/* 花信 · 北京花期追踪 - 样式文件 */
/* 沿用「节物」水墨书卷美学 */

:root {
    /* 颜色系统 */
    --paper: #faf8f5;
    --ink-wash: #f0ede8;
    --ink-light: #c4c0b8;
    --ink-mid: #7a766e;
    --ink-deep: #45423d;
    --ink-full: #2a2825;
    --accent-warm: #b8a692;

    /* 间距系统 */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 56px;
    --space-xl: 96px;

    /* 字体 */
    --font-main: 'LXGW WenKai', 'Kaiti SC', 'STKaiti', serif;
}

/* 基础重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    background: var(--paper);
    color: var(--ink-deep);
    line-height: 2;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    letter-spacing: 0.05em;
}

/* 背景纹理 */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(0,0,0,0.02) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* 容器 */
.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    position: relative;
    z-index: 1;
}

/* ========== 主视觉区域 ========== */
.hero-section {
    text-align: center;
    padding-top: var(--space-lg);
    padding-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeUp 1s ease 0.2s forwards;
}

.season-date {
    font-size: 12px;
    letter-spacing: 0.4em;
    color: var(--ink-mid);
    margin-bottom: var(--space-xs);
}

.season-name {
    font-size: 14px;
    letter-spacing: 0.3em;
    color: var(--ink-deep);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 16px;
}

.season-line {
    width: 24px;
    height: 1px;
    background: var(--ink-light);
}

.main-title {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: 0.5em;
    color: var(--ink-full);
    margin: var(--space-md) 0;
    margin-left: 0.5em;
    line-height: 1.6;
}

.poem-subtitle {
    font-size: 15px;
    font-weight: 300;
    line-height: 2.4;
    color: var(--ink-deep);
    max-width: 400px;
    margin: 0 auto;
}

/* ========== 三段式时间轴 ========== */
.timeline-section {
    margin-bottom: var(--space-lg);
}

.timeline-block {
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeUp 1s ease forwards;
}

.timeline-block:nth-child(1) { animation-delay: 0.4s; }
.timeline-block:nth-child(2) { animation-delay: 0.6s; }
.timeline-block:nth-child(3) { animation-delay: 0.8s; }

.timeline-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--space-sm);
}

.timeline-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.timeline-dot.blooming {
    background: var(--accent-warm);
}

.timeline-dot.upcoming {
    background: var(--ink-light);
    border: 2px solid var(--accent-warm);
    box-sizing: border-box;
}

.timeline-dot.future {
    width: 8px;
    height: 8px;
    background: var(--ink-wash);
}

.timeline-title {
    font-size: 13px;
    color: var(--ink-deep);
    letter-spacing: 0.1em;
}

.timeline-title.upcoming {
    color: var(--ink-mid);
}

.timeline-title.future {
    color: var(--ink-light);
}

.timeline-subtitle {
    font-size: 11px;
    color: var(--ink-mid);
}

/* 卡片样式 - 正在盛开 */
.location-card {
    position: relative;
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-sm);
    margin-left: 20px;
    border: 1px solid var(--ink-wash);
    border-radius: 3px;
    background: rgba(255,255,255,0.4);
    transition: all 0.4s ease;
}

.location-card:hover {
    border-color: var(--ink-light);
    background: rgba(255,255,255,0.7);
    box-shadow: 0 4px 24px rgba(0,0,0,0.04);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.card-name {
    font-size: 15px;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--ink-full);
}

.card-badge {
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 2px;
    background: var(--accent-warm);
    color: #fff;
    letter-spacing: 0.05em;
}

.card-info {
    font-size: 12px;
    color: var(--ink-mid);
    margin-bottom: 4px;
}

.card-meta {
    font-size: 10px;
    color: var(--accent-warm);
    margin-top: 6px;
}

/* 卡片样式 - 即将盛开 */
.location-card.upcoming {
    background: rgba(255,255,255,0.2);
    border: 1px dashed var(--ink-light);
}

.location-card.upcoming .card-name {
    color: var(--ink-mid);
}

.location-card.upcoming .card-info {
    color: var(--ink-light);
}

.location-card.upcoming .card-badge {
    background: transparent;
    color: var(--ink-light);
    border: 1px solid var(--ink-light);
}

/* 未来花期列表 */
.timeline-list {
    padding-left: 20px;
}

.future-item {
    font-size: 12px;
    color: var(--ink-light);
    line-height: 2.2;
    display: flex;
    align-items: center;
    gap: 8px;
}

.future-item::before {
    content: '·';
    color: var(--ink-wash);
}

/* ========== 分享按钮 ========== */
.share-section {
    text-align: center;
    margin: var(--space-lg) 0;
    opacity: 0;
    animation: fadeUp 1s ease 1s forwards;
}

.share-btn {
    font-family: var(--font-main);
    font-size: 13px;
    letter-spacing: 0.15em;
    color: var(--ink-deep);
    background: transparent;
    border: 1px solid var(--ink-full);
    padding: 10px 28px;
    cursor: pointer;
    transition: all 0.4s ease;
}

.share-btn:hover {
    background: var(--ink-full);
    color: var(--paper);
}

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

/* ========== 品牌纹饰 ========== */
.brand-mark {
    text-align: center;
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeIn 0.8s ease 1.2s forwards;
}

.mark-glyph {
    font-size: 40px;
    font-weight: 300;
    color: var(--ink-wash);
    letter-spacing: 0.3em;
    margin-left: 0.3em;
    user-select: none;
}

/* ========== 页脚 ========== */
.page-footer {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    padding-bottom: var(--space-lg);
    border-top: 1px solid var(--ink-wash);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    opacity: 0;
    animation: fadeUp 1s ease 1.4s forwards;
}

.footer-brand {
    font-size: 12px;
    font-weight: 400;
    color: var(--ink-deep);
    letter-spacing: 0.2em;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-brand:hover {
    color: var(--ink-full);
}

.footer-time {
    font-size: 11px;
    letter-spacing: 0.15em;
    color: var(--ink-mid);
}

/* ========== 动画 ========== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ========== 响应式 ========== */
@media (max-width: 600px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .main-title {
        font-size: 28px;
        letter-spacing: 0.35em;
        margin-left: 0.35em;
    }

    .poem-subtitle {
        font-size: 14px;
    }

    .season-line {
        width: 12px;
    }

    .location-card {
        padding: var(--space-sm);
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .page-footer {
        flex-direction: column;
        gap: var(--space-xs);
        text-align: center;
    }
}

@media print {
    .share-section {
        display: none;
    }
}

/* ========== 错误/加载状态 ========== */
.error-message {
    text-align: center;
    padding: var(--space-lg);
    color: var(--ink-mid);
    font-size: 14px;
}

.loading {
    text-align: center;
    padding: var(--space-lg);
    color: var(--ink-mid);
    font-size: 14px;
    opacity: 0.6;
}