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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    background: #ffffff;
    min-height: 100vh;
    padding: 20px;
    color: #333;
    transition: background-color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    body {
        background: #2d2d2d;
        color: #e0e0e0;
    }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transition: background-color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .container {
        background: #3d3d3d;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    }
}

/* 活动横幅 */
.activity-banner {
    width: 100%;
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    padding: 60px 20px;
    text-align: center;
    transition: background 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .activity-banner {
        background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    }
}

.banner-title {
    font-size: 4em;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    letter-spacing: 2px;
    transition: color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .banner-title {
        color: #e0e0e0;
    }
}

.banner-subtitle {
    font-size: 1.5em;
    color: #666;
    font-weight: 300;
    transition: color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .banner-subtitle {
        color: #a0a0a0;
    }
}

/* 门列表区域 */
.doors-section {
    padding: 60px 40px;
    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
    transition: background 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .doors-section {
        background: linear-gradient(to bottom, #3d3d3d 0%, #2d2d2d 100%);
    }
}

.section-title {
    font-size: 2.5em;
    color: #667eea;
    text-align: center;
    margin-bottom: 50px;
    font-weight: bold;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.doors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    justify-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

/* 门卡片 - 只展示图片本身，无背景无框 */
.door-card {
    width: 100%;
    max-width: 500px;
    cursor: pointer;
    transition: transform 0.4s ease;
    position: relative;
}

.door-card:hover {
    transform: scale(1.02);
}

.door-card:active {
    transform: scale(0.98);
}

.door-image-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.door-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    transition: transform 0.4s;
}

.door-card:hover .door-image {
    transform: scale(1.05);
}

.door-overlay {
    display: none; /* 只展示图片，不展示文字 */
}

.door-label {
    display: block;
    font-size: 1.8em;
    font-weight: bold;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.door-subtitle {
    display: block;
    font-size: 1.1em;
    opacity: 0.9;
    font-weight: 300;
}

/* 即将开放的门 */
.door-card.coming-soon {
    cursor: not-allowed;
    opacity: 0.6;
}

.door-card.coming-soon:hover {
    transform: none;
}

.door-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2em;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* 紫色之门：默认完全隐藏（不占位），点击解锁或倒计时结束后放出 */
.purple-door-card {
    display: none !important;
}

/* 倒计时结束后：与蓝/白门完全一致，无特殊样式 */
.purple-door-card.purple-revealed {
    display: block !important;
}

/* 时间未到通过特殊手段解锁：神秘动画 + 模糊效果 */
.purple-door-card.purple-revealed.purple-early-unlock {
    animation: purple-reveal 1.2s ease forwards;
}

.purple-door-card.purple-early-unlock {
    filter: blur(4px);
}

.purple-door-card.purple-early-unlock:hover {
    filter: blur(2px);
}

/* 黑色之门：默认完全隐藏，点击 14 次解锁 */
.black-door-card {
    display: none !important;
}

.black-door-card.black-revealed {
    display: block !important;
}

.black-door-card.black-revealed.black-early-unlock {
    animation: black-reveal 1.2s ease forwards;
}

.black-door-card.black-early-unlock {
    filter: blur(4px);
}

.black-door-card.black-early-unlock:hover {
    filter: blur(2px);
}

@keyframes black-reveal {
    0% {
        opacity: 0;
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes purple-reveal {
    0% {
        opacity: 0;
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* 说明区域 */
.info-section {
    padding: 30px;
    text-align: center;
    background: #f8f9fa;
    border-top: 2px solid #e9ecef;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .info-section {
        background: #2d2d2d;
        border-top-color: #4a4a4a;
    }
}

.info-text {
    font-size: 1.1em;
    color: #666;
    margin: 0;
    transition: color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .info-text {
        color: #a0a0a0;
    }
}

/* 社群 */
.community-section {
    padding: 25px;
    text-align: center;
    background: #f8f9fa;
    border-top: 2px solid #e9ecef;
    margin-top: 30px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .community-section {
        background: #2d2d2d;
        border-top-color: #4a4a4a;
    }
}

.community-link {
    display: inline-block;
    padding: 12px 24px;
    background: #17a2b8;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s;
}

.community-link:hover {
    background: #138496;
    transform: translateY(-2px);
}

/* 响应式设计 */
html {
    overflow-x: hidden;
}

body {
    overflow-x: hidden;
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .container {
        border-radius: 15px;
    }

    .activity-banner {
        padding: 40px 16px;
    }

    .banner-title {
        font-size: 2.5em;
    }

    .banner-subtitle {
        font-size: 1.2em;
    }

    .doors-section {
        padding: 40px 20px;
    }

    .section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
    }

    .doors-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .door-card {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .banner-title {
        font-size: 2em;
    }

    .banner-subtitle {
        font-size: 1em;
    }

    .section-title {
        font-size: 1.5em;
    }

    .doors-section {
        padding: 30px 16px;
    }
}