/* ========== CSS Variables & Reset ========== */
:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --success: #22c55e;
    --success-bg: #dcfce7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --info: #3b82f6;
    --info-bg: #dbeafe;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 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);
    --shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
    --transition: all .2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-hover); }

/* ========== Login Page ========== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4338ca 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(99,102,241,.15);
    top: -150px;
    right: -100px;
    z-index: 0;
}

.login-wrapper::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(139,92,246,.12);
    bottom: -120px;
    left: -80px;
    z-index: 0;
}

.login-card {
    background: rgba(255,255,255,.97);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,.2), 0 0 0 1px rgba(255,255,255,.1);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    animation: fadeUp .5s ease;
    position: relative;
    z-index: 1;
}

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

.logo-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #fff;
    box-shadow: 0 8px 24px rgba(99,102,241,.35);
}

.login-card .logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
    letter-spacing: .5px;
}

.captcha-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.captcha-row .form-control {
    flex: 1;
}

.captcha-img {
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--gray-200);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.captcha-img:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.login-card .logo p {
    color: var(--gray-400);
    font-size: 14px;
}

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

.sidebar {
    width: 240px;
    background: linear-gradient(180deg, #1e1b4b 0%, #312e81 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 22px 20px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo svg {
    color: rgba(255,255,255,.85);
    flex-shrink: 0;
}

.sidebar-logo h2 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .5px;
    background: linear-gradient(135deg, #c7d2fe, #e0e7ff, #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-contact {
    padding: 14px 20px;
    font-size: 11px;
    color: rgba(255,255,255,.3);
    border-top: 1px solid rgba(255,255,255,.06);
    text-align: center;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,.7);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,.1);
    color: #fff;
}

.sidebar-nav a.active {
    background: rgba(255,255,255,.15);
    color: #fff;
}

.sidebar-nav a svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid rgba(255,255,255,.1);
}

.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar h1 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-600);
}

.topbar-user .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

.page-body {
    flex: 1;
    padding: 32px;
}

/* ========== Cards ========== */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: 24px;
}

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

.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

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

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

.stat-icon.purple { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: var(--success-bg); color: var(--success); }
.stat-icon.amber { background: var(--warning-bg); color: var(--warning); }
.stat-icon.blue { background: var(--info-bg); color: var(--info); }

.stat-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
}

.stat-info p {
    font-size: 13px;
    color: var(--gray-500);
}

/* ========== Table ========== */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: .5px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

table td {
    padding: 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
}

table tr:hover td {
    background: var(--gray-50);
}

table .thumb {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}

table .no-image {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 12px;
}

/* ========== Badges ========== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.badge-on {
    background: var(--success-bg);
    color: #16a34a;
}

.badge-off {
    background: var(--gray-100);
    color: var(--gray-500);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}

.badge-on .badge-dot { background: #22c55e; }
.badge-off .badge-dot { background: var(--gray-400); }

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-hover);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99,102,241,.35);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}
.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-danger {
    background: var(--danger-bg);
    color: var(--danger);
}
.btn-danger:hover {
    background: #fca5a5;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-icon {
    padding: 8px;
    border-radius: var(--radius-sm);
}

.actions {
    display: flex;
    gap: 8px;
}

/* ========== Forms ========== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-800);
    background: #fff;
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-hint {
    font-size: 12px;
    color: var(--gray-400);
    margin-top: 4px;
}

/* Toggle Switch */
.switch-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.switch {
    position: relative;
    width: 48px;
    height: 26px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.switch-slider {
    position: absolute;
    inset: 0;
    background: var(--gray-300);
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.switch-slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,.15);
}

.switch input:checked + .switch-slider {
    background: var(--primary);
}

.switch input:checked + .switch-slider::before {
    transform: translateX(22px);
}

.switch-label {
    font-size: 14px;
    color: var(--gray-600);
}

/* File upload */
.upload-area {
    border: 2px dashed var(--gray-200);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--gray-50);
}

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

.upload-area svg {
    width: 40px;
    height: 40px;
    color: var(--gray-400);
    margin-bottom: 8px;
}

.upload-area p {
    font-size: 14px;
    color: var(--gray-500);
}

.upload-area .upload-hint {
    font-size: 12px;
    color: var(--gray-400);
    margin-top: 4px;
}

.preview-image {
    max-width: 320px;
    max-height: 200px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    margin-top: 12px;
}

/* ========== Flash Messages ========== */
.flash-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.flash {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    animation: slideIn .3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 280px;
}

.flash-success {
    background: var(--success-bg);
    color: #16a34a;
    border-left: 4px solid var(--success);
}

.flash-error {
    background: var(--danger-bg);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-400);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: .5;
}

.empty-state h3 {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
    margin-bottom: 20px;
}

/* ========== User Dropdown ========== */
.user-dropdown {
    position: relative;
}

.user-dropdown .topbar-user {
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.user-dropdown .topbar-user:hover {
    background: var(--gray-50);
}

.dropdown-arrow {
    transition: transform .2s ease;
    color: var(--gray-400);
    margin-left: 2px;
}

.user-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 160px;
    background: #fff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all .15s ease;
    z-index: 200;
}

.user-dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--gray-700);
    transition: var(--transition);
    text-decoration: none;
}

.dropdown-item:hover {
    background: var(--gray-50);
    color: var(--danger);
}

/* ========== Role Badge (topbar) ========== */
.role-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 4px;
}

.role-badge.role-admin {
    background: var(--primary-light);
    color: var(--primary);
}

.role-badge.role-user {
    background: var(--gray-100);
    color: var(--gray-500);
}

/* ========== User Badges (table) ========== */
.badge-admin {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-user {
    background: var(--gray-100);
    color: var(--gray-500);
}

/* ========== Filter & Card Header Actions ========== */
.card-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.filter-select-wrapper {
    position: relative;
}

.filter-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 7px 32px 7px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--gray-700);
    background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 10px center;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    min-width: 140px;
}

.filter-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

/* ========== Owner Tag ========== */
.owner-tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    background: var(--info-bg);
    color: var(--info);
}

/* ========== Avatar Small ========== */
.avatar-sm {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

/* ========== Animations ========== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .sidebar {
        width: 0;
        overflow: hidden;
    }
    .sidebar.open {
        width: 240px;
    }
    .main-content {
        margin-left: 0;
    }
    .page-body {
        padding: 20px;
    }
    .topbar {
        padding: 16px 20px;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
}