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

body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    position: relative;
}

.loading-container {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.background-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float 15s infinite;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.particle:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
    animation-duration: 12s;
}

.particle:nth-child(2) {
    left: 30%;
    animation-delay: 2s;
    animation-duration: 18s;
}

.particle:nth-child(3) {
    left: 50%;
    animation-delay: 4s;
    animation-duration: 15s;
}

.particle:nth-child(4) {
    left: 70%;
    animation-delay: 1s;
    animation-duration: 20s;
}

.particle:nth-child(5) {
    left: 90%;
    animation-delay: 3s;
    animation-duration: 14s;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(100px) scale(1);
        opacity: 0;
    }
}

.content {
    text-align: center;
    z-index: 2;
    position: relative;
}

.logo-container {
    position: relative;
    margin-bottom: 60px;
    display: inline-block;
}

.logo-wrapper {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.logo-image {
    width: 200px;
    height: auto;
    max-width: 300px;
    animation: logoFadeIn 1.5s ease-in-out, logoFloat 3s ease-in-out infinite;
    filter: drop-shadow(0 0 30px rgba(0, 168, 255, 0.8));
    z-index: 3;
    position: relative;
}

@keyframes logoFadeIn {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.logo-text {
    font-size: 80px;
    font-weight: 900;
    color: #fff;
    text-shadow: 
        0 0 20px rgba(255, 255, 255, 0.5),
        0 0 40px rgba(0, 150, 255, 0.5),
        0 0 60px rgba(0, 150, 255, 0.3);
    letter-spacing: 8px;
    animation: pulse 2s ease-in-out infinite;
    position: relative;
}

.logo-subtitle {
    font-size: 60px;
    font-weight: 700;
    color: #00a8ff;
    text-shadow: 
        0 0 20px rgba(0, 168, 255, 0.8),
        0 0 40px rgba(0, 168, 255, 0.6),
        0 0 60px rgba(0, 168, 255, 0.4);
    letter-spacing: 4px;
    animation: pulse 2s ease-in-out infinite 0.5s;
}

.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 168, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: glow 3s ease-in-out infinite;
    z-index: 1;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.9;
    }
}

@keyframes glow {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.8;
    }
}

.loading-info {
    margin-top: 40px;
}

.loading-text {
    font-size: 24px;
    color: #fff;
    margin-bottom: 30px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    animation: fadeInOut 2s ease-in-out infinite;
    min-height: 32px;
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

.progress-container {
    width: 600px;
    margin: 0 auto;
    position: relative;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #00a8ff 0%, #0097e6 50%, #00a8ff 100%);
    border-radius: 10px;
    transition: width 0.3s ease;
    box-shadow: 
        0 0 20px rgba(0, 168, 255, 0.8),
        0 0 40px rgba(0, 168, 255, 0.4);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.progress-percent {
    position: absolute;
    top: -30px;
    right: 0;
    font-size: 18px;
    color: #00a8ff;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(0, 168, 255, 0.8);
}

.loading-tips {
    margin-top: 50px;
    padding: 20px;
}

.tip-text {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.3);
    animation: fadeInOut 3s ease-in-out infinite;
}

@media (max-width: 768px) {
    .logo-image {
        width: 150px;
        max-width: 200px;
    }
    
    .logo-text {
        font-size: 60px;
    }
    
    .logo-subtitle {
        font-size: 40px;
    }
    
    .progress-container {
        width: 90%;
    }
    
    .loading-text {
        font-size: 18px;
    }
}