/* ============ 基础变量 ============ */
:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #e94560;
    --accent-light: #ff6b6b;
    --gold: #c9a227;
    --gold-light: #f0d78c;
    --text: #f1f1f1;
    --text-muted: #a0a0a0;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-hover: rgba(255, 255, 255, 0.08);
    --birth-color: #4ecdc4;
    --death-color: #e94560;
    --event-color: #f7b731;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    min-height: 100vh;
    color: var(--text);
    overflow-x: hidden;
}

/* ============ 背景装饰 ============ */
.bg-decoration {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0; overflow: hidden;
}
.bg-decoration::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at 20% 80%, rgba(233, 69, 96, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(201, 162, 39, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 50% 50%, rgba(78, 205, 196, 0.05) 0%, transparent 50%);
    animation: bgFloat 20s ease-in-out infinite;
}
@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(1deg); }
    66% { transform: translate(-20px, 20px) rotate(-1deg); }
}

/* ============ 头部 ============ */
header {
    position: relative; z-index: 10; text-align: center; padding: 50px 20px 20px;
}
.logo {
    font-family: 'Noto Serif SC', serif; font-size: 2.8rem; font-weight: 700;
    background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-light) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    text-shadow: 0 0 30px rgba(201, 162, 39, 0.3);
    margin-bottom: 8px; letter-spacing: 4px;
}
.subtitle {
    color: var(--text-muted); font-size: 1rem; letter-spacing: 4px;
}

/* ============ 主容器 ============ */
.container {
    position: relative; z-index: 10; max-width: 900px;
    margin: 0 auto; padding: 0 20px 40px;
}

/* ============ 日期选择器 ============ */
.date-selector {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 20px 24px; margin-bottom: 20px;
    backdrop-filter: blur(10px);
}
.date-selector-inner {
    display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.date-label {
    font-size: 0.95rem; color: var(--text-muted); letter-spacing: 2px; white-space: nowrap;
}
.date-controls {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.date-select {
    background: var(--secondary); color: var(--text); border: 1px solid var(--card-border);
    border-radius: 8px; padding: 8px 14px; font-size: 0.95rem; cursor: pointer;
    transition: all 0.3s; font-family: inherit;
}
.date-select:hover { border-color: var(--gold); }
.date-select:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 2px rgba(201, 162, 39, 0.2); }
.date-select option { background: var(--secondary); }

.btn-query, .btn-today {
    border: none; border-radius: 8px; padding: 8px 20px; font-size: 0.95rem;
    cursor: pointer; transition: all 0.3s; font-family: inherit; font-weight: 500;
}
.btn-query {
    background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: #1a1a2e;
}
.btn-query:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(201, 162, 39, 0.3); }
.btn-today {
    background: var(--card-bg); color: var(--text); border: 1px solid var(--card-border);
}
.btn-today:hover { border-color: var(--accent); color: var(--accent-light); }

/* ============ 分类标签 ============ */
.tabs {
    display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap;
}
.tab {
    background: var(--card-bg); border: 1px solid var(--card-border); color: var(--text-muted);
    padding: 8px 22px; border-radius: 20px; cursor: pointer; font-size: 0.9rem;
    transition: all 0.3s; font-family: inherit;
}
.tab:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.2); }
.tab.active { background: var(--gold); color: #1a1a2e; border-color: var(--gold); font-weight: 600; }

/* ============ 缓存状态 ============ */
.cache-status {
    font-size: 0.8rem; color: var(--text-muted); text-align: right;
    margin-bottom: 10px; min-height: 20px;
}
.cache-status .badge {
    display: inline-block; padding: 2px 10px; border-radius: 10px;
    background: rgba(78, 205, 196, 0.15); color: var(--birth-color);
    border: 1px solid rgba(78, 205, 196, 0.3);
}
.cache-status .badge.server {
    background: rgba(247, 183, 49, 0.15); color: var(--event-color);
    border-color: rgba(247, 183, 49, 0.3);
}

/* ============ 事件列表 ============ */
.events-container { min-height: 300px; }

.event-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius); padding: 20px 24px; margin-bottom: 14px;
    backdrop-filter: blur(10px); transition: all 0.3s;
    animation: cardFadeIn 0.5s ease forwards; opacity: 0;
    position: relative; overflow: hidden;
}
@keyframes cardFadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}
.event-card:hover {
    background: var(--card-hover); border-color: rgba(255, 255, 255, 0.15);
    transform: translateX(4px);
}
.event-card::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
    border-radius: 2px;
}
.event-card.type-1::before { background: var(--event-color); }
.event-card.type-2::before { background: var(--birth-color); }
.event-card.type-3::before { background: var(--death-color); }

.event-header {
    display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap;
}
.event-year {
    font-family: 'Noto Serif SC', serif; font-size: 1.4rem; font-weight: 700;
    color: var(--gold-light); min-width: 80px;
}
.event-year.bc { color: var(--accent-light); }
.event-type-tag {
    font-size: 0.72rem; padding: 2px 10px; border-radius: 10px; font-weight: 500;
}
.event-type-tag.type-1 { background: rgba(247, 183, 49, 0.15); color: var(--event-color); }
.event-type-tag.type-2 { background: rgba(78, 205, 196, 0.15); color: var(--birth-color); }
.event-type-tag.type-3 { background: rgba(233, 69, 96, 0.15); color: var(--death-color); }
.event-data {
    font-size: 0.95rem; line-height: 1.7; color: var(--text); word-break: break-word;
}
.event-link {
    display: inline-block; margin-top: 8px; font-size: 0.82rem; color: var(--gold);
    text-decoration: none; transition: color 0.3s;
}
.event-link:hover { color: var(--gold-light); text-decoration: underline; }

/* ============ 加载与空状态 ============ */
.loading {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.loading-spinner {
    width: 40px; height: 40px; margin: 0 auto 16px;
    border: 3px solid var(--card-border); border-top-color: var(--gold);
    border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.empty-state .icon { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.5; }

.error-state {
    text-align: center; padding: 40px 20px; color: var(--accent-light);
    background: rgba(233, 69, 96, 0.08); border-radius: var(--radius);
    border: 1px solid rgba(233, 69, 96, 0.2);
}

/* ============ 页脚 ============ */
footer {
    position: relative; z-index: 10; text-align: center;
    padding: 30px 20px; color: var(--text-muted); font-size: 0.85rem;
}
.footer-note { margin-top: 4px; font-size: 0.75rem; opacity: 0.7; }

/* ============ 滚动按钮 ============ */
.scroll-btns {
    position: fixed; right: 20px; bottom: 100px; z-index: 100;
    display: flex; flex-direction: column; gap: 8px;
    opacity: 0; transform: translateX(20px); transition: all 0.4s ease;
    pointer-events: none;
}
.scroll-btns.visible {
    opacity: 1; transform: translateX(0); pointer-events: auto;
}
.scroll-btn {
    width: 42px; height: 42px; border-radius: 50%;
    background: var(--card-bg); border: 1px solid var(--card-border);
    color: var(--gold); font-size: 1.1rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.3s; backdrop-filter: blur(10px);
}
.scroll-btn:hover {
    background: var(--gold); color: #1a1a2e; border-color: var(--gold);
    transform: scale(1.08);
}

/* ============ 响应式 ============ */
@media (max-width: 600px) {
    .logo { font-size: 2rem; letter-spacing: 2px; }
    .subtitle { font-size: 0.85rem; }
    .date-selector-inner { flex-direction: column; align-items: stretch; }
    .date-controls { justify-content: center; }
    .event-year { font-size: 1.2rem; min-width: 60px; }
    .event-card { padding: 16px 18px; }
    .container { padding: 0 12px 30px; }
    .scroll-btns { right: 10px; bottom: 80px; }
    .scroll-btn { width: 38px; height: 38px; font-size: 1rem; }
}