/**
 * PVQ-UI Admin（后台设置页）
 * 设置页骨架 + 选项卡（含磁吸滑块）
 * 依赖：pvq-ui（令牌/通用组件）+ font-awesome
 * 唯一真源：doc/模块文档/设计令牌与组件清单.md §3.2
 * @version 1.1.2
 */

/* ===== 设置页骨架 Settings ===== */
.pvq-settings {
    max-width: 860px;
    margin: 0 auto;
    padding: 24px 0 48px;
    background: var(--pvq-bg);
}
.pvq-settings__header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--pvq-border-light);
    animation: pvq-slideDown 0.5s var(--pvq-ease) forwards;
}
.pvq-settings__logo {
    width: 48px;
    height: 48px;
    border-radius: var(--pvq-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--pvq-shadow-primary);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    animation: pvq-logoAppear 0.6s var(--pvq-ease-bounce) 0.1s both;
}
.pvq-settings__logo::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.12) 50%, transparent 60%);
    animation: pvq-shimmer 4s ease infinite;
    z-index: 2;
}
.pvq-settings__logo svg { width: 100%; height: 100%; display: block; position: relative; z-index: 1; }
.pvq-settings__title-group { flex: 1; }
.pvq-settings__title { font-size: 20px; font-weight: 700; color: var(--pvq-text); letter-spacing: -0.02em; margin: 0; }
.pvq-settings__subtitle { font-size: 13px; color: var(--pvq-text-muted); margin-top: 2px; }
.pvq-settings__version-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--pvq-primary);
    background: var(--pvq-primary-light);
    padding: 3px 10px;
    border-radius: var(--pvq-radius-pill);
    border: 1px solid rgba(96, 128, 98, 0.12);
    animation: pvq-badgePulse 3s ease infinite;
    margin-top: 12px;
    display: inline-block;
}
.pvq-settings__footer {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--pvq-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.pvq-settings__footer-info { font-size: 12px; color: var(--pvq-text-muted); }
.pvq-settings__footer-info a { color: var(--pvq-primary); text-decoration: none; }
.pvq-settings__footer-info a:hover { color: var(--pvq-primary-hover); text-decoration: underline; }
.pvq-settings__footer-links { display: flex; gap: 16px; }
.pvq-settings__footer-link {
    font-size: 12px;
    color: var(--pvq-primary);
    text-decoration: none;
    transition: var(--pvq-transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.pvq-settings__footer-link:hover { color: var(--pvq-primary-hover); text-decoration: underline; }
.pvq-settings__footer-link--disabled { color: var(--pvq-text-muted); cursor: not-allowed; opacity: 0.6; }
.pvq-settings__footer-link--disabled:hover { color: var(--pvq-text-muted); text-decoration: none; }

/* ===== 选项卡导航 + 磁吸滑块 ===== */
.pvq-tabs {
    display: flex;
    gap: 4px;
    background: var(--pvq-surface);
    border: 1px solid var(--pvq-border-light);
    border-radius: var(--pvq-radius-pill);
    padding: 4px;
    width: fit-content;
    max-width: 100%;
    margin-bottom: 24px;
    position: relative;
    animation: pvq-slideUp 0.5s var(--pvq-ease) 0.15s both;
}
.pvq-tabs__slider {
    position: absolute;
    top: 4px;
    left: 4px;
    height: calc(100% - 8px);
    background: var(--pvq-primary-gradient);
    border-radius: var(--pvq-radius-pill);
    box-shadow: var(--pvq-shadow-primary);
    transition: transform 0.45s var(--pvq-ease-magnet), width 0.45s var(--pvq-ease-magnet);
    z-index: 0;
}
.pvq-tab {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    background: transparent;
    color: var(--pvq-text-secondary);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--pvq-radius-pill);
    cursor: pointer;
    transition: color 0.35s var(--pvq-ease), background 0.2s ease;
    white-space: nowrap;
    position: relative;
    z-index: 1;
}
.pvq-tab:hover:not(.pvq-tab--active) { background: var(--pvq-primary-light); color: var(--pvq-primary); }
.pvq-tab--active { background: transparent; color: #fff; }
.pvq-tab i,
.pvq-tab__icon { font-size: 14px; transition: transform 0.3s var(--pvq-ease-bounce); }
.pvq-tab:hover i,
.pvq-tab:hover .pvq-tab__icon { transform: scale(1.1); }
.pvq-tab--active i,
.pvq-tab--active .pvq-tab__icon { animation: pvq-iconBounce 0.4s var(--pvq-ease-bounce); }

.pvq-tab-content { display: none; }
.pvq-tab-content--active {
    display: block;
    animation: pvq-tabEnter 0.4s var(--pvq-ease) forwards;
}

/* ===== 响应式 ===== */
@media (max-width: 600px) {
    .pvq-settings { padding: 16px 12px 48px; }
    .pvq-settings__header { flex-wrap: wrap; }
    .pvq-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .pvq-tab { font-size: 12px; padding: 8px 12px; }
    .pvq-settings__footer { flex-direction: column; gap: 12px; align-items: flex-start; }
}