/* ===========================================
   四姐妹运势站 - 命运占卜屋
   暗色星空主题 · 水晶球风格 · 无框架
   =========================================== */

/* ── 基础重置 ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --cortana: #4FC3F7;
    --serenna: #F48FB1;
    --yuna: #FFB74D;
    --echo: #CE93D8;
    --gold: #D4A843;
    --gold-light: #F0D68A;
    --bg-dark: #0B0719;
    --bg-card: rgba(255, 255, 255, 0.05);
    --text-primary: #F0E6D0;
    --text-secondary: rgba(240, 230, 208, 0.7);
    --text-muted: rgba(240, 230, 208, 0.4);
    --font-header: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
    --font-body: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    --radius: 16px;
    --radius-sm: 8px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ── 星空背景 ── */
.starry-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse at 80% 20%, rgba(74, 48, 120, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 80%, rgba(100, 70, 150, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(30, 15, 60, 0.4) 0%, transparent 70%);
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: twinkle var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes twinkle {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

/* ── 页面布局 ── */
.page {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px 60px;
}

/* ── 页头 ── */
.header {
    text-align: center;
    padding: 60px 0 50px;
}

.header h1 {
    font-family: var(--font-header);
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: 8px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.header h1::after {
    content: "";
    display: block;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    margin: 16px auto 0;
}

.header .subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 14px;
    letter-spacing: 4px;
}

.header .update-info {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* ── 姐妹选择区 ── */
.sisters-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 40px 0;
}

.sister-card {
    position: relative;
    cursor: pointer;
    text-align: center;
    padding: 30px 16px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}

.sister-card:hover {
    transform: translateY(-6px);
    border-color: var(--sister-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 20px var(--sister-glow);
}

.sister-card:active {
    transform: translateY(-2px);
}

/* 水晶球 */
.crystal-ball {
    width: 90px;
    height: 90px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: radial-gradient(
        circle at 35% 30%,
        rgba(255, 255, 255, 0.15),
        var(--sister-color) 40%,
        rgba(0, 0, 0, 0.4) 80%
    );
    box-shadow:
        inset 0 0 20px rgba(255, 255, 255, 0.1),
        0 0 30px var(--sister-glow),
        0 4px 15px rgba(0, 0, 0, 0.3);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    animation: float 3s ease-in-out infinite;
    animation-delay: var(--float-delay, 0s);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.crystal-ball::after {
    content: "";
    position: absolute;
    top: 12%;
    left: 22%;
    width: 30%;
    height: 20%;
    background: radial-gradient(
        ellipse at center,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    border-radius: 50%;
    transform: rotate(-20deg);
}

.crystal-ball .initial {
    font-family: var(--font-header);
    font-size: 1.8rem;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.sister-card .name {
    font-family: var(--font-header);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--sister-color);
}

.sister-card .style-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.sister-card .theme-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 8px;
    padding: 3px 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    display: inline-block;
}

/* 选中状态 */
.sister-card.active {
    transform: translateY(-8px);
    border-color: var(--sister-color);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px var(--sister-glow);
}

.sister-card.active .crystal-ball {
    box-shadow:
        inset 0 0 30px rgba(255, 255, 255, 0.2),
        0 0 50px var(--sister-glow),
        0 4px 20px rgba(0, 0, 0, 0.4);
}

/* ── 运势展示区 ── */
.fortune-display {
    margin: 30px 0;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    display: none;
}

.fortune-display.visible {
    opacity: 1;
    transform: translateY(0);
    display: block;
}

.fortune-card {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.06),
        rgba(255, 255, 255, 0.02)
    );
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.fortune-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--sister-color);
    box-shadow: 0 0 15px var(--sister-glow);
}

.fortune-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.fortune-header .mini-ball {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: radial-gradient(
        circle at 35% 30%,
        rgba(255, 255, 255, 0.2),
        var(--sister-color) 40%
    );
    box-shadow: 0 0 20px var(--sister-glow);
    flex-shrink: 0;
}

.fortune-header .fortune-meta h2 {
    font-family: var(--font-header);
    font-size: 1.3rem;
    color: var(--sister-color);
}

.fortune-header .fortune-meta .date-tag {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* 运势内容网格 */
.fortune-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.fortune-item {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--sister-color);
}

.fortune-item .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.fortune-item .value {
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.5;
}

.fortune-item.full-width {
    grid-column: 1 / -1;
}

/* 运势评分星级 */
.stars {
    color: var(--gold);
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.stars .empty {
    color: rgba(255, 255, 255, 0.15);
}

/* 幸运物特殊展示 */
.lucky-items {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.lucky-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--sister-color);
    color: var(--sister-color);
    background: rgba(255, 255, 255, 0.05);
}

/* 箴言区 */
.fortune-message {
    grid-column: 1 / -1;
    margin-top: 8px;
    padding: 20px;
    text-align: center;
    font-family: var(--font-header);
    font-size: 1.1rem;
    color: var(--sister-color);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    line-height: 1.8;
    font-style: italic;
}

/* ── 加载状态 ── */
.loading {
    text-align: center;
    padding: 60px;
    color: var(--text-muted);
}

.loading .spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 16px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ── 页脚 ── */
.footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 2px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    margin-top: 40px;
}

.footer .separator {
    color: rgba(255, 255, 255, 0.1);
    margin: 0 12px;
}

/* ── 响应式 ── */
@media (max-width: 900px) {
    .sisters-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .header h1 {
        font-size: 2rem;
    }
    .fortune-body {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .sisters-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .sister-card {
        padding: 20px 12px;
    }
    .crystal-ball {
        width: 70px;
        height: 70px;
    }
    .fortune-card {
        padding: 24px;
    }
    .header h1 {
        font-size: 1.6rem;
        letter-spacing: 4px;
    }
}

/* ── 装饰分隔线 ── */
.divider {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 4px;
    margin: 20px 0;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
}

/* ── 错误态 ── */
.error-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    background: rgba(255, 0, 0, 0.05);
    border: 1px solid rgba(255, 0, 0, 0.1);
    border-radius: var(--radius);
}

.error-state .error-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.error-state .retry-btn {
    display: inline-block;
    margin-top: 16px;
    padding: 8px 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    background: transparent;
    font-family: var(--font-body);
    font-size: 0.85rem;
    transition: all 0.3s;
}

.error-state .retry-btn:hover {
    border-color: var(--gold);
    color: var(--gold);
}