/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body,html {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
    color: #fff;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 背景动画 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(24, 144, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(54, 207, 201, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.dashboard {
    position: relative;
    z-index: 1;
    padding: 20px;
    max-width: 1920px;
    margin: 0 auto;
}

/* 头部样式 */
.header {
    text-align: center;
    margin-bottom: 30px;
    animation: fadeInDown 1s ease-out;
}

.header h1 {
    font-size: clamp(24px, 4vw, 48px);
    background: linear-gradient(90deg, #1890ff, #36cfc9, #1890ff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient 3s linear infinite;
    text-shadow: 0 0 30px rgba(24, 144, 255, 0.5);
    margin-bottom: 10px;
}

.header .time {
    font-size: clamp(14px, 2vw, 20px);
    color: #8ec5fc;
    letter-spacing: 2px;
}

/* 核心指标卡片 */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.metric-card {
    background: linear-gradient(135deg, rgba(24, 144, 255, 0.1), rgba(54, 207, 201, 0.1));
    border: 1px solid rgba(24, 144, 255, 0.3);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(24, 144, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.metric-card:hover::before {
    opacity: 1;
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(24, 144, 255, 0.3);
    border-color: rgba(24, 144, 255, 0.6);
}

.metric-card .icon {
    font-size: 36px;
    margin-bottom: 10px;
    display: block;
}

.metric-card .label {
    font-size: 14px;
    color: #8ec5fc;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.metric-card .value {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: bold;
    background: linear-gradient(90deg, #fff, #8ec5fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 5px;
}

.metric-card .trend {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.trend.up { color: #52c41a; }
.trend.down { color: #ff4d4f; }

/* 图表区域 */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background: rgba(26, 31, 58, 0.8);
    border: 1px solid rgba(24, 144, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    backdrop-filter: blur(10px);
    animation: fadeInUp 1s ease-out 0.4s both;
    transition: all 0.3s ease;
}

.chart-card:hover {
    border-color: rgba(24, 144, 255, 0.5);
    box-shadow: 0 5px 20px rgba(24, 144, 255, 0.2);
}

.chart-card.wide {
    grid-column: span 2;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(24, 144, 255, 0.2);
}

.chart-title {
    font-size: 18px;
    font-weight: bold;
    color: #8ec5fc;
    display: flex;
    align-items: center;
    gap: 10px;
}

.chart-title::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(180deg, #1890ff, #36cfc9);
    border-radius: 2px;
}

.chart-content {
    height: 350px;
}

/* 底部表格 */
.table-container {
    background: rgba(26, 31, 58, 0.8);
    border: 1px solid rgba(24, 144, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: rgba(24, 144, 255, 0.2);
    padding: 15px;
    text-align: left;
    color: #8ec5fc;
    font-weight: normal;
    border-bottom: 2px solid rgba(24, 144, 255, 0.3);
}

.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.3s ease;
}

.data-table tr:hover td {
    background: rgba(24, 144, 255, 0.1);
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.status-badge.success { background: rgba(82, 196, 26, 0.2); color: #52c41a; }
.status-badge.warning { background: rgba(250, 173, 20, 0.2); color: #faad14; }
.status-badge.danger { background: rgba(255, 77, 79, 0.2); color: #ff4d4f; }

/* 动画定义 */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes gradient {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

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

/* 登录页面样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
    position: relative;
    overflow: hidden;
}

/* 背景动画 */
.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(24, 144, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(54, 207, 201, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(147, 84, 255, 0.1) 0%, transparent 50%);
    animation: loginBgMove 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes loginBgMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(5%, 5%) rotate(5deg); }
    50% { transform: translate(-3%, 10%) rotate(-3deg); }
    75% { transform: translate(8%, -5%) rotate(8deg); }
}

.login-box {
    background: rgba(26, 31, 58, 0.95);
    border: 1px solid rgba(24, 144, 255, 0.4);
    border-radius: 20px;
    padding: 50px 45px;
    width: 90%;
    max-width: 420px;
    backdrop-filter: blur(20px);
    box-shadow: 
        0 8px 32px rgba(24, 144, 255, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    animation: loginBoxFadeIn 0.8s ease-out;
    position: relative;
    z-index: 1;
}

@keyframes loginBoxFadeIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 标题样式 */
.login-box h2 {
    text-align: center;
    margin-bottom: 35px;
    background: linear-gradient(90deg, #1890ff, #36cfc9, #1890ff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient 3s linear infinite;
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 2px;
}

@keyframes gradient {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* 表单组 */
.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #8ec5fc;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(24, 144, 255, 0.2);
    border-radius: 10px;
    color: #fff;
    font-size: 15px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: #1890ff;
    background: rgba(24, 144, 255, 0.05);
    box-shadow: 0 0 15px rgba(24, 144, 255, 0.2);
}

.form-group input:focus + label {
    color: #1890ff;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.25);
    font-size: 14px;
}

/* 登录按钮 */
.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #1890ff 0%, #36cfc9 100%);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.login-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 ease;
}

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

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(24, 144, 255, 0.4);
}

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

/* 错误提示 */
.login-error {
    color: #ff4d4f;
    font-size: 14px;
    margin-top: 15px;
    text-align: center;
    display: none;
    padding: 10px;
    background: rgba(255, 77, 79, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(255, 77, 79, 0.3);
    animation: errorShake 0.5s ease;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* 响应式设计 - 登录页面 */
@media (max-width: 480px) {
    .login-box {
        padding: 35px 25px;
        margin: 20px;
    }
    
    .login-box h2 {
        font-size: 22px;
        margin-bottom: 25px;
    }
    
    .form-group input {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .login-btn {
        padding: 12px;
        font-size: 15px;
    }
}

/* 响应式设计 - 平板 */
@media (max-width: 1024px) {
    .charts-container {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    .chart-card.wide { grid-column: span 1; }
}

/* 响应式设计 - 手机横屏 */
@media (max-width: 768px) {
    .dashboard { padding: 10px; }
    .metrics-row { 
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 15px;
    }
    .charts-container { 
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .chart-content { height: 300px; }
    .metric-card { padding: 20px; }
    .metric-card .icon { font-size: 28px; }
    
    /* 表格响应式 */
    .table-container { overflow-x: auto; }
    .data-table { 
        font-size: 13px;
        min-width: 600px;
    }
    .data-table th, .data-table td { padding: 10px 8px; }
}

/* 响应式设计 - 手机竖屏 */
@media (max-width: 480px) {
    .header h1 { font-size: 20px; }
    .header .time { font-size: 12px; }
    .metrics-row { 
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .metric-card { 
        padding: 15px;
        display: flex;
        align-items: center;
        gap: 15px;
    }
    .metric-card .icon { 
        font-size: 24px;
        margin-bottom: 0;
    }
    .metric-card .label { 
        font-size: 12px;
        margin-bottom: 5px;
    }
    .metric-card .value { 
        font-size: 20px;
        margin-bottom: 0;
    }
    .metric-card .trend { 
        font-size: 12px;
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
    }
    .chart-content { height: 250px; }
    .chart-title { font-size: 15px; }
    .chart-header { margin-bottom: 15px; padding-bottom: 10px; }
}