/**
 * 全新UI风格 - 翠绿科技主题
 * 清新现代 + 动感流畅
 */

:root {
    /* 翠绿科技配色 */
    --primary-green: #00ff88;
    --primary-cyan: #00d9ff;
    --accent-purple: #9d4edd;
    --accent-orange: #ff6b35;

    /* 霓虹光效 */
    --neon-green: #39ff14;
    --neon-cyan: #00ffff;
    --neon-blue: #4cc9f0;

    /* 深紫渐变背景系统 */
    --bg-dark: #1a0b2e;
    --bg-darker: #0f0520;
    --bg-card: rgba(38, 16, 68, 0.85);

    /* 玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(0, 255, 136, 0.2);

    /* 阴影系统 */
    --shadow-green: 0 8px 32px rgba(0, 255, 136, 0.15);
    --shadow-cyan: 0 8px 32px rgba(0, 217, 255, 0.15);
    --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.6);

    /* 文字颜色 */
    --text-bright: #ffffff;
    --text-normal: rgba(255, 255, 255, 0.9);
    --text-muted: rgba(255, 255, 255, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, var(--bg-darker) 0%, #16213e 25%, #2d1b4e 50%, #1a0b2e 100%);
    color: var(--text-bright);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 动态背景网格 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* 粒子容器 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: particle-float 25s infinite ease-in-out;
}

@keyframes particle-float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0;
    }

    10% {
        opacity: 0.8;
    }

    50% {
        transform: translate(var(--tx), var(--ty)) scale(1.2);
        opacity: 1;
    }

    90% {
        opacity: 0.8;
    }
}

/* 主容器 */
.container {
    position: relative;
    z-index: 2;
    max-width: 1300px;
    margin: 0 auto;
    padding: 50px 20px;
    min-height: 100vh;
}

/* 头部区域 */
.header {
    text-align: center;
    margin-bottom: 50px;
    animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    font-size: 80px;
    margin-bottom: 20px;
    animation: logo-rotate 4s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.6));
}

@keyframes logo-rotate {

    0%,
    100% {
        transform: rotate(0deg) scale(1);
    }

    50% {
        transform: rotate(10deg) scale(1.1);
    }
}

.title {
    font-size: 42px;
    font-weight: 900;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-cyan), var(--accent-purple));
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    animation: gradient-wave 4s ease infinite;
}

@keyframes gradient-wave {

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

    50% {
        background-position: 100% 50%;
    }
}

.subtitle {
    font-size: 16px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* 状态消息 */
.status-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 18px 35px;
    margin-bottom: 30px;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1.5px solid var(--glass-border);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    box-shadow: var(--shadow-green);
}

.loading-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--neon-green);
    border-radius: 50%;
    animation: spinner-rotate 0.7s linear infinite;
}

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

/* 倒计时区域 */
.action-area {
    margin-bottom: 25px;
}

.countdown {
    text-align: center;
    padding: 35px;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), rgba(0, 217, 255, 0.05));
    backdrop-filter: blur(20px);
    border: 2px solid var(--primary-green);
    border-radius: 20px;
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.3);
    animation: countdown-appear 0.6s ease-out;
}

@keyframes countdown-appear {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.countdown p {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

.countdown-num {
    font-size: 72px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin: 15px 0;
    animation: countdown-beat 1s ease-in-out infinite;
}

@keyframes countdown-beat {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.15);
    }
}

/* 卡片容器 */
.speed-cards {
    display: flex;
    flex-direction: column;
    gap: 18px;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto 40px;
    animation: cards-appear 1s ease-out 0.3s both;
}

@keyframes cards-appear {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 速度卡片 - 全新设计 */
.speed-card {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 2px solid transparent;
    border-image: linear-gradient(135deg, var(--glass-border), transparent) 1;
    border-radius: 18px;
    padding: 25px 30px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: var(--shadow-strong);
}

/* 卡片发光边框动画 */
.speed-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-cyan), var(--accent-purple));
    border-radius: 18px;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.speed-card:hover::before {
    opacity: 0.5;
}

.speed-card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 25px 50px rgba(0, 255, 136, 0.25);
}

/* 卡片头部 */
.card-header {
    flex: 1;
    margin-right: 20px;
}

.domain-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.domain-name::before {
    content: '🌐';
    font-size: 26px;
    filter: grayscale(0.3);
}

.domain-url {
    font-size: 13px;
    color: var(--text-muted);
    font-family: 'Consolas', 'Monaco', monospace;
    letter-spacing: 0.5px;
}

/* 速度显示区 */
.speed-display {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}

.speed-value-container {
    display: flex;
    align-items: baseline;
    gap: 5px;
}

.speed-value {
    font-size: 52px;
    font-weight: 900;
    font-family: 'Consolas', 'Courier New', monospace;
    letter-spacing: -1px;
    line-height: 1;
    color: var(--neon-green);
    text-shadow: 0 0 15px rgba(0, 255, 136, 0.5);
    transition: all 0.3s ease;
}

.speed-value.counting {
    animation: value-pulse 0.15s ease;
}

@keyframes value-pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.08);
    }
}

.speed-unit {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    margin-left: 5px;
}

/* 速度标签 */
.speed-label {
    font-size: 13px;
    font-weight: 700;
    padding: 10px 18px;
    border-radius: 25px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

/* 推荐卡片 */
.speed-card.recommended {
    border: 2px solid var(--neon-green);
    box-shadow: 0 0 50px rgba(0, 255, 136, 0.4);
    animation: recommended-glow 2s ease-in-out infinite;
}

@keyframes recommended-glow {

    0%,
    100% {
        box-shadow: 0 0 40px rgba(0, 255, 136, 0.3);
    }

    50% {
        box-shadow: 0 0 60px rgba(0, 255, 136, 0.5);
    }
}

.recommended-badge {
    position: absolute;
    top: -1px;
    right: -1px;
    padding: 8px 18px;
    background: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
    color: #000;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.5px;
    border-radius: 0 16px 0 16px;
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.5);
    z-index: 10;
}

/* 测试中状态 */
.speed-card.testing {
    animation: testing-pulse 1.5s ease-in-out infinite;
}

@keyframes testing-pulse {

    0%,
    100% {
        border-color: rgba(0, 217, 255, 0.2);
    }

    50% {
        border-color: rgba(0, 217, 255, 0.5);
    }
}

/* 按钮系统 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 28px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-cyan));
    color: #000;
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 255, 136, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-normal);
    border: 2px solid var(--glass-border);
}

.btn-secondary:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

/* 页脚 */
.footer {
    margin-top: 50px;
    padding: 25px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* 错误消息 */
.error-message {
    text-align: center;
    padding: 50px 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 30px 15px;
    }

    .logo {
        font-size: 60px;
    }

    .title {
        font-size: 32px;
    }

    .speed-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 18px;
    }

    .card-header {
        margin-right: 0;
        margin-bottom: 15px;
        width: 100%;
    }

    .speed-display {
        width: 100%;
        justify-content: space-between;
    }

    .speed-value {
        font-size: 44px;
    }

    .countdown-num {
        font-size: 60px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 26px;
    }

    .speed-value {
        font-size: 38px;
    }

    .domain-name {
        font-size: 18px;
    }
}