:root {
    --bg: #f7f7f5;
    --surface: #ffffff;
    --text: #1a1a1a;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #111111;
    --primary-hover: #333333;
    --accent: #f3f4f6;
    --danger: #dc2626;
    --success: #16a34a;
    --radius: 16px;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

.page {
    min-height: 100vh;
}

.hidden {
    display: none !important;
}

.welcome {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
}

.welcome-inner {
    text-align: center;
    max-width: 480px;
}

.eyebrow {
    margin: 0 0 12px;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

.welcome h1,
.quiz h2 {
    margin: 0 0 12px;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.03em;
}

.subtitle,
.hint,
.empty {
    color: var(--muted);
    margin: 0 0 24px;
}

.btn {
    border: none;
    border-radius: 999px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary {
    background: var(--accent);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-danger {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.btn-xl {
    padding: 18px 48px;
    font-size: 1.1rem;
    min-width: 240px;
}

.quiz {
    padding: 32px 16px 64px;
}

.quiz-inner {
    max-width: 640px;
    margin: 0 auto;
}

.progress {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.progress-step {
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.85rem;
}

.progress-step.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.progress-step.done {
    color: var(--text);
}

.quiz-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    margin-bottom: 16px;
    background: var(--bg);
}

.search-input:focus,
input[type="text"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="time"]:focus {
    outline: none;
    border-color: var(--primary);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 420px;
    overflow-y: auto;
}

.service-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    width: 100%;
    padding: 16px 18px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
    cursor: pointer;
    text-align: left;
    transition: 0.15s ease;
}

.service-item:hover {
    border-color: #cbd5e1;
}

.service-item.selected {
    border-color: var(--primary);
    background: #fff;
    box-shadow: inset 0 0 0 1px var(--primary);
}

.service-item-name {
    font-weight: 600;
}

.service-item-meta {
    color: var(--muted);
    font-size: 0.92rem;
}

.calendar {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg);
}

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.calendar-title {
    font-weight: 600;
}

.calendar-nav {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    cursor: pointer;
}

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

.calendar-weekdays {
    padding: 10px 8px 0;
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
}

.calendar-grid {
    padding: 8px;
    gap: 4px;
}

.calendar-day {
    aspect-ratio: 1;
    border: none;
    border-radius: 10px;
    background: var(--surface);
    cursor: pointer;
    font-size: 0.95rem;
}

.calendar-day:hover:not(:disabled) {
    background: var(--accent);
}

.calendar-day.selected {
    background: var(--primary);
    color: #fff;
}

.calendar-day.disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.time-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.time-slot {
    min-width: 72px;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    cursor: pointer;
    font-size: 0.95rem;
}

.time-slot.selected {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

label {
    display: block;
    margin: 16px 0 8px;
    color: var(--muted);
    font-size: 0.9rem;
}

input[type="text"],
input[type="tel"],
input[type="password"],
input[type="number"],
input[type="time"] {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--bg);
}

.preview-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.preview-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}

.preview-row span {
    color: var(--muted);
}

.quiz-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.error {
    color: var(--danger);
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: 16px;
}

.success {
    color: var(--success);
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    padding: 12px 16px;
    border-radius: 12px;
    margin-top: 16px;
}

/* Admin */
.admin-page {
    min-height: 100vh;
}

.admin-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-header h1 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.admin-main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px 48px;
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.tab {
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--muted);
    text-decoration: none;
    font-weight: 500;
}

.tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.tab-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.view-switch {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.view-btn {
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg);
    cursor: pointer;
}

.view-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.calendar-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.calendar-controls input[type="date"] {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.booking-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.booking-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: start;
}

.booking-card-meta {
    color: var(--muted);
    font-size: 0.9rem;
    margin-top: 4px;
}

.week-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.week-day {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    min-height: 120px;
    background: var(--bg);
}

.week-day-title {
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.week-booking {
    font-size: 0.8rem;
    padding: 6px 8px;
    background: var(--surface);
    border-radius: 8px;
    margin-bottom: 6px;
    border: 1px solid var(--border);
}

.month-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.month-cell {
    min-height: 90px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px;
    background: var(--bg);
    font-size: 0.75rem;
}

.month-cell.other-month {
    opacity: 0.4;
}

.month-cell-head {
    font-weight: 600;
    margin-bottom: 4px;
}

.month-booking {
    padding: 2px 4px;
    background: var(--surface);
    border-radius: 4px;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.grid-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    align-items: end;
    margin-bottom: 24px;
}

.table-wrap {
    overflow-x: auto;
}

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

th, td {
    padding: 12px 8px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: middle;
}

th {
    color: var(--muted);
    font-weight: 600;
    font-size: 0.85rem;
}

.inline-form {
    display: inline;
}

.actions {
    white-space: nowrap;
}

.checkbox-inline,
.checkbox-field {
    display: flex;
    align-items: center;
    gap: 8px;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: min(400px, 100%);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.login-card h1 {
    margin: 0 0 8px;
    font-size: 1.5rem;
}

.back-link {
    display: inline-block;
    margin-top: 16px;
    color: var(--muted);
    text-decoration: none;
}

.admin-month-calendar {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg);
    margin-bottom: 16px;
    max-width: 520px;
}

.admin-calendar-grid {
    padding: 4px;
    gap: 2px;
}

.admin-calendar-day {
    min-height: 44px;
    aspect-ratio: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 4px 2px;
    text-align: center;
    font-size: 0.8rem;
}

.admin-calendar-day .day-number {
    font-weight: 600;
    font-size: 0.85rem;
}

.admin-calendar-day .day-count {
    font-size: 0.65rem;
    color: #fff;
    background: var(--primary);
    border-radius: 999px;
    padding: 1px 5px;
    line-height: 1.2;
}

.calendar-weekdays {
    font-size: 0.75rem;
    padding: 6px 4px 0;
}

.hp-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.backup-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.backup-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
}

.settings-section {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.settings-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.admin-calendar-day.today {
    box-shadow: inset 0 0 0 2px var(--primary);
}

.detail-panel {
    margin-top: 20px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
}

.detail-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.detail-panel h3,
.detail-panel h4 {
    margin: 0 0 12px;
}

.period-day-section {
    margin-top: 20px;
}

.select-input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    font-size: 1rem;
    margin-bottom: 16px;
}

.available-slots-result {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.available-day-block h4 {
    margin: 0 0 8px;
}

.time-slot.readonly {
    cursor: default;
    background: var(--surface);
}

.share-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.calendar-title {
    font-weight: 600;
    min-width: 160px;
    text-align: center;
}

@media (max-width: 640px) {
    .quiz-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .booking-card {
        grid-template-columns: 1fr;
    }
}