/* 古诗集样式 - 中国古诗风 */

:root {
    --ink-black: #1a1a1a;
    --vermillion: #c41e3a;
    --rice-white: #f5f0e6;
    --cyan-black: #4a6670;
    --gold: #b8860b;
    --shadow: rgba(26, 26, 26, 0.15);
}

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

body {
    font-family: 'Noto Serif SC', 'SimSun', serif;
    background-color: var(--rice-white);
    color: var(--ink-black);
    min-height: 100vh;
    overflow-x: hidden;
}

/* 背景层 */
.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(180deg, #f8f5ef 0%, #f5f0e6 30%, #e8e0d0 70%, #f0ebe0 100%);
    z-index: -2;
}

.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 15% 85%, rgba(196, 30, 58, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 85% 15%, rgba(74, 102, 112, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(184, 134, 11, 0.03) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 L35 25 L55 30 L35 35 L30 55 L25 35 L5 30 L25 25 Z' fill='none' stroke='%234a6670' stroke-width='0.5' opacity='0.08'/%3E%3C/svg%3E");
    z-index: -1;
}

/* 宣纸纹理叠加 */
.bg-layer::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

/* 头部 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: linear-gradient(180deg, rgba(248,245,239,0.98) 0%, rgba(245,240,230,0.95) 100%);
    border-bottom: 1px solid rgba(74, 102, 112, 0.15);
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 15px rgba(74, 102, 112, 0.08);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
}

.logo {
    font-family: 'ZCOOL XiaoWei', serif;
    font-size: 1.6rem;
    color: var(--ink-black);
    letter-spacing: 0.25em;
    position: relative;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.logo::before,
.logo::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 25px;
    height: 1px;
    background: linear-gradient(90deg, var(--vermillion), transparent);
}

.logo::before {
    right: 100%;
    margin-right: 12px;
}

.logo::after {
    left: 100%;
    margin-left: 12px;
    background: linear-gradient(90deg, transparent, var(--vermillion));
}

/* 古典风格下拉框 */
.category-selector {
    position: relative;
}

.category-selector::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: var(--vermillion);
    border-radius: 2px;
    opacity: 0.6;
}

.category-selector select {
    padding: 10px 45px 10px 25px;
    font-size: 0.95rem;
    font-family: 'Noto Serif SC', serif;
    border: 1px solid rgba(74, 102, 112, 0.3);
    border-radius: 25px;
    background-color: rgba(255, 255, 255, 0.7);
    color: var(--ink-black);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%234a6670' d='M5 7L1 3h8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 18px center;
    transition: all 0.3s ease;
    min-width: 160px;
}

.category-selector select:hover,
.category-selector select:focus {
    border-color: var(--vermillion);
    background-color: rgba(255, 255, 255, 0.95);
    outline: none;
    box-shadow: 0 3px 12px rgba(196, 30, 58, 0.15);
}

/* 下拉选项样式 */
.category-selector select option {
    padding: 12px;
    background: var(--rice-white);
    color: var(--ink-black);
    font-family: 'Noto Serif SC', serif;
    border-bottom: 1px solid rgba(74, 102, 112, 0.1);
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-box input {
    padding: 10px 15px;
    font-size: 0.95rem;
    font-family: 'Noto Serif SC', serif;
    border: 2px solid var(--cyan-black);
    border-radius: 4px;
    background-color: var(--rice-white);
    color: var(--ink-black);
    width: 180px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    border-color: var(--vermillion);
    outline: none;
    box-shadow: 0 2px 10px var(--shadow);
}

.search-box input::placeholder {
    color: var(--cyan-black);
    opacity: 0.7;
}

.search-box button {
    padding: 10px 18px;
    font-size: 0.95rem;
    font-family: 'Noto Serif SC', serif;
    border: 2px solid var(--cyan-black);
    border-radius: 4px;
    background-color: var(--cyan-black);
    color: var(--rice-white);
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-box button:hover {
    background-color: var(--vermillion);
    border-color: var(--vermillion);
}

/* 移动端搜索按钮 */
.search-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--ink-black);
    cursor: pointer;
    border-radius: 4px;
}

.search-toggle:hover {
    background: rgba(74, 102, 112, 0.1);
}

/* 移动端搜索栏 */
.mobile-search {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--rice-white);
    padding: 15px;
    border-bottom: 1px solid rgba(74, 102, 112, 0.2);
    z-index: 99;
}

.mobile-search .search-box {
    display: flex;
    width: 100%;
}

.mobile-search .search-box input {
    flex: 1;
    width: auto;
}

/* 每日一篇 */
.daily-poem {
    padding: 0;
    background: transparent;
    border-radius: 0;
    border: none;
}

.daily-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 12px;
    border-bottom: 1px dashed rgba(196, 30, 58, 0.2);
    gap: 15px;
}

.daily-label {
    font-size: 1rem;
    color: var(--vermillion);
    font-weight: 600;
    letter-spacing: 0.15em;
}

.daily-hint {
    font-size: 0.7rem;
    color: var(--cyan-black);
    opacity: 0.7;
}

.daily-date {
    font-size: 0.8rem;
    color: var(--cyan-black);
}

.daily-content {
    text-align: center;
    padding: 10px 0;
}

.daily-content .poem-title {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--ink-black);
    font-weight: 600;
}

.daily-content .poem-meta {
    font-size: 0.85rem;
    color: var(--cyan-black);
    margin-bottom: 12px;
}

.daily-content .poem-lines {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--ink-black);
    white-space: pre-wrap;
}

.daily-content .loading {
    color: var(--cyan-black);
    font-style: italic;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--ink-black);
    transition: all 0.3s ease;
}

/* 主容器 */
.main-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 90px 30px 30px;
    min-height: 100vh;
    gap: 30px;
}

/* 诗名列表 */
.poem-list {
    width: 280px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 8px;
    border: 1px solid rgba(74, 102, 112, 0.15);
    max-height: calc(100vh - 120px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px var(--shadow);
}

.poem-list-header {
    padding: 20px;
    border-bottom: 1px solid rgba(74, 102, 112, 0.1);
    background: linear-gradient(180deg, rgba(255,255,255,0.8) 0%, transparent 100%);
}

.poem-list-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--cyan-black);
    letter-spacing: 0.2em;
    text-align: center;
}

.poem-items {
    list-style: none;
    overflow-y: auto;
    flex: 1;
    padding: 10px;
}

.poem-items li {
    padding: 14px 16px;
    margin-bottom: 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    position: relative;
}

.poem-items li:hover {
    background: rgba(196, 30, 58, 0.08);
    border-color: rgba(196, 30, 58, 0.2);
    transform: translateX(4px);
}

.poem-items li.active {
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.1) 0%, rgba(196, 30, 58, 0.05) 100%);
    border-color: var(--vermillion);
}

.poem-items li.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--vermillion);
}

.poem-items .poem-title {
    font-size: 1rem;
    color: var(--ink-black);
    margin-bottom: 4px;
}

.poem-items .poem-author {
    font-size: 0.8rem;
    color: var(--cyan-black);
}

.empty-tip {
    text-align: center;
    color: var(--cyan-black);
    padding: 40px 20px;
    font-style: italic;
}

/* 诗词展示区 */
.poem-display {
    flex: 1;
    min-width: 0;
}

.poem-paper {
    background:
        linear-gradient(180deg, rgba(255,254,250,0.97) 0%, rgba(252,250,245,0.95) 100%);
    border-radius: 6px;
    padding: 50px 70px;
    min-height: calc(100vh - 120px);
    box-shadow:
        0 6px 35px var(--shadow),
        inset 0 0 100px rgba(74, 102, 112, 0.02);
    position: relative;
    border: 1px solid rgba(74, 102, 112, 0.08);
}

/* 纸张边缘效果 */
.poem-paper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 6px;
    box-shadow: inset 0 0 30px rgba(0,0,0,0.03);
    pointer-events: none;
}

.poem-paper::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border: 2px solid rgba(74, 102, 112, 0.1);
    border-radius: 4px;
    pointer-events: none;
}

.poem-content {
    position: relative;
    z-index: 1;
}

.poem-content .poem-title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 20px;
    color: var(--ink-black);
    font-weight: 600;
    letter-spacing: 0.3em;
}

.poem-content .poem-meta {
    text-align: center;
    margin-bottom: 40px;
    font-size: 1rem;
    color: var(--cyan-black);
}

.poem-content .poem-meta .dynasty {
    margin-right: 15px;
    padding-right: 15px;
    border-right: 1px solid rgba(74, 102, 112, 0.3);
}

.poem-content .poem-lines {
    font-size: 1.3rem;
    line-height: 2.2;
    text-align: center;
    letter-spacing: 0.2em;
    color: var(--ink-black);
    white-space: pre-wrap;
}

/* 搜索关键词高亮 */
.poem-content mark {
    background-color: rgba(196, 30, 58, 0.2);
    color: var(--vermillion);
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
}

.poem-content .poem-title mark,
.poem-content .poem-author mark {
    background-color: rgba(196, 30, 58, 0.15);
    color: var(--vermillion);
}

/* 欢迎卡片 - 古典设计 */
.welcome-card {
    background: linear-gradient(145deg, rgba(255,252,245,0.95) 0%, rgba(250,247,240,0.9) 100%);
    border-radius: 12px;
    padding: 30px 40px;
    margin-bottom: 25px;
    box-shadow:
        0 4px 25px var(--shadow),
        inset 0 0 60px rgba(74, 102, 112, 0.03);
    border: 1px solid rgba(74, 102, 112, 0.12);
    position: relative;
    overflow: hidden;
}

/* 卡片装饰角 */
.welcome-card::before,
.welcome-card::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px solid var(--vermillion);
    opacity: 0.3;
}

.welcome-card::before {
    top: 10px;
    left: 10px;
    border-right: none;
    border-bottom: none;
}

.welcome-card::after {
    bottom: 10px;
    right: 10px;
    border-left: none;
    border-top: none;
}

.card-header {
    text-align: center;
    margin-bottom: 15px;
}

.card-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.card-tag {
    font-size: 0.75rem;
    color: var(--rice-white);
    background: var(--vermillion);
    padding: 3px 8px;
    border-radius: 3px;
    letter-spacing: 0.1em;
}

.card-header h2 {
    font-size: 1.5rem;
    color: var(--ink-black);
    font-weight: 600;
    letter-spacing: 0.3em;
    font-family: 'ZCOOL XiaoWei', serif;
}

.card-subtitle {
    font-size: 0.9rem;
    color: var(--cyan-black);
    font-style: italic;
}

/* 分割线 */
.card-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 15px 0 20px;
}

.divider-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--vermillion);
    opacity: 0.5;
}

.divider-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan-black), transparent);
    opacity: 0.3;
}

/* 装饰角 - 古典边框 */
.decoration {
    position: fixed;
    width: 80px;
    height: 80px;
    pointer-events: none;
    opacity: 0.25;
    z-index: 0;
}

.decoration.top-left {
    top: 85px;
    left: 25px;
    border-top: 1px solid var(--cyan-black);
    border-left: 1px solid var(--cyan-black);
}

.decoration.top-right {
    top: 85px;
    right: 25px;
    border-top: 1px solid var(--cyan-black);
    border-right: 1px solid var(--cyan-black);
}

.decoration.bottom-left {
    bottom: 25px;
    left: 25px;
    border-bottom: 1px solid var(--cyan-black);
    border-left: 1px solid var(--cyan-black);
}

.decoration.bottom-right {
    bottom: 25px;
    right: 25px;
    border-bottom: 1px solid var(--cyan-black);
    border-right: 1px solid var(--cyan-black);
}

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

.poem-content.animate .poem-title,
.poem-content.animate .poem-meta,
.poem-content.animate .poem-lines {
    animation: fadeIn 0.6s ease forwards;
}

.poem-content.animate .poem-meta {
    animation-delay: 0.1s;
}

.poem-content.animate .poem-lines {
    animation-delay: 0.2s;
}

/* 滚动条样式 */
.poem-items::-webkit-scrollbar,
.poem-paper::-webkit-scrollbar {
    width: 6px;
}

.poem-items::-webkit-scrollbar-track,
.poem-paper::-webkit-scrollbar-track {
    background: rgba(74, 102, 112, 0.05);
    border-radius: 3px;
}

.poem-items::-webkit-scrollbar-thumb,
.poem-paper::-webkit-scrollbar-thumb {
    background: rgba(74, 102, 112, 0.3);
    border-radius: 3px;
}

.poem-items::-webkit-scrollbar-thumb:hover,
.poem-paper::-webkit-scrollbar-thumb:hover {
    background: rgba(74, 102, 112, 0.5);
}

/* 底部版权信息 */
.site-footer {
    text-align: center;
    padding: 40px 20px 30px;
    margin-top: 20px;
}

.footer-text {
    font-size: 1rem;
    letter-spacing: 0.2em;
    font-family: 'ZCOOL XiaoWei', serif;
    padding: 8px 20px;
    border-radius: 4px;
}

.footer-text .char-at {
    color: #999;
    text-shadow: none;
}

.footer-text .char-gold {
    color: #b8860b;
    text-shadow: 0 0 8px rgba(184, 134, 11, 0.4);
}

.footer-text .char-earth {
    color: #8b6914;
    text-shadow: 0 0 8px rgba(139, 105, 20, 0.3);
}

.footer-text .char-water {
    color: #4682b4;
    text-shadow: 0 0 8px rgba(70, 130, 180, 0.4);
}

.footer-text .char-gold {
    color: #b8860b;
    text-shadow: 0 0 8px rgba(184, 134, 11, 0.4);
}

.footer-text .char-earth {
    color: #8b6914;
    text-shadow: 0 0 8px rgba(139, 105, 20, 0.3);
}

.footer-text .char-water {
    color: #4682b4;
    text-shadow: 0 0 8px rgba(70, 130, 180, 0.4);
}

/* 响应式设计 */
@media (max-width: 900px) {
    .header-content {
        padding: 0 20px;
    }

    .logo {
        font-size: 1.4rem;
        letter-spacing: 0.2em;
    }

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

    .menu-toggle {
        display: flex;
    }

    .search-toggle {
        display: flex;
    }

    .search-box {
        display: none;
    }

    .mobile-search {
        display: none;
    }

    .mobile-search.active {
        display: block;
    }

    .main-container {
        padding: 80px 15px 20px;
        flex-direction: column;
    }

    .poem-list {
        width: 100%;
        max-height: none;
        display: none;
    }

    .poem-list.active {
        display: flex;
    }

    .poem-paper {
        padding: 40px 30px;
        min-height: auto;
    }

    .poem-content .poem-title {
        font-size: 1.6rem;
    }

    .poem-content .poem-lines {
        font-size: 1.1rem;
        line-height: 2;
    }

    .decoration {
        display: none;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }

    .category-selector::before {
        display: none;
    }

    .category-selector select {
        padding: 8px 30px 8px 15px;
        font-size: 0.85rem;
        min-width: 120px;
    }

    .poem-paper {
        padding: 30px 20px;
    }

    .poem-content .poem-title {
        font-size: 1.4rem;
        letter-spacing: 0.15em;
    }

    .poem-content .poem-meta {
        font-size: 0.9rem;
    }

    .poem-content .poem-lines {
        font-size: 1rem;
        line-height: 1.8;
    }
}