/* 未来科技感主题 - 2026年倒计时页面 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS变量定义 */
:root {
    --primary-color: #00ffff;
    --secondary-color: #ff00ff;
    --accent-color: #ffff00;
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --glow-primary: 0 0 20px var(--primary-color);
    --glow-secondary: 0 0 20px var(--secondary-color);
    --glow-accent: 0 0 20px var(--accent-color);
}

/* 全局样式 */
body {
    font-family: 'Orbitron', 'Courier New', monospace;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    position: relative;
}

/* 背景效果 */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-darker) 0%, #1a1a2e 50%, #16213e 100%);
    z-index: -3;
}

/* 网格背景 */
.background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    z-index: -2;
}

/* 粒子效果 */
.background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle, var(--primary-color) 1px, transparent 1px),
        radial-gradient(circle, var(--secondary-color) 1px, transparent 1px);
    background-size: 100px 100px;
    background-position: 0 0, 50px 50px;
    opacity: 0.3;
    animation: particleFloat 30s ease-in-out infinite;
    z-index: -1;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

@keyframes particleFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    25% {
        transform: translate(20px, -20px) scale(1.1);
        opacity: 0.4;
    }
    50% {
        transform: translate(40px, 0) scale(0.9);
        opacity: 0.5;
    }
    75% {
        transform: translate(20px, 20px) scale(1.2);
        opacity: 0.4;
    }
}

/* 容器 */
.container {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* 标题部分 */
.header {
    text-align: center;
    margin-bottom: 50px;
    animation: fadeInDown 1s ease-out;
}

.title {
    font-size: 4rem;
    font-weight: bold;
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
    margin-bottom: 10px;
    letter-spacing: 5px;
    animation: pulse 2s ease-in-out infinite;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--secondary-color);
    text-shadow: var(--glow-secondary);
    letter-spacing: 3px;
}

/* 倒计时容器 */
.countdown-container {
    margin-bottom: 60px;
    animation: fadeInUp 1s ease-out 0.3s both;
}

.countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(10, 10, 10, 0.8);
    padding: 30px;
    border-radius: 20px;
    border: 2px solid var(--primary-color);
    box-shadow: var(--glow-primary), inset 0 0 30px rgba(0, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.countdown-item {
    text-align: center;
    min-width: 100px;
    margin: 0 10px;
}

.countdown-number {
    display: block;
    font-size: 3.5rem;
    font-weight: bold;
    color: var(--accent-color);
    text-shadow: var(--glow-accent);
    background: linear-gradient(45deg, var(--accent-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: numberGlow 1.5s ease-in-out infinite alternate;
}

.countdown-label {
    display: block;
    font-size: 1rem;
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
    margin-top: 5px;
    letter-spacing: 2px;
}

.countdown-separator {
    font-size: 3rem;
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
    animation: blink 1s ease-in-out infinite;
}

/* 弹幕容器 */
.danmaku-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    overflow: hidden;
}

/* 弹幕样式 */
.danmaku {
    position: absolute;
    white-space: nowrap;
    font-size: 1.2rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    animation: danmakuMove 8s linear;
    opacity: 0.9;
}

/* 弹幕输入区域 */
.danmaku-input-container {
    position: fixed;
    bottom: 30px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
    z-index: 20;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.danmaku-form {
    display: flex;
    gap: 15px;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 800px;
}

.danmaku-input {
    flex: 1;
    padding: 15px 20px;
    font-size: 1rem;
    font-family: inherit;
    background: rgba(10, 10, 10, 0.9);
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
    border-radius: 30px;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: var(--glow-primary);
}

.danmaku-input:focus {
    border-color: var(--secondary-color);
    box-shadow: var(--glow-secondary), inset 0 0 20px rgba(255, 0, 255, 0.1);
    transform: scale(1.02);
}

.danmaku-submit {
    padding: 15px 30px;
    font-size: 1rem;
    font-family: inherit;
    font-weight: bold;
    color: var(--bg-dark);
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-shadow: none;
    box-shadow: var(--glow-primary);
}

.danmaku-submit:hover {
    transform: scale(1.1);
    box-shadow: var(--glow-secondary);
    background: linear-gradient(45deg, var(--secondary-color), var(--accent-color));
}

.danmaku-submit:active {
    transform: scale(0.95);
}

/* 动画效果 */
@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 pulse {
    0%, 100% {
        transform: scale(1);
        text-shadow: var(--glow-primary);
    }
    50% {
        transform: scale(1.05);
        text-shadow: 0 0 30px var(--primary-color), 0 0 40px var(--primary-color);
    }
}

@keyframes numberGlow {
    from {
        text-shadow: var(--glow-accent);
    }
    to {
        text-shadow: 0 0 30px var(--accent-color), 0 0 40px var(--accent-color);
    }
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

@keyframes danmakuMove {
    from {
        transform: translateX(100vw);
    }
    to {
        transform: translateX(-100%);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .title {
        font-size: 2.5rem;
        letter-spacing: 3px;
        line-height: 1.2;
    }
    
    .subtitle {
        font-size: 1.2rem;
        letter-spacing: 2px;
    }
    
    .countdown {
        padding: 20px;
        gap: 5px;
        border-radius: 15px;
    }
    
    .countdown-item {
        min-width: 70px;
        margin: 0 3px;
    }
    
    .countdown-number {
        font-size: 2.5rem;
        line-height: 1;
    }
    
    .countdown-label {
        font-size: 0.9rem;
        margin-top: 3px;
    }
    
    .countdown-separator {
        font-size: 2rem;
        margin: 0 2px;
    }
    
    .danmaku-input-container {
        bottom: 20px;
        padding: 0 15px;
    }
    
    .danmaku-form {
        flex-direction: column;
        gap: 10px;
        align-items: center;
        justify-content: center;
    }
    
    .danmaku-input {
        width: 100%;
        max-width: 500px;
        padding: 15px 20px;
        font-size: 1rem;
        border-radius: 25px;
    }
    
    .danmaku-submit {
        width: 100%;
        max-width: 500px;
        padding: 15px 20px;
        font-size: 1rem;
        border-radius: 25px;
    }
    
    /* 优化移动端弹幕显示 */
    .danmaku {
        font-size: 1rem !important;
        animation-duration: 10s !important;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2rem;
        letter-spacing: 2px;
    }
    
    .subtitle {
        font-size: 1rem;
        letter-spacing: 1px;
    }
    
    .countdown {
        padding: 15px;
        gap: 3px;
        border-radius: 12px;
    }
    
    .countdown-item {
        min-width: 55px;
        margin: 0 2px;
    }
    
    .countdown-number {
        font-size: 1.8rem;
    }
    
    .countdown-label {
        font-size: 0.8rem;
        margin-top: 2px;
    }
    
    .countdown-separator {
        font-size: 1.5rem;
        margin: 0 1px;
    }
    
    .danmaku-input-container {
        bottom: 15px;
        padding: 0 10px;
    }
    
    .danmaku-input {
        padding: 14px 18px;
        font-size: 0.95rem;
    }
    
    .danmaku-submit {
        padding: 14px 18px;
        font-size: 0.95rem;
    }
    
    /* 进一步优化小屏幕弹幕 */
    .danmaku {
        font-size: 0.9rem !important;
        animation-duration: 12s !important;
    }
}

@media (max-width: 360px) {
    .title {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    .countdown {
        padding: 12px;
    }
    
    .countdown-item {
        min-width: 48px;
    }
    
    .countdown-number {
        font-size: 1.5rem;
    }
    
    .countdown-label {
        font-size: 0.7rem;
    }
    
    .countdown-separator {
        font-size: 1.2rem;
    }
    
    /* 小屏幕优化弹幕显示 */
    .danmaku {
        font-size: 0.85rem !important;
        animation-duration: 14s !important;
    }
}