:root {
    --background: #f8fafc;
    --foreground: #020617;
    --card: #ffffff;
    --card-muted: #f8fafc;
    --muted: #64748b;
    --muted-foreground: #475569;
    --border: #e2e8f0;
    --input: #cbd5e1;
    --primary: #0f172a;
    --primary-foreground: #f8fafc;
    --secondary: #f1f5f9;
    --secondary-foreground: #0f172a;
    --ring: #94a3b8;
    --success: #166534;
    --success-bg: #f0fdf4;
    --danger: #b91c1c;
    --danger-bg: #fef2f2;
    --radius: 0.75rem;
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 12px 32px rgba(15, 23, 42, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top right, rgba(148, 163, 184, 0.18), transparent 28rem),
        linear-gradient(180deg, #ffffff 0%, var(--background) 34rem);
    color: var(--foreground);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.ambient {
    display: none;
}

.page {
    position: relative;
    max-width: 1180px;
    margin: 0 auto;
    padding: 2rem 1rem 3rem;
}

.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.auth-panel,
.dashboard-topbar,
.routes-panel {
    padding: 1.5rem;
}

.auth-panel {
    max-width: 34rem;
    margin: 12vh auto 0;
}

.hidden {
    display: none !important;
}

.eyebrow {
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin: 0;
}

h1,
h2,
h3 {
    font-weight: 700;
    letter-spacing: -0.03em;
}

h1 {
    margin-top: 0.35rem;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1;
}

h2 {
    margin-top: 0.25rem;
    font-size: 1.35rem;
}

.lead {
    max-width: 52rem;
    margin-top: 0.85rem;
    color: var(--muted-foreground);
    font-size: 0.98rem;
    line-height: 1.65;
}

.dashboard {
    display: grid;
    gap: 1rem;
}

.dashboard-topbar {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}

.topbar-actions,
.route-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.auth-form,
.field-grid {
    display: grid;
    gap: 1rem;
}

.auth-form {
    margin-top: 1.5rem;
}

.field-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
    display: grid;
    gap: 0.45rem;
}

.field span,
.checkbox-field span {
    color: var(--foreground);
    font-size: 0.875rem;
    font-weight: 500;
}

.field small {
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.4;
}

input,
select,
textarea,
button {
    font: inherit;
}

input,
select,
textarea {
    width: 100%;
    min-height: 2.5rem;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--input);
    border-radius: calc(var(--radius) - 0.25rem);
    background: var(--card);
    color: var(--foreground);
    transition: border-color 120ms ease, box-shadow 120ms ease;
}

textarea {
    min-height: 9rem;
    resize: vertical;
    line-height: 1.5;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--ring);
    box-shadow: 0 0 0 3px rgba(148, 163, 184, 0.24);
}

button {
    border: 1px solid transparent;
    border-radius: calc(var(--radius) - 0.25rem);
    min-height: 2.5rem;
    padding: 0.55rem 0.9rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 120ms ease, border-color 120ms ease, opacity 120ms ease;
}

button:disabled {
    cursor: default;
    opacity: 0.6;
}

.primary-button {
    background: var(--primary);
    color: var(--primary-foreground);
}

.primary-button:hover:not(:disabled) {
    background: #1e293b;
}

.secondary-button,
.ghost-button,
.route-action {
    background: var(--card);
    color: var(--secondary-foreground);
    border-color: var(--border);
}

.secondary-button:hover:not(:disabled),
.ghost-button:hover:not(:disabled),
.route-action:hover:not(:disabled) {
    background: var(--secondary);
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.message {
    padding: 0.85rem 1rem;
    border-radius: calc(var(--radius) - 0.25rem);
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--foreground);
    font-size: 0.9rem;
}

.message.error {
    border-color: #fecaca;
    background: var(--danger-bg);
    color: var(--danger);
}

.message.success {
    border-color: #bbf7d0;
    background: var(--success-bg);
    color: var(--success);
}

.routes-list {
    display: grid;
    gap: 1rem;
}

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

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

.route-label {
    display: grid;
    gap: 0.25rem;
}

.route-index,
.route-section-title {
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.route-title {
    font-size: 1.15rem;
    font-weight: 650;
}

.route-layout {
    display: grid;
    gap: 1rem;
}

.route-section {
    display: grid;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-muted);
}

.route-section-heading p {
    margin-top: 0.3rem;
    color: var(--muted);
    font-size: 0.875rem;
}

.checkbox-field {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-height: 2.5rem;
    padding: 0.55rem 0.75rem;
    border-radius: calc(var(--radius) - 0.25rem);
    border: 1px solid var(--border);
    background: var(--card);
}

.checkbox-field input {
    width: 1rem;
    min-height: 1rem;
    margin: 0;
    accent-color: var(--primary);
}

.empty-state {
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px dashed var(--input);
    background: var(--card-muted);
    color: var(--muted);
    text-align: center;
}

@media (max-width: 900px) {
    .dashboard-topbar,
    .section-heading,
    .route-header {
        flex-direction: column;
        align-items: stretch;
    }

    .field-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page {
        padding: 1rem 0.75rem 2rem;
    }

    .auth-panel,
    .dashboard-topbar,
    .routes-panel,
    .route-card,
    .route-section {
        padding: 1rem;
    }
}