auth-brand h3 {
    font-weight: 700;
    color: #1a1d23;
}

/* ── Message Feed (Dashboard) ── */
.message-item {
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    background: #fff;
    border: 1px solid #e5e7eb;
}

.message-item.incoming {
    border-left: 3px solid #22c55e;
}

.message-item.outgoing {
    border-left: 3px solid #6366f1;
}

/* ── Mobile Responsive ── */
.sidebar-toggle {
    display: none;
}

@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .sidebar-toggle {
        display: block;
    }
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 1035;
    }
    .sidebar-overlay.show {
        display: block;
    }
}

/* ── Toast ── */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1090;
}

.toast {
    min-width: 300px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ── DataTables ── */
.dataTables_wrapper .dataTables_filter input {
    border-radius: 8px;
    padding: 0.4rem 0.8rem;
    border: 1px solid #dee2e6;
}

.dataTables_wrapper .dataTables_length select {
    border-radius: 8px;
}

.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate {
    font-size: 0.85rem;
}

/* ── Spinner ── */
.spinner-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: inherit;
}

/* ── Dropdown user menu ── */
.topbar .dropdown-toggle::after {
    display: none;
}

.topbar .dropdown-menu {
    min-width: 200px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.12);
    border: 1px solid #e5e7eb;
}

/* ── Card hover effect ── */
.card {
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* ── Badge styles ── */
.badge {
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* ── Table improvements ── */
.table th {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #6b7280;
}

.table td {
    vertical-align: middle;
}