/* 武侠风格留言板样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Ma Shan Zheng', 'ZCOOL KuaiLe', '微软雅黑', sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
    color: #e8e8e8;
    overflow-x: hidden;
}

.ancient-bg {
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 200, 255, 0.05) 0%, transparent 50%);
    min-height: 100vh;
    position: relative;
}

.ancient-bg::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="stars" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="0.5" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23stars)"/></svg>');
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 标题区域 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.title {
    font-size: 3.5rem;
    color: #ffd700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 10px;
    background: linear-gradient(45deg, #ffd700, #ffed4e, #ffd700);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.subtitle {
    font-size: 1.2rem;
    color: #b8b8b8;
    margin-bottom: 20px;
}

.decoration {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 2rem;
}

.symbol {
    animation: float 3s ease-in-out infinite;
}

.symbol:nth-child(2) {
    animation-delay: -1s;
}

.symbol:nth-child(3) {
    animation-delay: -2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* 表单区域 */
.message-form-section {
    margin-bottom: 40px;
}

.form-container {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.form-title {
    font-size: 2rem;
    color: #ffd700;
    text-align: center;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #e8e8e8;
    font-weight: bold;
    font-size: 1.1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #e8e8e8;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ffd700;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.char-count {
    text-align: right;
    font-size: 0.9rem;
    color: #999;
    margin-top: 5px;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #1a1a2e;
    border: none;
    border-radius: 10px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

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

/* 警告信息 */
.alert {
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: bold;
}

.alert.success {
    background: rgba(76, 175, 80, 0.2);
    border: 1px solid rgba(76, 175, 80, 0.5);
    color: #81c784;
}

.alert.error {
    background: rgba(244, 67, 54, 0.2);
    border: 1px solid rgba(244, 67, 54, 0.5);
    color: #e57373;
}

/* 留言展示区域 */
.messages-section {
    margin-bottom: 40px;
}

.section-title {
    font-size: 2.5rem;
    color: #ffd700;
    text-align: center;
    margin-bottom: 30px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.messages-container {
    display: grid;
    gap: 20px;
}

.message-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.message-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 215, 0, 0.3);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nickname {
    font-size: 1.2rem;
    font-weight: bold;
    color: #ffd700;
}

.sect-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.message-time {
    color: #999;
    font-size: 0.9rem;
}

.message-content {
    line-height: 1.6;
    margin-bottom: 15px;
    color: #e8e8e8;
    font-size: 1.1rem;
}

.message-footer {
    text-align: right;
}

.message-id {
    color: #666;
    font-size: 0.8rem;
}

.no-messages {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-icon {
    display: block;
    font-size: 3rem;
    margin-top: 20px;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 30px 20px;
    color: #999;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-decoration {
    margin-top: 15px;
    font-size: 1.5rem;
}

.footer-decoration span {
    margin: 0 10px;
    animation: twinkle 2s ease-in-out infinite;
}

.footer-decoration span:nth-child(2) {
    animation-delay: -0.5s;
}

.footer-decoration span:nth-child(3) {
    animation-delay: -1s;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .title {
        font-size: 2.5rem;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .message-header {
        flex-direction: column;
        align-items: flex-start;
    }
}