/* ============================================================
   予約管理アプリ - スタイルシート
   ============================================================ */

:root {
    --primary: #c0392b;
    --primary-dark: #a93226;
    --primary-light: #e74c3c;
    --accent: #f39c12;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
    --font: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ---- Layout ---- */
.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 16px;
}

.container-wide {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
}

/* ---- Header (Customer) ---- */
.header-customer {
    background: var(--primary);
    color: #fff;
    padding: 16px 20px;
    text-align: center;
}
.header-customer h1 {
    font-size: 18px;
    font-weight: 600;
}
.header-customer .subtitle {
    font-size: 13px;
    opacity: 0.85;
    margin-top: 2px;
}

/* ---- Cards ---- */
.card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 16px;
}
.card-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    color: var(--gray-800);
}

/* ---- Step Indicator ---- */
.steps {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 16px 0;
}
.step {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    background: var(--gray-200);
    color: var(--gray-500);
    transition: all 0.3s;
}
.step.active {
    background: var(--primary);
    color: #fff;
}
.step.done {
    background: var(--success);
    color: #fff;
}

/* ---- Calendar ---- */
.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.calendar-nav button {
    background: none;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: 6px 12px;
    cursor: pointer;
    font-size: 14px;
    color: var(--gray-700);
}
.calendar-nav button:hover { background: var(--gray-100); }
.calendar-nav .month-label {
    font-size: 16px;
    font-weight: 700;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}
.calendar-grid .day-header {
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-500);
    padding: 4px 0;
}
.calendar-grid .day-header.sun { color: var(--danger); }
.calendar-grid .day-header.sat { color: #2980b9; }

.calendar-grid .day-cell {
    text-align: center;
    padding: 4px 2px;
    border-radius: var(--radius);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    position: relative;
}
.calendar-grid .day-cell .day-num {
    line-height: 1.2;
}
.calendar-grid .day-cell:hover { background: var(--gray-100); }
.calendar-grid .day-cell.today { border: 2px solid var(--primary); }
.calendar-grid .day-cell.selected { background: var(--primary); color: #fff; }
.calendar-grid .day-cell.selected .mark-available,
.calendar-grid .day-cell.selected .mark-few { color: #fff; }
.calendar-grid .day-cell.disabled {
    color: var(--gray-300);
    cursor: default;
    background: var(--gray-50);
}
.calendar-grid .day-cell.disabled:hover { background: var(--gray-50); }
.calendar-grid .day-cell.holiday {
    color: var(--gray-400);
    cursor: default;
    position: relative;
}
.calendar-grid .day-cell.holiday::after {
    content: '休';
    font-size: 9px;
    color: var(--danger);
    display: block;
}
.calendar-grid .day-cell.sun-day { color: var(--danger); }
.calendar-grid .day-cell.sat-day { color: #2980b9; }
.calendar-grid .day-cell.past {
    color: var(--gray-300);
    cursor: default;
}

/* ---- Availability Marks (◯△✕) ---- */
.calendar-grid .day-cell .avail-mark {
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    display: block;
}
.calendar-grid .day-cell .mark-available {
    color: var(--success);
}
.calendar-grid .day-cell .mark-few {
    color: var(--warning);
}
.calendar-grid .day-cell .mark-full {
    color: var(--gray-400);
}
.calendar-grid .day-cell.full-day {
    color: var(--gray-400);
    cursor: default;
    background: var(--gray-50);
}
.calendar-grid .day-cell.full-day:hover {
    background: var(--gray-50);
}
.calendar-grid .day-cell.full-day .day-num {
    color: var(--gray-400);
}

/* ---- Calendar Legend ---- */
.calendar-legend {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 8px;
    font-size: 12px;
    color: var(--gray-500);
}
.calendar-legend span {
    display: flex;
    align-items: center;
    gap: 4px;
}
.calendar-legend .legend-mark {
    font-weight: 700;
    font-size: 13px;
}
.calendar-legend .legend-available { color: var(--success); }
.calendar-legend .legend-few { color: var(--warning); }
.calendar-legend .legend-full { color: var(--gray-400); }

/* ---- Time Slots ---- */
.time-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.time-slot {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    background: #fff;
    display: flex;
    align-items: center;
    gap: 6px;
}
.time-slot:hover { border-color: var(--primary); color: var(--primary); }
.time-slot.selected { background: var(--primary); color: #fff; border-color: var(--primary); }
.time-slot.selected .slot-mark { color: #fff; }
.time-slot.full,
.time-slot.slot-full {
    background: var(--gray-100);
    color: var(--gray-400);
    cursor: default;
    border-color: var(--gray-200);
}
.time-slot.slot-full:hover {
    border-color: var(--gray-200);
    color: var(--gray-400);
}
.time-slot.slot-available {
    border-color: var(--success);
    border-width: 1px;
}
.time-slot.slot-few {
    border-color: var(--warning);
    border-width: 1px;
}
.slot-mark {
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}
.slot-mark-available { color: var(--success); }
.slot-mark-few { color: var(--warning); }
.slot-mark-full { color: var(--gray-400); }

/* ---- Form ---- */
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--gray-700);
}
.form-group label .required {
    color: var(--danger);
    font-size: 12px;
    margin-left: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 16px;
    font-family: var(--font);
    transition: border-color 0.2s;
    -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(192,57,43,0.1);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group .help-text {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 4px;
}
.form-group .error-text {
    font-size: 12px;
    color: var(--danger);
    margin-top: 4px;
    display: none;
}
.form-group.has-error input,
.form-group.has-error select {
    border-color: var(--danger);
}
.form-group.has-error .error-text { display: block; }

/* ---- Reservation Type Toggle ---- */
.type-toggle {
    display: flex;
    gap: 8px;
}
.type-toggle button {
    flex: 1;
    padding: 12px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    background: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--gray-600);
}
.type-toggle button.active {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
}

/* ---- Course Cards ---- */
.course-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.course-card {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
}
.course-card:hover { border-color: var(--primary-light); }
.course-card.selected { border-color: var(--primary); background: #fef2f2; }
.course-card .course-image {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: var(--gray-100);
}
.course-card .course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.course-card .course-info {
    padding: 16px;
}
.course-card .course-name {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}
.course-card .course-desc {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 8px;
}
.course-card .course-price {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}
.course-card .course-price .per-person {
    font-size: 12px;
    color: var(--gray-500);
    font-weight: 400;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-family: var(--font);
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    width: 100%;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}
.btn-secondary {
    background: #fff;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}
.btn-secondary:hover { background: var(--gray-100); }
.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover { background: #c0392b; }
.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}
.btn-block { width: 100%; }

/* ---- Confirmation ---- */
.confirm-table {
    width: 100%;
    border-collapse: collapse;
}
.confirm-table th,
.confirm-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
    font-size: 14px;
}
.confirm-table th {
    width: 35%;
    color: var(--gray-500);
    font-weight: 500;
    vertical-align: top;
}
.confirm-table td {
    font-weight: 600;
}

/* ---- Complete Screen ---- */
.complete-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--success);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 16px;
}
.complete-message {
    text-align: center;
    margin-bottom: 24px;
}
.complete-message h2 {
    font-size: 20px;
    margin-bottom: 8px;
}
.complete-message p {
    color: var(--gray-500);
    font-size: 14px;
}
.reservation-code {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
    margin: 16px 0;
    padding: 12px;
    background: var(--gray-50);
    border-radius: var(--radius);
}

/* ---- Notes ---- */
.notes-box {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: var(--radius);
    padding: 12px 16px;
    font-size: 13px;
    color: #92400e;
    line-height: 1.8;
    white-space: pre-line;
}

/* ---- Loading ---- */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    display: none;
}
.loading-overlay.active { display: flex; }
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Total Price ---- */
.total-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    text-align: right;
    padding: 12px 0;
    border-top: 2px solid var(--gray-200);
    margin-top: 8px;
}

/* ---- Hidden ---- */
.hidden { display: none !important; }

/* ---- Responsive ---- */
@media (max-width: 480px) {
    .container { padding: 8px; }
    .card { padding: 16px; }
    .time-slots { gap: 6px; }
    .time-slot { padding: 8px 12px; font-size: 13px; }
}