/* 🎨 Z世代现代化设计风格 */
:root {
    /* 主色调 - 赛博朋克风格 */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --success-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    
    /* 暗色主题 */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-glass: rgba(255, 255, 255, 0.05);
    --bg-glass-hover: rgba(255, 255, 255, 0.1);
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    
    /* 边框和阴影 */
    --border-glass: rgba(255, 255, 255, 0.1);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.4);
    
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 动画 */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

/* 背景动画 */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.nav-brand i {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version {
    background: var(--accent-gradient);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 12px;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem 2rem;
}

/* 主标题 */
.main-header {
    text-align: center;
    margin-bottom: 3rem;
}

.title-gradient {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.title-gradient i {
    animation: rocket-bounce 2s ease-in-out infinite;
}

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

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* 玻璃拟态卡片 */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    box-shadow: var(--shadow-glass);
    transition: var(--transition-smooth);
}

.glass:hover {
    background: var(--bg-glass-hover);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.card {
    margin-bottom: 2rem;
}

.card-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-header h2 i {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-body {
    padding: 2rem;
}

/* 模式切换开关 */
.mode-toggle {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mode-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.toggle-switch {
    position: relative;
    width: 60px;
    height: 30px;
}

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

.toggle-switch label {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-tertiary);
    border-radius: 30px;
    transition: var(--transition-smooth);
}

.toggle-switch label:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background: white;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.toggle-switch input:checked + label {
    background: var(--primary-gradient);
}

.toggle-switch input:checked + label:before {
    transform: translateX(30px);
}

/* 输入网格 */
.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-group label i {
    color: var(--text-secondary);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-suffix {
    position: absolute;
    right: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    pointer-events: none;
}

input[type="number"],
input[type="text"],
textarea,
select {
    width: 100%;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: var(--transition-smooth);
    resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
    min-height: 80px;
    font-family: 'JetBrains Mono', monospace;
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-bounce);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

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

.btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}

.btn-info {
    background: var(--accent-gradient);
    color: white;
}

.btn-danger {
    background: var(--danger-gradient);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

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

/* 动作按钮组 */
.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* 结果网格 */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

/* 状态指示器 */
.status-indicator {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator.manual {
    background: var(--secondary-gradient);
    color: white;
}

.status-indicator.auto {
    background: var(--success-gradient);
    color: white;
}

/* 结果容器 */
.result-container {
    min-height: 200px;
}

.waiting-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-secondary);
}

.waiting-state i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.animated-pulse {
    animation: pulse 2s ease-in-out infinite;
}

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

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-secondary);
}

th {
    background: var(--bg-tertiary);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid var(--border-glass);
    position: relative;
    user-select: none;
    cursor: pointer;
}

th:hover {
    background: rgba(255, 255, 255, 0.05);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-glass);
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* 排序按钮 */
.sort-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    margin-left: 0.5rem;
    padding: 0.25rem;
    border-radius: 6px;
    transition: var(--transition-smooth);
    color: var(--text-secondary);
}

.sort-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* 筛选控件 */
.filter-controls {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.filter-controls > div {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
}

.filter-controls > div > div {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 150px;
}

.filter-controls label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.filter-controls input,
.filter-controls select {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
}

/* 记录统计 */
.record-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* KGR说明区域 */
.formula-section {
    margin-bottom: 2rem;
    text-align: center;
}

.formula {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.formula-label {
    color: var(--text-primary);
}

.fraction {
    display: flex;
    flex-direction: column;
    align-items: center;
    border-left: 2px solid var(--border-glass);
    padding-left: 1rem;
}

.numerator {
    color: #4facfe;
    border-bottom: 2px solid var(--border-glass);
    padding-bottom: 0.25rem;
}

.denominator {
    color: #f093fb;
    padding-top: 0.25rem;
}

.formula-explanation {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 评级网格 */
.rating-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.rating-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    transition: var(--transition-smooth);
}

.rating-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.rating-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.rating-text strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.rating-text span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.rating-item.outstanding { border-left: 4px solid #ffd700; }
.rating-item.exceptional { border-left: 4px solid #ff6b6b; }
.rating-item.very-good { border-left: 4px solid #4ecdc4; }
.rating-item.good { border-left: 4px solid #45b7d1; }
.rating-item.decent { border-left: 4px solid #96ceb4; }
.rating-item.poor { border-left: 4px solid #ff7675; }

/* 浮动助手按钮 */
.floating-helper {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.fab {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-gradient);
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
    transition: var(--transition-bounce);
}

.fab:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 12px 35px rgba(0,0,0,0.4);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #667eea;
    animation: spin 1s ease-in-out infinite;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 5rem 1rem 1rem;
    }
    
    .title-gradient {
        font-size: 2.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .nav-link {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .input-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .filter-controls > div {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-controls > div > div {
        min-width: auto;
    }
    
    .rating-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .header-actions {
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .title-gradient {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .floating-helper {
        bottom: 1rem;
        right: 1rem;
    }
    
    .fab {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 选择文本样式 */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}

/* 焦点样式 */
*:focus {
    outline: 2px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.3s ease-out;
}

.modal.show {
    display: flex !important;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-content {
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    margin: 2rem;
    animation: slideIn 0.3s ease-out;
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    padding: 1rem 2rem;
    border-top: 1px solid var(--border-glass);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* 统计卡片样式 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition-smooth);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-description {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* 重复数据警告 */
.duplicate-warning {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.duplicate-warning i {
    color: #ffc107;
    font-size: 1.25rem;
}

/* 加载容器 */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading-container .loading {
    margin-bottom: 1rem;
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 响应式模态框 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 1rem;
        max-height: 90vh;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .modal-footer {
        flex-direction: column;
    }
}

/* 分页样式 */
.pagination {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-glass);
    border-radius: 12px;
    border: 1px solid var(--border-glass);
}

.pagination .btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pagination .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-tertiary);
}

.pagination .btn:disabled:hover {
    transform: none;
    box-shadow: none;
}