/* ================================================
   管理后台专属样式
   ================================================ */

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.admin-sidebar {
    width: 250px;
    background: rgba(6, 10, 20, 0.95);
    backdrop-filter: var(--aero-blur-heavy);
    -webkit-backdrop-filter: var(--aero-blur-heavy);
    border-right: 1px solid var(--border-glass);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-logo {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(232,130,12,0.35);
}

.sidebar-logo-icon::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 50%;
    background: rgba(255,255,255,0.15);
}

.sidebar-logo-text {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.sidebar-logo-sub {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
}

.sidebar-section-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 8px 10px 6px;
    margin-top: 12px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    margin-bottom: 2px;
}

.sidebar-nav a:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.sidebar-nav a.active {
    color: var(--primary);
    background: rgba(232, 130, 12, 0.1);
    border: 1px solid rgba(232, 130, 12, 0.18);
}

.sidebar-nav a .nav-icon {
    width: 18px;
    text-align: center;
    opacity: 0.8;
}

.sidebar-bottom {
    padding: 16px 12px;
    border-top: 1px solid var(--border-glass);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    margin-bottom: 10px;
}

.sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.sidebar-user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-user-role {
    font-size: 11px;
    color: var(--text-muted);
}

/* 主内容区 */
.admin-content {
    flex: 1;
    margin-left: 250px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-topbar {
    background: rgba(13, 21, 37, 0.8);
    backdrop-filter: var(--aero-blur);
    -webkit-backdrop-filter: var(--aero-blur);
    border-bottom: 1px solid var(--border-glass);
    padding: 0 32px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.admin-topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-breadcrumb {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-breadcrumb span { color: var(--text-primary); font-weight: 600; }
.page-breadcrumb-sep { opacity: 0.4; }

.admin-topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-time {
    font-size: 12.5px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}

.admin-body {
    flex: 1;
    padding: 32px;
}

/* 后台卡片 */
.admin-card {
    background: rgba(13, 21, 37, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,0.05);
    margin-bottom: 24px;
    overflow: hidden;
}

.admin-card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255,255,255,0.02);
}

.admin-card-title {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.admin-card-body {
    padding: 24px;
}

/* 统计卡片网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: rgba(13, 21, 37, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition);
}

.stat-card:hover { transform: translateY(-2px); }

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.stat-card-icon.orange { background: rgba(232,130,12,0.15); color: var(--primary); }
.stat-card-icon.blue   { background: rgba(52,152,219,0.15); color: #3498db; }
.stat-card-icon.green  { background: rgba(39,174,96,0.15);  color: #2ecc71; }
.stat-card-icon.red    { background: rgba(231,76,60,0.15);  color: #e74c3c; }

.stat-card-num {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    display: block;
}

.stat-card-label {
    font-size: 12.5px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* 登录页 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.login-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 50% at 30% 30%, rgba(232,130,12,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 70%, rgba(52,152,219,0.06) 0%, transparent 55%);
    pointer-events: none;
}

.login-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(232,130,12,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(232,130,12,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.login-box {
    width: 420px;
    max-width: calc(100vw - 40px);
    position: relative;
    z-index: 2;
    animation: fadeInUp 0.5s ease;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-xl);
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 4px 24px rgba(232,130,12,0.4);
    position: relative;
    overflow: hidden;
}

.login-logo::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 50%;
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius-xl) var(--radius-xl) 50% 50%;
}

.login-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.login-form-wrap {
    padding: 32px 32px 28px;
}

.login-footer-text {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    padding: 0 24px 20px;
}

/* 富文本区域 */
.rich-editor {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.rich-editor-toolbar {
    padding: 8px 12px;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.rich-editor-btn {
    width: 30px;
    height: 28px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    font-family: inherit;
}

.rich-editor-btn:hover {
    background: var(--bg-glass);
    border-color: var(--border-glass);
    color: var(--text-primary);
}

.rich-editor-area {
    min-height: 200px;
    padding: 16px;
    outline: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    line-height: 1.7;
}

/* 进度滑块 */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255,255,255,0.08);
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 2px 8px rgba(232,130,12,0.4);
    cursor: pointer;
    transition: transform var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* 响应式 */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .admin-sidebar { transform: translateX(-100%); }
    .admin-content { margin-left: 0; }
    .admin-body { padding: 20px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}