/* ==================== 全局样式 ==================== */
:root {
    --primary-color: #8B0000;      /* 深红 */
    --accent-color: #C9A227;      /* 金色 */
    --success-color: #2D5016;    /* 墨绿 */
    --warning-color: #B8860B;    /* 暗金 */
    --danger-color: #5C0000;     /* 暗红 */
    --bg-color: #F5F0E8;          /* 米黄宣纸色 */
    --card-bg: #FFFEF7;           /* 象牙白 */
    --text-color: #2C2C2C;       /* 墨黑 */
    --border-color: #D4C5A9;     /* 古铜 */
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
}

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

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Serif CJK SC", serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 宣纸纹理背景 */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(ellipse at 20% 30%, rgba(200,180,140,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(180,150,100,0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ==================== 容器 ==================== */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px 24px;
    width: 100%;
}

/* ==================== 页面头部 ==================== */
.header {
    background: linear-gradient(180deg, var(--primary-color) 0%, #6B0000 100%);
    color: var(--accent-color);
    padding: 48px 0 40px;
    text-align: center;
    position: relative;
    box-shadow: 0 4px 20px rgba(139,0,0,0.3);
}

.header::before,
.header::after {
    content: '☯';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    opacity: 0.4;
}
.header::before { left: 24px; }
.header::after { right: 24px; }

.header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    margin-bottom: 8px;
    color: #FFE4B5;
}

.header .subtitle {
    font-size: 1.1rem;
    opacity: 0.85;
    letter-spacing: 0.3em;
    font-style: italic;
}

.visit-count {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-top: 10px;
    letter-spacing: 0.05em;
}

/* ==================== 主内容区 ==================== */
main {
    flex: 1;
    padding-bottom: 60px;
}

/* ==================== 事项选择 ==================== */
.matter-section {
    text-align: center;
    margin: 28px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.matter-label {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

.matter-select {
    padding: 12px 24px;
    font-size: 1rem;
    color: var(--text-color);
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238B0000' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    min-width: 200px;
}

.matter-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(201,162,39,0.2);
}

.matter-select:hover {
    border-color: var(--accent-color);
}

/* ==================== 起卦按钮区 ==================== */
.divination-section {
    text-align: center;
    margin: 48px 0;
}

.divination-btn {
    display: inline-block;
    padding: 18px 72px;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: #FFF8E7;
    background: linear-gradient(135deg, var(--primary-color), #A50000);
    border: 2px solid var(--accent-color);
    border-radius: 4px;
    cursor: pointer;
    box-shadow:
        0 4px 16px rgba(139,0,0,0.25),
        inset 0 1px 0 rgba(255,255,255,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.divination-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

.divination-btn:hover::before {
    left: 100%;
}

.divination-btn:hover {
    transform: translateY(-2px);
    box-shadow:
        0 6px 24px rgba(139,0,0,0.35),
        inset 0 1px 0 rgba(255,255,255,0.15);
    background: linear-gradient(135deg, #A50000, var(--primary-color));
}

.divination-btn:active {
    transform: translateY(0);
}

.divination-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ==================== 卡片样式 ==================== */
.card {
    background: var(--card-bg);
    border-radius: 4px;
    padding: 24px 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    position: relative;
    transition: box-shadow 0.3s ease;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color), var(--accent-color));
    border-radius: 4px 4px 0 0;
}

.card:hover {
    box-shadow: var(--shadow-hover);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--primary-color);
    letter-spacing: 0.1em;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* ==================== 时间信息 ==================== */
.time-info p {
    margin: 8px 0;
    font-size: 1rem;
    color: #555;
}

.time-info strong {
    color: var(--primary-color);
    margin-right: 10px;
    font-weight: 600;
}

/* ==================== 卦象结果 ==================== */
.gua-result {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.liushen-item {
    padding: 18px 20px;
    background: #FDFBF5;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    transition: all 0.3s ease;
}

.liushen-item:hover {
    background: #FAF6ED;
    transform: translateX(6px);
    box-shadow: var(--shadow);
}

.liushen-item.main {
    border-left-color: var(--primary-color);
    background: #FDF8F0;
    border-left-width: 5px;
}

.liushen-item.main:hover {
    background: #FBF3E8;
}

.liushen-label {
    font-size: 0.85rem;
    color: #888;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.liushen-name {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    letter-spacing: 0.15em;
}

.liushen-item.main .liushen-name {
    color: var(--danger-color);
}

.liushen-details {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed var(--border-color);
}

.liushen-details p {
    margin: 5px 0;
    font-size: 0.95rem;
    color: #555;
}

.liushen-details strong {
    color: #666;
    font-weight: 600;
}

/* ==================== 吉凶标签 ==================== */
.jixiong-container {
    text-align: center;
    padding: 24px 0;
}

.jixiong-badge {
    display: inline-block;
    padding: 10px 36px;
    border-radius: 2px;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.3em;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.jixiong-badge.吉,
.jixiong-badge.大吉 {
    background: linear-gradient(135deg, var(--success-color), #3D6B1E);
    color: #E8F5E0;
    border: 1px solid #4A7A28;
}

.jixiong-badge.小吉 {
    background: linear-gradient(135deg, #5A7A3A, #4A6A2A);
    color: #E8F5E0;
    border: 1px solid #6A8A3A;
}

.jixiong-badge.平 {
    background: linear-gradient(135deg, #8B7355, #7A6345);
    color: #FFF8E7;
    border: 1px solid #9B8365;
}

.jixiong-badge.凶,
.jixiong-badge.大凶 {
    background: linear-gradient(135deg, var(--danger-color), #4A0000);
    color: #FFE4E4;
    border: 1px solid #6B1010;
}

/* ==================== 解读文本 ==================== */
.analysis-text,
.advice-text {
    font-size: 1rem;
    line-height: 1.9;
    color: #444;
    padding: 14px 16px;
    background: #FDFBF5;
    border-radius: 4px;
    border: 1px solid #E8E0D0;
}

.advice-text {
    background: #FFFDF5;
    border-left: 4px solid var(--accent-color);
    font-style: italic;
}

/* ==================== AI 解读 ==================== */
#ai-section {
    background: linear-gradient(135deg, #FFFEF7, #F8F4EC);
    padding: 8px 0;
}

#ai-section::before {
    background: linear-gradient(90deg, #6B4600, #C9A227, #6B4600);
}

#ai-section .card-title {
    color: #8B6914;
}

.ai-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 32px 24px;
    color: #888;
    font-size: 0.95rem;
}

.ai-spinner {
    width: 22px;
    height: 22px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

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

.ai-result {
    font-size: 1rem;
    line-height: 2;
    color: #3A3A3A;
}

.ai-content {
    padding: 8px 4px;
    line-height: 1.8;
}

.ai-content h1,
.ai-content h2,
.ai-content h3 {
    margin: 1.2em 0 0.6em;
    color: var(--primary-color);
}

.ai-content h1:first-child,
.ai-content h2:first-child,
.ai-content h3:first-child {
    margin-top: 0;
}

.ai-content p {
    margin: 0.6em 0;
}

.ai-content ul,
.ai-content ol {
    margin: 0.6em 0;
    padding-left: 1.5em;
}

.ai-content li {
    margin: 0.3em 0;
}

.ai-content blockquote {
    margin: 1em 0;
    padding: 0.8em 1em;
    background: #F5EFE0;
    border-left: 3px solid var(--accent-color);
    border-radius: 0 4px 4px 0;
    font-style: italic;
}

.ai-content strong {
    color: var(--primary-color);
}

.ai-content hr {
    border: none;
    border-top: 1px dashed var(--border-color);
    margin: 1.2em 0;
}

.ai-error {
    color: var(--danger-color);
    font-size: 0.9rem;
    padding: 14px;
    background: #FEF2F2;
    border-radius: 4px;
    border: 1px solid #E8C0C0;
}

/* ==================== 历史记录 ==================== */
.history-section {
    margin-top: 48px;
}

.history-toggle-btn {
    display: block;
    width: 100%;
    max-width: 260px;
    margin: 0 auto 20px;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.1em;
}

.history-toggle-btn:hover {
    background: var(--primary-color);
    color: #FFE4B5;
    border-color: var(--primary-color);
}

.history-list {
    background: var(--card-bg);
    border-radius: 4px;
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.history-item {
    padding: 16px 18px;
    margin-bottom: 12px;
    background: #FDFBF5;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.history-item:hover {
    background: #FAF6ED;
    transform: translateX(4px);
}

.history-item-info {
    flex: 1;
}

.history-item-time {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 4px;
}

.history-item-result {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.history-item-delete {
    padding: 6px 14px;
    font-size: 0.85rem;
    color: #888;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.history-item-delete:hover {
    background: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
}

/* ==================== 页面底部 ==================== */
.footer {
    background: var(--primary-color);
    color: rgba(255,228,181,0.7);
    text-align: center;
    padding: 24px;
    margin-top: auto;
    letter-spacing: 0.1em;
}

.footer p {
    margin: 0;
    font-size: 0.9rem;
}

.github-link {
    color: rgba(255,228,181,0.85);
    text-decoration: none;
    transition: color 0.3s ease;
}

.github-link:hover {
    color: #FFE4B5;
}

/* ==================== 工具类 ==================== */
.hidden {
    display: none !important;
}

/* ==================== 动画效果 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

.pulse {
    animation: pulse 1.2s ease-in-out infinite;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .header .subtitle {
        font-size: 0.95rem;
        letter-spacing: 0.2em;
    }

    .header::before,
    .header::after {
        display: none;
    }

    .matter-section {
        flex-direction: column;
        gap: 10px;
    }

    .matter-select {
        width: 100%;
    }

    .divination-btn {
        width: 100%;
        padding: 16px 40px;
        font-size: 1.2rem;
    }

    .card {
        padding: 18px 16px;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .liushen-name {
        font-size: 1.4rem;
    }

    .jixiong-badge {
        font-size: 1.2rem;
        padding: 8px 28px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 16px;
    }

    .header {
        padding: 36px 0 32px;
    }

    .header h1 {
        font-size: 1.8rem;
    }
}