:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --bg-light: #f8fafc;
    --bg-card: #ffffff;
    --bg-dark: #0f172a;
    --text-light: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --font-family: Inter, Roboto, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    min-height: 100vh;
    font-family: var(--font-family);
    color: var(--text-light);
    background: var(--bg-light);
}

a {
    text-decoration: none;
}

.auth-page {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
}

.auth-wrapper {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.auth-card {
    width: min(100%, 420px);
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.auth-brand,
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.auth-brand {
    margin-bottom: 1.5rem;
}

.auth-brand h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.auth-brand p {
    margin: 0;
    color: var(--text-muted);
}

.brand-icon {
    display: inline-grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 14px;
    color: #fff;
    background: var(--primary);
}

.app-shell {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 270px;
    padding: 1.25rem;
    color: #fff;
    background: #0f172a;
}

.sidebar-brand {
    margin-bottom: 2rem;
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
}

.sidebar-nav {
    display: grid;
    gap: 0.35rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.9rem;
    color: #cbd5e1;
    border-radius: 10px;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    color: #fff;
    background: rgba(37, 99, 235, 0.25);
}

.app-main {
    flex: 1;
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.topbar h1 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
}

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

.user-chip {
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    color: var(--text-muted);
    background: #f1f5f9;
}

.content {
    padding: 1.5rem;
}

.card-panel,
.metric-card,
.form-card {
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.section-header h2,
.card-panel h2 {
    margin: 0 0 0.25rem;
    font-size: 1.15rem;
    font-weight: 700;
}

.section-header p,
.card-panel p {
    margin: 0;
    color: var(--text-muted);
}

.metric-card {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.metric-card strong {
    display: block;
    font-size: 2rem;
    line-height: 1;
}

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

.metric-icon {
    display: inline-grid;
    width: 54px;
    height: 54px;
    place-items: center;
    border-radius: 16px;
    font-size: 1.4rem;
}

.info-box,
.access-list div {
    display: grid;
    gap: 0.35rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.info-box i {
    color: var(--primary);
    font-size: 1.4rem;
}

.access-list {
    display: grid;
    gap: 0.75rem;
}

.access-list span,
.info-box span {
    color: var(--text-muted);
}

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(15, 23, 42, 0.35);
    color: #fff;
}

.dark-mode {
    color: #e2e8f0;
    background: var(--bg-dark);
}

.dark-mode .topbar,
.dark-mode .card-panel,
.dark-mode .metric-card,
.dark-mode .form-card,
.dark-mode .auth-card {
    color: #e2e8f0;
    background: #111827;
    border-color: #1f2937;
}

.dark-mode .user-chip {
    color: #cbd5e1;
    background: #1f2937;
}

@media (max-width: 991.98px) {
    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        z-index: 1050;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .topbar {
        align-items: flex-start;
    }
}