/* index.css - 完整文件 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #000000;
    color: #f2ede8;
    line-height: 1.5;
    min-width: 320px;
}

:root {
    --orange: #f57c00;
    --orange-light: #ffb347;
    --orange-dark: #bf5b00;
    --white: #faf9f6;
    --off-white: #f0e9e0;
    --black: #0f0f0f;
    --black-soft: #1a1a1a;
    --gray-deep: #222222;
    --radius: 20px;
    --card-radius: 24px;
}

.glass {
    background: rgba(20, 20, 20, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(245, 124, 0, 0.15);
}

.site-wrapper {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 5vw;
    background-color: var(--black);
}

/* 导航栏 - 强制不换行 */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2.5vh 0 2vh;
    border-bottom: 1px solid rgba(245, 124, 0, 0.25);
    flex-wrap: nowrap;
    gap: 15px;
    width: 100%;
}

.logo-area {
    display: flex;
    align-items: baseline;
    gap: 0.4vw;
    flex-shrink: 0;
    white-space: nowrap;
}

.logo-sky {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 600;
    color: var(--white);
    flex-shrink: 0;
}

.logo-dot {
    font-size: clamp(1.6rem, 4.5vw, 2.5rem);
    font-weight: 700;
    color: var(--orange);
    flex-shrink: 0;
}

.logo-name {
    font-size: clamp(1.3rem, 4vw, 2rem);
    font-weight: 500;
    background: linear-gradient(135deg, #ffa24b 0%, #f57c00 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
}

/* 头像上传样式 */
.avatar-upload {
    margin: 10px 0;
}

.avatar-upload img {
    transition: 0.2s;
}

.avatar-upload input[type="file"] {
    color: white;
    font-size: 0.8rem;
    max-width: 200px;
}

.avatar-upload input[type="file"]::-webkit-file-upload-button {
    background: var(--orange);
    border: none;
    color: black;
    padding: 5px 10px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    margin-right: 10px;
}

.nav-right {
    display: flex;
    gap: clamp(6px, 1.5vw, 16px);
    align-items: center;
    flex-wrap: nowrap;
    flex-shrink: 0;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--orange);
    color: var(--orange);
    padding: 0.8vh 2vw;
    border-radius: 40px;
    font-weight: 600;
    font-size: clamp(0.7rem, 2vw, 0.95rem);
    cursor: pointer;
    transition: 0.2s;
    white-space: nowrap;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.btn-outline:hover {
    background: rgba(245, 124, 0, 0.1);
}

.btn-solid {
    background: var(--orange);
    border: none;
    color: var(--black);
    padding: 0.8vh 2.2vw;
    border-radius: 40px;
    font-weight: 600;
    font-size: clamp(0.7rem, 2vw, 0.95rem);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(245, 124, 0, 0.3);
    white-space: nowrap;
    border: 1px solid transparent;
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.btn-solid:hover {
    background: var(--orange-light);
    box-shadow: 0 6px 16px rgba(245, 124, 0, 0.4);
}

/* 主视觉 */
.hero {
    text-align: center;
    padding: 8vh 0 5vh;
}

.hero h1 {
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--white);
}

.hero h1 span {
    color: var(--orange);
    position: relative;
}

.hero p {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--orange-light);
    margin-top: 2vh;
}

/* 图标矩阵 */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3vw;
    margin: 5vh 0 8vh;
}

.grid-item {
    background: var(--black-soft);
    border-radius: var(--card-radius);
    padding: 3vh 1.5vw;
    text-align: center;
    border: 1px solid #333;
    cursor: pointer;
    transition: 0.2s;
}

.grid-item:hover {
    border-color: var(--orange);
    transform: translateY(-5px);
}

.icon-square {
    width: 60px;
    height: 60px;
    background: #222;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5vh;
    border: 2px solid var(--orange);
}

.icon-square i {
    font-size: 2rem;
    color: var(--orange);
}

.grid-item span {
    display: block;
    font-size: clamp(0.9rem, 2.5vw, 1.1rem);
    font-weight: 600;
    margin-bottom: 0.5vh;
}

.grid-item p {
    color: #aaa;
    font-size: clamp(0.7rem, 2vw, 0.85rem);
}

/* 特性区域 */
.feature-section {
    display: flex;
    flex-wrap: wrap;
    gap: 2vw;
    margin: 5vh 0;
}

.feature-card {
    background: var(--black-soft);
    border-radius: var(--card-radius);
    padding: 3vh 2vw;
    border: 1px solid #333;
    flex: 1 1 250px;
}

.group-row {
    display: flex;
    flex-wrap: wrap;
    gap: 2vw;
    width: 100%;
}

.group-card {
    background: #222;
    border-radius: var(--card-radius);
    padding: 2vh 2vw;
    border: 1px solid #444;
    display: flex;
    align-items: center;
    gap: 1.5vw;
    flex: 1 1 300px;
}

.group-info h4 {
    color: var(--orange);
    margin-bottom: 0.5vh;
}

.group-info p {
    color: #aaa;
    font-size: 0.9rem;
    margin: 0.3vh 0;
}

.badge {
    background: gold;
    color: black;
    padding: 0.2vh 0.8vw;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    display: inline-block;
}

.join-row {
    display: flex;
    flex-wrap: wrap;
    gap: 2vw;
    margin: 2vh 0;
}

.join-card {
    background: #222;
    border-radius: var(--card-radius);
    padding: 2vh 2vw;
    border: 1px solid #444;
    flex: 1 1 200px;
    text-align: center;
}

.join-card h3 {
    color: var(--orange);
    margin: 1vh 0;
}

.tag-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 1vh 0;
}

.tag {
    background: #333;
    color: var(--orange);
    padding: 0.4vh 1vw;
    border-radius: 20px;
    font-size: 0.75rem;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--black-soft);
    margin: 0 auto;
    padding: 3vh 3vw;
    border: 2px solid var(--orange);
    border-radius: var(--card-radius);
    max-width: 500px;
    position: relative;
    top: 50%;
    transform: translateY(-50%);
    max-height: 90vh;
    overflow-y: auto;
}

.close {
    color: var(--orange);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 10px;
}

.close:hover {
    color: var(--orange-light);
}

.modal-input {
    width: 100%;
    padding: 1.5vh 1vw;
    margin: 1vh 0;
    background: var(--black);
    border: 1px solid #444;
    border-radius: 10px;
    color: var(--white);
    font-size: 1rem;
}

.modal-input:focus {
    outline: none;
    border-color: var(--orange);
}

textarea.modal-input {
    resize: vertical;
    min-height: 80px;
}

/* 底部 */
footer {
    text-align: center;
    padding: 3vh 0 4vh;
    color: #aaa;
    font-size: 0.85rem;
    border-top: 1px solid #333;
    display: flex;
    justify-content: center;
    gap: 2vw;
    flex-wrap: wrap;
}

.license-badge {
    color: var(--orange);
    cursor: pointer;
}

.license-badge:hover {
    text-decoration: underline;
}

/* 响应式 - 缩小字体和间距，但保持不换行 */
@media (max-width: 1024px) {
    .site-wrapper {
        padding: 0 3vw;
    }
    
    .nav-right {
        gap: 12px;
    }
}

@media (max-width: 900px) {
    .site-wrapper {
        padding: 0 2.5vw;
    }
    
    .navbar {
        padding: 2vh 0 1.8vh;
    }
    
    .logo-sky {
        font-size: 1.8rem;
    }
    .logo-dot {
        font-size: 1.8rem;
    }
    .logo-name {
        font-size: 1.8rem;
    }
    
    .btn-outline, .btn-solid {
        padding: 0.7vh 2.5vw;
        font-size: 0.8rem;
    }
    
    .nav-right {
        gap: 10px;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 1.8vh 0 1.5vh;
    }
    
    .logo-sky {
        font-size: 1.8rem;
    }
    .logo-dot {
        font-size: 1.8rem;
    }
    .logo-name {
        font-size: 1.8rem;
    }
    
    .btn-outline, .btn-solid {
        padding: 0.7vh 2.5vw;
        font-size: 0.6rem;
        min-width: 3rem;
        min-height: 1rem;
    }
    
    .nav-right {
        gap: 8px;
    }
}

@media (max-width: 600px) {
    .navbar {
        padding: 1.5vh 0 1.2vh;
    }
    
    .logo-sky {
        font-size: 1.1rem;
    }
    .logo-dot {
        font-size: 1.2rem;
    }
    .logo-name {
        font-size: 1rem;
    }
    
    .btn-outline, .btn-solid {
        padding: 0.7vh 2.5vw;
        font-size: 0.6rem;
        min-width: 3rem;
        min-height: 1rem;
    }
    
    .nav-right {
        gap: 6px;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 1.2vh 0 1vh;
    }
    
    .logo-sky {
        font-size: 1rem;
    }
    .logo-dot {
        font-size: 1.1rem;
    }
    .logo-name {
        font-size: 0.9rem;
    }
    
    .btn-outline, .btn-solid {
        padding: 0.7vh 2.5vw;
        font-size: 0.6rem;
        min-width: 3rem;
        min-height: 1rem;
    }
    
    .nav-right {
        gap: 4px;
    }
}

@media (max-width: 360px) {
    .logo-sky {
        font-size: 0.9rem;
    }
    .logo-dot {
        font-size: 1rem;
    }
    .logo-name {
        font-size: 0.8rem;
    }
    
    .btn-outline, .btn-solid {
        padding: 0.3vh 1.5vw;
        font-size: 0.6rem;
    }
}