/* ===== 后台管理通用样式 ===== */

:root {
    --admin-primary: #4f46e5;
    --admin-primary-hover: #4338ca;
    --admin-danger: #dc2626;
    --admin-success: #16a34a;
    --admin-bg: #f1f5f9;
    --admin-card-bg: #ffffff;
    --admin-text: #1e293b;
    --admin-text-muted: #64748b;
    --admin-border: #e2e8f0;
    --admin-radius: 10px;
    --admin-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
}

/* ===== 登录页面 ===== */

.admin-login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0;
    padding: 20px;
}

.admin-login-card {
    background: var(--admin-card-bg);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

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

.admin-login-header h1 {
    font-size: 26px;
    color: var(--admin-text);
    margin: 0 0 8px;
    font-weight: 700;
}

.admin-login-header p {
    color: var(--admin-text-muted);
    font-size: 14px;
    margin: 0;
}

.admin-login-form .form-group {
    margin-bottom: 20px;
}

.admin-login-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--admin-text);
    margin-bottom: 6px;
}

.admin-login-form input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--admin-border);
    border-radius: 8px;
    font-size: 15px;
    color: var(--admin-text);
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.admin-login-form input:focus {
    outline: none;
    border-color: var(--admin-primary);
}

.admin-error-msg {
    background: #fef2f2;
    color: var(--admin-danger);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 16px;
    border: 1px solid #fecaca;
}

.admin-login-footer {
    text-align: center;
    margin-top: 24px;
}

.admin-login-footer a {
    color: var(--admin-text-muted);
    font-size: 13px;
    text-decoration: none;
}

.admin-login-footer a:hover {
    color: var(--admin-primary);
}

/* ===== 密码输入框通用 ===== */

.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: 60px;
}

.toggle-password {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: var(--admin-text-muted);
    cursor: pointer;
    font-size: 13px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s;
}

.toggle-password:hover {
    background: var(--admin-border);
}

/* ===== 按钮 ===== */

.admin-btn {
    padding: 10px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.admin-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.admin-btn-primary {
    background: var(--admin-primary);
    color: #fff;
}

.admin-btn-primary:hover:not(:disabled) {
    background: var(--admin-primary-hover);
}

.admin-btn-secondary {
    background: var(--admin-border);
    color: var(--admin-text);
}

.admin-btn-secondary:hover:not(:disabled) {
    background: #cbd5e1;
}

.admin-btn-block {
    width: 100%;
    justify-content: center;
    padding: 13px;
    font-size: 15px;
}

/* ===== 管理面板布局 ===== */

.admin-body {
    background: var(--admin-bg);
    margin: 0;
    min-height: 100vh;
}

.admin-header {
    background: var(--admin-card-bg);
    box-shadow: var(--admin-shadow);
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.admin-header h1 {
    font-size: 17px;
    color: var(--admin-text);
    margin: 0;
    font-weight: 700;
}

.admin-header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-header-link {
    color: var(--admin-text-muted);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 14px;
    border-radius: 6px;
    transition: all 0.2s;
}

.admin-header-link:hover {
    background: var(--admin-border);
    color: var(--admin-text);
}

.admin-link-danger {
    color: var(--admin-danger) !important;
}

.admin-link-danger:hover {
    background: #fef2f2 !important;
}

/* ===== 主内容区 ===== */

.admin-main {
    max-width: 800px;
    margin: 0 auto;
    padding: 24px 20px 48px;
}

/* ===== 卡片 ===== */

.admin-card {
    background: var(--admin-card-bg);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.admin-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--admin-text);
    margin: 0 0 4px;
}

.admin-card-desc {
    font-size: 13px;
    color: var(--admin-text-muted);
    margin: 0 0 20px;
}

/* ===== 表单网格 ===== */

.admin-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.admin-form-grid .form-group {
    margin-bottom: 0;
}

.admin-form-grid .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--admin-text);
    margin-bottom: 6px;
}

.admin-form-grid .form-group input,
.admin-form-grid .form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--admin-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--admin-text);
    transition: border-color 0.2s;
    box-sizing: border-box;
    background: #fff;
}

.admin-form-grid .form-group input:focus,
.admin-form-grid .form-group select:focus {
    outline: none;
    border-color: var(--admin-primary);
}

.admin-card-actions {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* ===== Toast 消息 ===== */

.admin-toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    z-index: 9999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: opacity 0.3s;
}

.admin-toast.success {
    background: var(--admin-success);
    color: #fff;
}

.admin-toast.error {
    background: var(--admin-danger);
    color: #fff;
}

/* ===== 响应式 ===== */

/* ===== 功能开关 ===== */

.feature-toggles {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px solid var(--admin-border);
}

.toggle-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toggle-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--admin-text);
}

.toggle-desc {
    font-size: 12px;
    color: var(--admin-text-muted);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #cbd5e1;
    border-radius: 26px;
    transition: 0.3s;
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--admin-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

/* ===== 响应式 ===== */

@media (max-width: 640px) {
    .admin-form-grid {
        grid-template-columns: 1fr;
    }

    .admin-header {
        padding: 0 12px;
    }

    .admin-header h1 {
        font-size: 14px;
    }

    .admin-header-link {
        padding: 6px 10px;
        font-size: 13px;
    }

    .admin-card {
        padding: 18px;
    }

    .admin-card-actions {
        flex-direction: column;
    }

    .admin-card-actions .admin-btn {
        width: 100%;
        justify-content: center;
    }

    .admin-login-card {
        padding: 28px 20px;
    }
}