:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-800: #1e293b;
    --white: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.5;
}

.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header,
.footer,
.content {
    width: min(960px, calc(100% - 2rem));
    margin: 0 auto;
}

.header {
    padding: 1.5rem 0 1rem;
}

.brand {
    font-weight: 700;
    color: var(--blue-700);
}

.content {
    flex: 1;
    padding-bottom: 2rem;
}

.footer {
    padding: 1rem 0 2rem;
    color: var(--gray-500);
}

.card {
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

h1, h2, h3 {
    margin-top: 0;
}

.eyebrow {
    color: var(--gray-500);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.muted {
    color: var(--gray-500);
}

.notice {
    background: var(--gray-100);
    border-left: 4px solid var(--blue-600);
    padding: 0.75rem 1rem;
}

.choice-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    margin-top: 1rem;
}

.choice-card {
    display: block;
    padding: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.choice-card:hover {
    border-color: var(--blue-600);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

button.choice-button {
    width: 100%;
    text-align: left;
    background: var(--white);
    cursor: pointer;
    font: inherit;
}

button.choice-button h2 {
    font-size: 1.1rem;
}

.btn {
    display: inline-block;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    border: 1px solid transparent;
    text-decoration: none;
    cursor: pointer;
    font: inherit;
}

.btn-primary {
    background: var(--blue-600);
    color: var(--white);
}

.btn-secondary {
    background: var(--white);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.stack {
    display: grid;
    gap: 1rem;
    margin-top: 1rem;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

label {
    display: grid;
    gap: 0.35rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font: inherit;
}

.divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    color: var(--gray-500);
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--gray-300);
}

.calendar-layout {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1.2fr 0.8fr;
}

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

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.35rem;
}

.calendar-weekday,
.calendar-day {
    text-align: center;
    padding: 0.65rem 0.25rem;
    border-radius: 8px;
}

.calendar-weekday {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.calendar-day {
    border: 1px solid var(--gray-300);
    text-decoration: none;
    color: inherit;
    font-weight: 500;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.calendar-day.available {
    background: var(--blue-100);
    border: 2px solid var(--blue-600);
    color: var(--blue-700);
    font-weight: 700;
}

.calendar-day.available:hover {
    background: var(--blue-50);
    border-color: var(--blue-700);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

.calendar-day.unavailable {
    color: var(--gray-400);
    background: var(--gray-50);
    border: 1px dashed var(--gray-300);
    font-weight: 400;
    cursor: not-allowed;
}

.calendar-day.selected {
    background: var(--blue-600);
    border: 2px solid var(--blue-700);
    color: var(--white);
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.28);
}

.calendar-day.selected:hover {
    background: var(--blue-700);
    border-color: var(--blue-700);
    color: var(--white);
}

.calendar-day.empty {
    border: none;
    background: transparent;
}

.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.calendar-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.calendar-legend-item::before {
    content: "";
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 6px;
}

.calendar-legend-item.available::before {
    background: var(--blue-100);
    border: 2px solid var(--blue-600);
}

.calendar-legend-item.unavailable::before {
    background: var(--gray-50);
    border: 1px dashed var(--gray-300);
}

.calendar-legend-item.selected::before {
    background: var(--blue-600);
    border: 2px solid var(--blue-700);
}

.slot-list {
    display: grid;
    gap: 0.5rem;
    margin-top: 1rem;
}

.slot-btn {
    display: block;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    text-align: center;
}

.slot-btn:hover {
    border-color: var(--blue-600);
}

.loading.hidden {
    display: none;
}

.form-error {
    background: #fef2f2;
    border-left: 4px solid #dc2626;
    color: #991b1b;
    padding: 0.75rem 1rem;
    margin: 1rem 0;
}

.summary-list {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.5rem 1.5rem;
    margin: 1.5rem 0;
}

.summary-list dt {
    color: var(--gray-500);
    font-weight: 600;
}

.summary-list dd {
    margin: 0;
}

@media (max-width: 768px) {
    .calendar-layout {
        grid-template-columns: 1fr;
    }
}