/* ========== 可调主题色（改这里即可统一换色）========== */
:root {
    --primary: #FF6B35;
    --primary-dark: #E85A2A;
    --header-gradient: linear-gradient(135deg, #FF8A5B 0%, #FF6B35 55%, #E85A2A 100%);
    --bg: #F6F7F9;
    --card: #FFFFFF;
    --text-main: #1A1A1A;
    --text-sub: #666666;
    --text-hint: #999999;
    --disabled-bg: #ECECEC;
    --disabled-text: #AAAAAA;
    --border: #EEEEEE;
    --radius: 14px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.page {
    min-height: 100vh;
    padding-bottom: 24px;
}

/* ========== 顶部标题区（纯渐变，无需配图）========== */
.header {
    position: relative;
    padding: 48px 24px 36px;
    background: var(--header-gradient);
    color: #fff;
}

.header__content {
    position: relative;
    z-index: 1;
}

.header__title {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.header__subtitle {
    font-size: 14px;
    opacity: 0.92;
}

/* ========== 主内容 ========== */
.main {
    padding: 20px 16px;
}

.room-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ========== 房间卡片 ========== */
.room-card {
    position: relative;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
    display: flex;
    gap: 14px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.room-card--available {
    cursor: pointer;
}

.room-card--available:active {
    transform: scale(0.98);
}

.room-card--disabled {
    background: var(--disabled-bg);
    opacity: 0.92;
    cursor: not-allowed;
}

/* 图标占位块（替代图片） */
.room-card__icon {
    width: 76px;
    height: 76px;
    border-radius: 10px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    background: rgba(255, 107, 53, 0.10);
}

.room-card--disabled .room-card__icon {
    background: rgba(0, 0, 0, 0.05);
    filter: grayscale(0.85);
    opacity: 0.75;
}

.room-card__info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-width: 0;
}

.room-card__top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.room-card__title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
}

.room-card--disabled .room-card__title {
    color: var(--disabled-text);
}

.room-card__tag {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
    white-space: nowrap;
}

.room-card__tag--available {
    color: var(--primary);
    background: rgba(255, 107, 53, 0.12);
}

.room-card__tag--disabled {
    color: var(--disabled-text);
    background: rgba(0, 0, 0, 0.06);
}

.room-card__desc {
    font-size: 13px;
    color: var(--text-sub);
    line-height: 1.5;
    margin-bottom: 8px;
}

.room-card--disabled .room-card__desc {
    color: var(--text-hint);
}

.room-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
}

.room-card__price {
    color: var(--primary);
    font-weight: 700;
    font-size: 15px;
}

.room-card--disabled .room-card__price {
    color: var(--disabled-text);
}

.room-card__hint {
    color: var(--text-hint);
    font-size: 12px;
}

/* 不可预约角标 */
.disabled-watermark {
    position: absolute;
    right: 10px;
    bottom: 10px;
    font-size: 12px;
    color: var(--disabled-text);
    background: rgba(255, 255, 255, 0.7);
    padding: 2px 8px;
    border-radius: 12px;
}

/* ========== 预约弹窗 ========== */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: flex-end;
}

.modal.show {
    display: flex;
}

.modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s ease;
}

.modal__content {
    position: relative;
    width: 100%;
    max-height: 82vh;
    background: #fff;
    border-radius: 20px 20px 0 0;
    overflow: hidden;
    animation: slideUp 0.25s ease;
    display: flex;
    flex-direction: column;
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px 10px;
    border-bottom: 1px solid var(--border);
}

.modal__title {
    font-size: 18px;
    font-weight: 700;
}

.modal__close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-hint);
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
}

.modal__body {
    padding: 18px 20px 28px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* ========== 表单 ========== */
.booking-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    height: 46px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    color: var(--text-main);
    background: #fff;
    outline: none;
    transition: border-color 0.2s ease;
}

.form-input:focus {
    border-color: var(--primary);
}

.form-textarea {
    height: 80px;
    padding: 10px 14px;
    resize: none;
}

/* ========== 时段选择按钮组 ========== */
.time-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.time-slot {
    flex: 0 0 calc(33.33% - 6px);
    padding: 10px 0;
    text-align: center;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-main);
    background: #fff;
    cursor: pointer;
    transition: all 0.15s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.time-slot:active {
    transform: scale(0.96);
}
.time-slot--active {
    border-color: var(--primary);
    background: #FFF3ED;
    color: var(--primary);
    font-weight: 600;
}
.time-slot--disabled {
    border-color: var(--disabled-bg);
    background: var(--disabled-bg);
    color: var(--disabled-text);
    cursor: not-allowed;
    pointer-events: none;
}

.submit-btn {
    width: 100%;
    height: 48px;
    margin-top: 6px;
    border: none;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease;
}

.submit-btn:active {
    background: var(--primary-dark);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

/* ========== 轻提示 Toast ========== */
.toast {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.92);
    background: rgba(0, 0, 0, 0.82);
    color: #fff;
    padding: 13px 22px;
    border-radius: 10px;
    font-size: 14px;
    line-height: 1.4;
    max-width: 78%;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 2000;
}

.toast--show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.toast--error {
    background: rgba(220, 60, 50, 0.92);
}

.toast--success {
    background: rgba(40, 160, 90, 0.94);
}

/* ========== 日期选择弹层 ========== */
.sheet {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1100;
    align-items: flex-end;
}

.sheet.show {
    display: flex;
}

.sheet__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s ease;
}

.sheet__content {
    position: relative;
    width: 100%;
    max-height: 72vh;
    background: #fff;
    border-radius: 20px 20px 0 0;
    animation: slideUp 0.25s ease;
    display: flex;
    flex-direction: column;
}

.sheet__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
}

.sheet__cancel {
    font-size: 15px;
    color: var(--text-hint);
}

.sheet__confirm {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
}

.sheet__title {
    font-size: 16px;
    font-weight: 700;
}

.date-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 16px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.date-cell {
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 10px;
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.date-cell__label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.date-cell__sub {
    font-size: 12px;
    color: var(--text-sub);
}

.date-cell.active {
    border-color: var(--primary);
    background: rgba(255, 107, 53, 0.08);
}

.date-cell.active .date-cell__label,
.date-cell.active .date-cell__sub {
    color: var(--primary);
}