:root {
    /* Colors - Indigo/Slate Palette */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-soft: rgba(99, 102, 241, 0.1);

    --bg-app: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;

    --text-main: #1e293b;
    --text-sub: #64748b;
    --text-on-dark: #f8fafc;

    --border: #e2e8f0;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --sidebar-width: 260px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

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

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-app) !important;
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: var(--text-on-dark);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.logo {
    padding: 0 24px 32px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 28px;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.5));
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    flex: 1;
    padding: 0 12px;
    display: flex;
    flex-direction: column;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: #94a3b8;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #f8fafc;
}

.nav-item.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.sidebar-footer {
    padding: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-logout {
    width: 100%;
    padding: 10px;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-logout:hover {
    background: #ef4444;
    color: white;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 40px 48px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.content-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

/* Tables */
.table-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-top: 24px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

th {
    background: #f8fafc;
    padding: 16px 24px;
    text-align: left;
    font-weight: 600;
    color: var(--text-sub);
    border-bottom: 1px solid var(--border);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: #fcfdfe;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-primary {
    background: var(--primary-soft);
    color: var(--primary);
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.id-badge {
    background: #f1f5f9;
    color: #475569;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-action {
    padding: 6px;
    background: transparent;
    border: none;
    color: var(--text-sub);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-action:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--primary);
    outline: none;
}

/* Tab Bar */
.tab-btn {
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-sub);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.badge-deleted {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
}

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

.badge-admin {
    background: rgba(99,102,241,0.12);
    color: var(--primary);
}

/* Status Indicator */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-online {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* Popup */
.popup {
    position: absolute;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    width: 220px;
    overflow: hidden;
    animation: popIn 0.2s cubic-bezier(0, 0, 0.2, 1);
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.popup button {
    width: 100%;
    text-align: left;
    padding: 12px 16px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    transition: background 0.2s;
}

.popup button:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.popup button.danger {
    color: var(--danger);
}

.popup button.danger:hover {
    background: #fee2e2;
}

/* Toast */
#toast-container {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 9999;
}

.toast {
    background: white;
    color: var(--text-main);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
    margin-top: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s forwards;
}

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

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Utilities */
.hidden {
    display: none !important;
}

.text-xs {
    font-size: 0.75rem;
}

.text-sm {
    font-size: 0.875rem;
}

.text-bold {
    font-weight: 600;
}

.text-muted {
    color: var(--text-sub);
}

/* Search Bar (Specific to Index) */
.search-bar {
    margin-bottom: 24px;
}

.search-input-wrapper {
    position: relative;
    max-width: 400px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.5;
}

.search-input-wrapper input {
    padding-left: 40px;
}