/* ============================================================
   云LED B站 主题样式
   支持暗黑/明亮模式切换
   参考设备控制页风格
   ============================================================ */

/* ===== CSS变量 ===== */
:root {
    /* 明亮模式（默认） */
    --bg-primary: #f5f5f0;
    --bg-card: #ffffff;
    --bg-hover: #f0f2f5;
    --bg-input: #ffffff;
    --bg-header: #ffffff;
    --bg-footer: #ffffff;
    
    --text-primary: #333333;
    --text-secondary: #555555;
    --text-muted: #888888;
    --text-light: #ffffff;
    
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.12);
    
    --color-primary: #339933;
    --color-primary-dark: #2d7a2d;
    --color-primary-light: #66cc66;
    --color-accent: #ff6600;
    --color-accent-dark: #e65c00;
    --color-blue: #0066cc;
    --color-blue-dark: #0052a3;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    --color-warning: #d97706;
    
    --radius: 12px;
    --radius-sm: 8px;
    
    --transition: all 0.3s ease;
}

/* ===== 暗黑模式 ===== */
body.dark-mode {
    --bg-primary: #151515;
    --bg-card: #16213e;
    --bg-hover: #1a2a4a;
    --bg-input: #0a0f1a;
    --bg-header: #0d1b2a;
    --bg-footer: #0d1b2a;
    
    --text-primary: #e0e0e0;
    --text-secondary: #aaaaaa;
    --text-muted: #777777;
    --text-light: #ffffff;
    
    --border-color: #2a3a5a;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.4);
    
    --color-primary: #66cc66;
    --color-primary-dark: #4aaf4a;
    --color-primary-light: #88dd88;
    --color-accent: #ff6600;
    --color-accent-dark: #e65c00;
    --color-blue: #4488dd;
    --color-blue-dark: #3377cc;
}

/* ===== 全局重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.3s ease, color 0.3s ease;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== 顶部栏 ===== */
.topbar {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 6px 0;
    font-size: 12px;
    color: var(--text-muted);
    transition: background 0.3s ease, border-color 0.3s ease;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.topbar .auth-links {
    display: flex;
    gap: 12px;
    align-items: center;
}
.topbar .auth-links a {
    color: var(--text-muted);
    transition: color 0.2s;
}
.topbar .auth-links a:hover {
    color: var(--color-primary);
}

/* ===== 主头部 ===== */
.main-header {
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s ease, border-color 0.3s ease;
}
.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.main-header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.main-header .logo img {
    height: 40px;
    max-width: 180px;
    object-fit: contain;
}
.main-header .logo .site-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    transition: color 0.3s ease;
}
body.dark-mode .main-header .logo .site-name {
    color: var(--color-primary-light);
}

/* ===== 主题切换按钮 ===== */
.theme-toggle {
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    padding: 6px 16px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}
.theme-toggle:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
body.dark-mode .theme-toggle:hover {
    background: var(--color-primary);
    color: #fff;
}
/* ===== 用户下拉菜单 ===== */
.user-dropdown {
    position: relative;
    display: inline-block;
    cursor: pointer;
}

.user-avatar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px 4px 4px;
    border-radius: 30px;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}
.user-avatar:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.user-avatar .avatar-text {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}
.user-avatar .username {
    font-size: 14px;
    font-weight: 500;
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.user-avatar .dropdown-arrow {
    font-size: 12px;
    transition: transform 0.2s;
}
.user-avatar.active .dropdown-arrow {
    transform: rotate(180deg);
}

.user-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 160px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-hover);
    padding: 6px 0;
    margin-top: 4px;
    z-index: 100;
}
.user-menu.show {
    display: block;
}
.user-menu a {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.15s;
}
.user-menu a:hover {
    background: var(--bg-hover);
    color: var(--color-primary);
}
.user-menu a.logout {
    color: var(--color-danger);
    border-top: 1px solid var(--border-color);
    margin-top: 4px;
    padding-top: 10px;
}
.user-menu a.logout:hover {
    background: #fee2e2;
    color: var(--color-danger);
}
/* ===== 容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ===== 首页Banner ===== */
.banner {
     background: linear-gradient(135deg, #a8c0ff 0%, #3f2b96 50%, #4facfe 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}
.banner .bg-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: 1;
}
.banner .content {
    position: relative;
    z-index: 2;
}
.banner h1 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 12px;
}
.banner h1 .highlight {
    background: linear-gradient(135deg, #66cc66 0%, #ff6600 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.banner p {
    font-size: 18px;
    color: #ccc;
    max-width: 600px;
    margin: 0 auto 20px;
}
.banner .btn-primary {
    display: inline-block;
    padding: 12px 40px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}
.banner .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(51, 153, 51, 0.4);
}
body.dark-mode .banner .btn-primary {
    background: var(--color-primary);
}

/* ===== 卡片 ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}
.card:hover {
    box-shadow: var(--shadow-hover);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-footer);
    color: #555;
    padding: 20px 0 16px;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
}
.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer .footer-text {
    font-size: 13px;
}
.footer .footer-links {
    display: flex;
    gap: 16px;
    font-size: 13px;
}
.footer .footer-links a {
    color: #555;
    transition: color 0.2s;
}
.footer .footer-links a:hover {
    color: var(--color-primary);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .banner { padding: 40px 0; min-height: 220px; }
    .banner h1 { font-size: 28px; }
    .banner p { font-size: 16px; }
    .main-header .container { flex-direction: column; align-items: flex-start; }
    .main-header .logo .site-name { font-size: 18px; }
    .main-header .logo img { height: 32px; }
    .footer .container { flex-direction: column; text-align: center; }
    .topbar .container { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .banner h1 { font-size: 22px; }
    .banner .btn-primary { padding: 10px 28px; font-size: 14px; }
}