:root {
    color-scheme: light;
    --bg: #f4f7fb;
    --surface: #ffffff;
    --surface-alt: #0f172a;
    --text: #0f172a;
    --muted: #64748b;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #15803d;
    --error: #b91c1c;
    --border: #dbe3ef;
    --shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
    --radius: 18px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #eef4ff 0%, var(--bg) 100%);
    color: var(--text);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-layout {
    width: min(1040px, 100%);
    display: grid;
    grid-template-columns: 1.2fr 0.9fr;
    background: var(--surface);
    border-radius: 28px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.auth-panel {
    padding: 56px;
    background: radial-gradient(circle at top left, #3b82f6 0%, #1e3a8a 70%);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 32px;
}

.auth-panel h1 {
    margin: 0 0 16px;
    font-size: clamp(2rem, 4vw, 3.4rem);
}

.auth-panel p,
.auth-panel li {
    color: rgba(255, 255, 255, 0.82);
}

.auth-panel ul {
    padding-left: 20px;
    margin: 0;
}

.auth-card {
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 18px;
}

.eyebrow::before {
    content: "";
    width: 28px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
}

.page-title {
    margin: 0 0 10px;
    font-size: 2rem;
}

.page-subtitle {
    margin: 0 0 32px;
    color: var(--muted);
    line-height: 1.6;
}

.form-grid {
    display: grid;
    gap: 18px;
}

.field-group {
    display: grid;
    gap: 8px;
}

.field-group label {
    font-weight: 700;
    font-size: 0.95rem;
}

.field-group input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    font-size: 1rem;
    background: #f8fbff;
}

.field-group select,
.field-group textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    background: #f8fbff;
}

.field-group select {
    appearance: none;
    min-height: 52px;
}

.field-group input[type="file"] {
    padding: 12px 14px;
    background: #f8fbff;
}

.field-group input:focus {
    outline: 2px solid rgba(37, 99, 235, 0.18);
    border-color: var(--primary);
}

.field-group select:focus,
.field-group textarea:focus {
    outline: 2px solid rgba(37, 99, 235, 0.18);
    border-color: var(--primary);
}

.btn,
button {
    appearance: none;
    border: 0;
    border-radius: 14px;
    background: var(--primary);
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    padding: 14px 20px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.btn:hover,
button:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: #e2e8f0;
    color: var(--text);
}

.btn-danger {
    background: var(--error);
}

.btn-danger:hover {
    background: #991b1b;
}

.btn-small {
    padding: 10px 14px;
    font-size: 0.92rem;
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 22px;
    font-size: 0.95rem;
    border: 1px solid transparent;
}

.alert-success {
    background: #dcfce7;
    border-color: #86efac;
    color: #166534;
}

.alert-error {
    background: #fee2e2;
    border-color: #fca5a5;
    color: #991b1b;
}

.hint {
    font-size: 0.92rem;
    color: var(--muted);
}

.dashboard-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 280px 1fr;
}

.sidebar {
    background: var(--surface-alt);
    color: #fff;
    padding: 28px 22px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.brand-card {
    display: flex;
    gap: 14px;
    align-items: center;
}

.brand-card p {
    margin: 4px 0 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.92rem;
}

.brand-badge {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, 0.14);
    font-weight: 700;
}

.nav-menu {
    display: grid;
    gap: 8px;
}

.nav-menu a {
    padding: 12px 14px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.82);
    font-weight: 700;
}

.nav-menu a:hover,
.nav-menu a.is-active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.nav-logout {
    margin-top: 10px;
    color: #fca5a5;
}

.sidebar-footer {
    margin-top: auto;
    padding: 16px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.08);
}

.sidebar-footer span,
.sidebar-footer small {
    display: block;
    color: rgba(255, 255, 255, 0.7);
}

.sidebar-footer strong {
    display: block;
    margin: 8px 0 4px;
}

.content {
    padding: 32px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 28px;
}

.topbar h1 {
    margin: 0 0 8px;
    font-size: 2rem;
}

.topbar p {
    margin: 0;
    color: var(--muted);
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.92rem;
    color: var(--muted);
}

.card-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 26px;
}

.metric-card,
.content-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.metric-card span {
    display: block;
    color: var(--muted);
    margin-bottom: 12px;
}

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

.metric-card small {
    display: block;
    margin-top: 10px;
    color: var(--muted);
}

.content-grid {
    display: grid;
    gap: 18px;
    grid-template-columns: 1.3fr 0.9fr;
}

.content-card h2 {
    margin-top: 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
}

.section-header h2,
.section-header p {
    margin: 0;
}

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.table-actions form {
    margin: 0;
}

.form-inline {
    display: inline;
}

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

.list-table th,
.list-table td {
    padding: 14px 0;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.list-table th {
    color: var(--muted);
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.empty-state {
    margin: 0;
    color: var(--muted);
}

.stack {
    display: grid;
    gap: 18px;
}

.form-card-stack {
    display: grid;
    gap: 14px;
}

.panel-box {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: #f8fbff;
}

.panel-box h3 {
    margin: 0 0 8px;
    font-size: 1.02rem;
}

.panel-box p {
    margin: 0 0 14px;
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: end;
}

.action-row .field-group {
    flex: 1 1 240px;
}

.action-row .btn,
.action-row button {
    flex: 0 0 auto;
}

.table-note {
    font-size: 0.88rem;
    color: var(--muted);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    display: inline-block;
}

@media (max-width: 980px) {
    .auth-layout,
    .dashboard-shell,
    .content-grid,
    .card-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        padding-bottom: 16px;
    }
}

@media (max-width: 640px) {
    .auth-panel,
    .auth-card,
    .content {
        padding: 24px;
    }

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

    .page-title,
    .topbar h1 {
        font-size: 1.7rem;
    }

    .metric-card strong {
        font-size: 1.7rem;
    }

    .table-actions,
    .section-header {
        justify-content: flex-start;
    }
}