/* styles.css - 开发者资源分享平台样式 */

:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4cc9f0;
    --success-color: #4ade80;
    --warning-color: #facc15;
    --danger-color: #f87171;
    --light-bg: #f8f9fa;
    --dark-text: #212529;
    --light-text: #f8f9fa;
    --border-color: #dee2e6;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: #ffffff;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

header p {
    opacity: 0.9;
}

/* 导航栏样式 */
nav {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

nav li {
    margin: 0 1rem;
}

nav a {
    display: block;
    padding: 1rem;
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover, nav a.active {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

/* 主要内容区域 */
main {
    min-height: calc(100vh - 200px);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(67, 97, 238, 0.9), rgba(63, 55, 201, 0.9)), url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%234361ee"/><circle cx="20" cy="20" r="5" fill="%234cc9f0" opacity="0.3"/><circle cx="50" cy="50" r="8" fill="%234cc9f0" opacity="0.3"/><circle cx="80" cy="20" r="6" fill="%234cc9f0" opacity="0.3"/></svg>');
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
    margin: 0.5rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-upload {
    background-color: var(--success-color);
    color: white;
    font-size: 1.1rem;
    padding: 1rem 2rem;
}

.btn-download {
    background-color: var(--primary-color);
    color: white;
}

.btn-details {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

/* 特色功能区域 */
.features {
    padding: 4rem 0;
    background-color: var(--light-bg);
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* 上传区域 */
.upload-section {
    padding: 3rem 0;
    background-color: white;
}

.upload-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.upload-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

#uploadForm {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: #6c757d;
    font-size: 0.9rem;
}

.upload-info {
    background: var(--light-bg);
    padding: 1.5rem;
    border-radius: 8px;
}

.upload-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.upload-info ul {
    list-style: none;
}

.upload-info li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.upload-info li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* 浏览资源区域 */
.browse-section {
    padding: 3rem 0;
    background-color: white;
}

.browse-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-bar input,
.filter-bar select {
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.filter-bar input {
    flex: 1;
    min-width: 200px;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.resource-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.resource-card:hover {
    transform: translateY(-5px);
}

.resource-header {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.resource-header h3 {
    margin: 0;
}

.version {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.description {
    padding: 1rem;
    color: #495057;
}

.resource-meta {
    padding: 0.5rem 1rem;
    background-color: var(--light-bg);
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    font-size: 0.9rem;
    color: #6c757d;
}

.resource-meta span {
    background-color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.resource-actions {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
}

/* 页脚 */
footer {
    background-color: var(--dark-text);
    color: var(--light-text);
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-links {
    text-align: center;
    margin-top: 1rem;
}

.footer-links a {
    color: var(--light-text);
    text-decoration: none;
    margin: 0 1rem;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav li {
        margin: 0.2rem 0;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .upload-container {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .resource-meta {
        flex-direction: column;
        gap: 0.3rem;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .btn {
        display: block;
        margin: 0.5rem auto;
        width: 80%;
        text-align: center;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}