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

:root {
    --bg: #0f1117;
    --bg-surface: #1a1d27;
    --bg-hover: #21253a;
    --border: #2d3148;
    --text: #e2e8f0;
    --text-muted: #64748b;
    --text-secondary: #94a3b8;
    --accent: #7c8cf8;
    --accent-hover: #6471e8;
    --danger: #f87171;
    --danger-bg: #2d1515;
    --success: #4ade80;
    --success-bg: #052e16;
    --warning: #f59e0b;
    --sidebar-width: 240px;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 0.9rem;
}

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

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
}

.sidebar-brand {
    padding: 1.5rem 1.2rem;
    border-bottom: 1px solid var(--border);
}

    .sidebar-brand a {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        text-decoration: none;
        color: var(--text);
    }

.brand-icon {
    font-size: 1.3rem;
    color: var(--accent);
}

.brand-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.02em;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.nav-section {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0 0.5rem;
    margin-bottom: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
    font-size: 0.875rem;
}

    .nav-item:hover {
        background: var(--bg-hover);
        color: var(--text);
    }

    .nav-item.active {
        background: var(--bg-hover);
        color: var(--accent);
    }

.nav-icon {
    font-size: 1rem;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.nav-item-danger {
    color: var(--danger);
}

    .nav-item-danger:hover {
        background: var(--danger-bg);
        color: var(--danger);
    }

.sidebar-footer {
    padding: 0.75rem;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

/* ===== CONTENT ===== */
.content-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
}

.content {
    padding: 2rem;
    max-width: 1200px;
}

/* ===== AUTH PAGES ===== */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--bg);
}

.auth-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
}

    .auth-card h1 {
        font-size: 1.8rem;
        color: var(--accent);
        margin-bottom: 0.5rem;
    }

.auth-subtitle {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

/* ===== FORMS ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.2rem;
}

    .form-group label {
        font-size: 0.8rem;
        color: var(--text-secondary);
    }

    .form-group input {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: 0.6rem 0.9rem;
        color: var(--text);
        font-size: 0.9rem;
        transition: border-color 0.2s;
    }

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

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

    .form-check label {
        font-size: 0.85rem;
        color: var(--text-secondary);
    }

/* ===== BUTTONS ===== */
.btn-primary {
    padding: 0.6rem 1.2rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    text-decoration: none;
    display: inline-block;
}

    .btn-primary:hover {
        background: var(--accent-hover);
    }

    .btn-primary:disabled, .btn-disable {
        background: var(--border);
        cursor: not-allowed;
        color: var(--text-muted);
        border: none;
        border-radius: 8px;
        padding: 0.6rem 1.2rem;
        font-size: 0.875rem;
    }

.btn-danger {
    padding: 0.6rem 1.2rem;
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

    .btn-danger:hover {
        background: #3d1515;
    }

/* ===== CARDS ===== */
.page-header {
    margin-bottom: 1.5rem;
}

    .page-header h2 {
        font-size: 1.3rem;
        font-weight: 600;
        color: var(--text);
    }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
}

.card-full {
    grid-column: 1 / -1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.card-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.card-subtitle {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ===== DISK BAR ===== */
.disk-bar-track {
    background: var(--bg);
    border-radius: 999px;
    height: 6px;
    overflow: hidden;
    margin-bottom: 0.6rem;
}

.disk-bar-fill {
    height: 100%;
    border-radius: 999px;
    background: var(--accent);
    transition: width 0.3s ease;
}

    .disk-bar-fill.warning {
        background: var(--warning);
    }

    .disk-bar-fill.danger {
        background: var(--danger);
    }

.disk-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ===== BADGES ===== */
.badge {
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-weight: 500;
}

.badge-ok {
    background: var(--success-bg);
    color: var(--success);
}

.badge-error {
    background: var(--danger-bg);
    color: var(--danger);
}

/* ===== TABLES ===== */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

    .table th {
        text-align: left;
        color: var(--text-muted);
        font-weight: 500;
        padding: 0.5rem 0.75rem;
        border-bottom: 1px solid var(--border);
    }

    .table td {
        padding: 0.6rem 0.75rem;
        border-bottom: 1px solid var(--bg);
        color: var(--text-secondary);
    }

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

    .table td:first-child {
        color: var(--text);
    }

/* ===== INVITE LINK ===== */
.invite-link-box {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-family: monospace;
    font-size: 0.82rem;
    color: var(--accent);
    word-break: break-all;
}

/* ===== ERRORS ===== */
.error-summary {
    background: var(--danger-bg);
    border: 1px solid #7f1d1d;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 1.2rem;
    color: var(--danger);
    font-size: 0.85rem;
}

.field-error {
    color: var(--danger);
    font-size: 0.78rem;
}

/* ===== CONTAINER TABLE (legacy) ===== */
.container-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

    .container-table th {
        text-align: left;
        color: var(--text-muted);
        font-weight: 500;
        padding: 0.5rem 0.75rem;
        border-bottom: 1px solid var(--border);
    }

    .container-table td {
        padding: 0.6rem 0.75rem;
        border-bottom: 1px solid var(--bg-surface);
    }

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

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

.success-summary {
    background: var(--success-bg);
    border: 1px solid #14532d;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--success);
    font-size: 0.85rem;
}