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

:root {
    /* 浅色模式 */
    --primary-color: #4a90e2;
    --secondary-color: #50e3c2;
    --background-color: #f8f9fa;
    --card-background: rgba(255, 255, 255, 0.7);
    --card-background-dark: rgba(30, 30, 30, 0.7);
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: rgba(255, 255, 255, 0.3);
    --border-color-dark: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #4caf50;
    --error-color: #f44336;
    --warning-color: #ff9800;
    
    /* 波浪 */
    --wave-color-1: rgba(74, 144, 226, 0.1);
    --wave-color-2: rgba(80, 227, 194, 0.1);
    --wave-color-3: rgba(74, 144, 226, 0.05);
    --wave-color-4: rgba(80, 227, 194, 0.05);
    
    /* 夜间模式波浪 */
    --wave-color-dark-1: rgba(100, 181, 246, 0.15);
    --wave-color-dark-2: rgba(77, 208, 225, 0.15);
    --wave-color-dark-3: rgba(100, 181, 246, 0.08);
    --wave-color-dark-4: rgba(77, 208, 225, 0.08);
    
    /* 过渡动画 */
    --transition-speed: 0.3s;
    --transition-easing: ease-in-out;
}

/* 夜间模式 */
body.dark-mode {
    --primary-color: #64b5f6;
    --secondary-color: #4dd0e1;
    --background-color: #121212;
    --card-background: var(--card-background-dark);
    --text-color: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: var(--border-color-dark);
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    /* 波浪 */
    --wave-color-1: var(--wave-color-dark-1);
    --wave-color-2: var(--wave-color-dark-2);
    --wave-color-3: var(--wave-color-dark-3);
    --wave-color-4: var(--wave-color-dark-4);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-speed) var(--transition-easing),
                color var(--transition-speed) var(--transition-easing);
    overflow-x: hidden;
    position: relative;
}

/* 波浪效果 */
.waves-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    perspective: 1000px;
    background: linear-gradient(135deg, 
        var(--background-color) 0%, 
        rgba(74, 144, 226, 0.1) 50%, 
        var(--background-color) 100%);
}

body.dark-mode .waves-container {
    background: linear-gradient(135deg, 
        var(--background-color) 0%, 
        rgba(100, 181, 246, 0.15) 50%, 
        var(--background-color) 100%);
}

.wave {
    position: absolute;
    width: 200%;
    height: 200px;
    background: var(--wave-color-1);
    animation: wave-animation 20s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center bottom;
    opacity: 0.8;
    border-radius: 50% 50% 0 0;
    filter: blur(2px);
}

.wave-1 {
    background: var(--wave-color-1);
    bottom: 0;
    left: 0;
    animation-duration: 30s;
    animation-delay: 0s;
    transform: translateX(0) translateY(0) rotateX(10deg);
    height: 150px;
}

.wave-2 {
    background: var(--wave-color-2);
    bottom: 50px;
    left: 0;
    animation-duration: 25s;
    animation-delay: -8s;
    transform: translateX(0) translateY(0) rotateX(15deg);
    height: 180px;
    opacity: 0.6;
}

.wave-3 {
    background: var(--wave-color-3);
    bottom: 100px;
    left: 0;
    animation-duration: 20s;
    animation-delay: -16s;
    transform: translateX(0) translateY(0) rotateX(20deg);
    height: 200px;
    opacity: 0.4;
}

.wave-4 {
    background: var(--wave-color-4);
    bottom: 150px;
    left: 0;
    animation-duration: 15s;
    animation-delay: -24s;
    transform: translateX(0) translateY(0) rotateX(25deg);
    height: 220px;
    opacity: 0.2;
}

@keyframes wave-animation {
    0% {
        transform: translateX(0) translateY(0) rotateX(15deg) scale(1);
        border-radius: 50% 50% 0 0;
    }
    25% {
        transform: translateX(-12.5%) translateY(-5px) rotateX(15deg) scale(1.05);
        border-radius: 45% 55% 0 0;
    }
    50% {
        transform: translateX(-25%) translateY(-10px) rotateX(15deg) scale(1.1);
        border-radius: 55% 45% 0 0;
    }
    75% {
        transform: translateX(-37.5%) translateY(-5px) rotateX(15deg) scale(1.05);
        border-radius: 50% 50% 0 0;
    }
    100% {
        transform: translateX(-50%) translateY(0) rotateX(15deg) scale(1);
        border-radius: 45% 55% 0 0;
    }
}

/* 呼吸 */
.container {
    animation: breathe-animation 10s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    transform-origin: center;
    perspective: 1000px;
}

@keyframes breathe-animation {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    25% {
        transform: translateY(-5px) scale(1.01);
    }
    50% {
        transform: translateY(-10px) scale(1.02);
    }
    75% {
        transform: translateY(-5px) scale(1.01);
    }
}

/* 容器和布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 标题 */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: all var(--transition-speed) var(--transition-easing);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

header h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 600;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 内容 */
main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
}

/* 卡片 */
.control-panel, .result-section, .history-section, .settings-section {
    background-color: var(--card-background);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: all var(--transition-speed) var(--transition-easing);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

/* 结果 */
.results-text {
    background-color: var(--background-color);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: 1rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
    transition: all var(--transition-speed) var(--transition-easing);
    cursor: pointer;
    backdrop-filter: blur(5px);
}

.results-text:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* 区域标题 */
h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
}

/* 控制面板 */
.input-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.input-item {
    display: flex;
    flex-direction: column;
}

.input-item label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.input-item input,
.input-item select {
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: all var(--transition-speed) var(--transition-easing);
    outline: none;
    backdrop-filter: blur(5px);
}

.input-item select {
    cursor: pointer;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 width=%22292.4%22 height=%22292.4%22%3E%3Cpath fill=%22%23007CB2%22 d=%22M287 69.4a17.6 17.6 0 0 0-13-5.4H18.4c-5 0-9.3 1.8-12.9 5.4A17.6 17.6 0 0 0 0 82.2c0 5 1.8 9.3 5.4 12.9l128 127.9c3.6 3.6 7.8 5.4 12.8 5.4s9.2-1.8 12.8-5.4L287 95c3.5-3.5 5.4-7.8 5.4-12.8 0-5-1.9-9.2-5.5-12.8z%22/%3E%3C/svg%3E');
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 12px;
    padding-right: 35px;
}

.input-item select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.input-item select:hover {
    border-color: var(--primary-color);
}

.input-item input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.input-item input.error {
    border-color: var(--error-color);
}

/* 生成按钮 */
.generate-section {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.generate-btn {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-easing);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.generate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.generate-btn:active:not(:disabled) {
    transform: translateY(0);
}

.generate-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* 转盘 */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
}

.spinner.active {
    display: block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 结果显示 */
.result-container {
    min-height: 100px;
    padding: 20px;
    background-color: var(--background-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) var(--transition-easing);
}

.no-result, .no-history {
    color: var(--text-secondary);
    text-align: center;
    font-style: italic;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 12px;
    margin-top: 15px;
}

.result-item {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    animation: fadeInUp 0.5s var(--transition-easing);
    transition: all var(--transition-speed) var(--transition-easing);
    cursor: pointer;
}

.result-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 历史记录 */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.clear-btn {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-easing);
}

.clear-btn:hover {
    background-color: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.history-container {
    max-height: 300px;
    overflow-y: auto;
    padding-right: 10px;
}

/* 自定义滚动条 */
.history-container::-webkit-scrollbar {
    width: 8px;
}

.history-container::-webkit-scrollbar-track {
    background: var(--background-color);
    border-radius: 4px;
}

.history-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.history-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.history-item {
    background-color: var(--background-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-speed) var(--transition-easing);
}

.history-item:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.history-time {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 8px;
    font-style: italic;
}

.history-values {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.history-value {
    background-color: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 设置区域样式 */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background-color: var(--background-color);
    border-radius: 8px;
    transition: all var(--transition-speed) var(--transition-easing);
}

.setting-item:hover {
    box-shadow: 0 2px 8px var(--shadow-color);
}

.setting-item label {
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
}

/* 开关组件 */
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: var(--transition-speed) var(--transition-easing);
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition-speed) var(--transition-easing);
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* 文件上传 */
.file-upload {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
}

.upload-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-easing);
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-block;
}

.upload-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-1px);
}

.file-name {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
}

/* 页脚 */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: all var(--transition-speed) var(--transition-easing);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .input-group {
        grid-template-columns: 1fr;
    }
    
    .generate-btn {
        padding: 14px 35px;
        font-size: 1rem;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .history-container {
        max-height: 250px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    .control-panel, .result-section, .history-section, .settings-section {
        padding: 20px;
    }
}

/* 复制成功提示 */
.copy-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--success-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 1000;
    animation: slideInRight 0.3s var(--transition-easing),
               fadeOut 0.3s var(--transition-easing) 2.5s forwards;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* 错误提示 */
.error-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--error-color);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 1000;
    animation: slideInRight 0.3s var(--transition-easing),
               fadeOut 0.3s var(--transition-easing) 2.5s forwards;
}

/* 用户协议弹窗样式 */
.terms-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s var(--transition-easing) forwards;
}

.terms-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(2px);
}

.terms-content {
    position: relative;
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: slideInUp 0.3s var(--transition-easing) forwards;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.terms-content h2 {
    margin: 0;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.5rem;
    color: var(--primary-color);
}

.terms-scroll {
    padding: 25px;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
    line-height: 1.8;
    font-size: 0.95rem;
    color: var(--text-color);
}

.terms-scroll h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.terms-scroll p {
    margin: 8px 0;
}

.terms-scroll strong {
    color: var(--primary-color);
}

.terms-actions {
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    background-color: rgba(0, 0, 0, 0.02);
    border-radius: 0 0 12px 12px;
}

.terms-accept {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-easing);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.terms-accept:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.terms-accept:active {
    transform: translateY(0);
}

/* 协议弹窗动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 隐藏协议弹窗 */
.terms-modal.hidden {
    display: none;
}