/*!
 * lightsns-redesign.css
 * 赶蛙教育 AIO 主题 — 视觉复刻 lightsns.com（Phase 1+2）
 * 加载顺序：在 aio.global.css 与 gwye-sns.css 之后加载，作为视觉覆写层。
 * 设计原则：不改动 header/footer/log_list 等任何模板的 DOM 结构与后端函数调用，
 *          仅通过 CSS 覆写全局头部视觉、引入设计令牌（颜色/圆角/阴影/间距）。
 *          移动端 offcanvas、gwye-sns.js 钩子、AioNavigation / AioBlogLOGO / gwye_user_menu
 *          等所有现有行为保持不变。
 */

/* ===================== 设计令牌 Design Tokens ===================== */
:root {
    --bs-primary: #2B6FE0;
    --bs-primary-rgb: 43, 111, 224;
    --ls-bg: #F7F8FA;
    --ls-surface: #FFFFFF;
    --ls-border: #E8EAEC;
    --ls-text: #2C3E50;
    --ls-text-2: #86909C;
    --ls-text-3: #C9CDD4;
    --ls-primary: #2B6FE0;
    --ls-primary-hover: #1E5BC9;
    --ls-primary-soft: #E8F0FE;
    --ls-danger: #FF6B81;
    --ls-warn: #FFB84D;
    --ls-success: #4CD964;
    --ls-radius-sm: 8px;
    --ls-radius: 12px;
    --ls-radius-lg: 16px;
    --ls-radius-pill: 999px;
    --ls-shadow: 0 1px 3px rgba(0, 0, 0, .04);
    --ls-shadow-card: 0 1px 4px rgba(0, 0, 0, .05);
    --ls-shadow-hover: 0 4px 16px rgba(43, 111, 224, .12);
    --ls-header-h: 60px;
    --ls-header-bg: #FFFFFF;
    --ls-gradient-blue: linear-gradient(135deg, #5BA8FF 0%, #2B6FE0 100%);
    --ls-gradient-pink: linear-gradient(135deg, #FF8AA8 0%, #FF5C7C 100%);
    --ls-gradient-purple: linear-gradient(135deg, #A48BFF 0%, #7B5BFF 100%);
    --ls-font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}

/* ===================== 全局基线 ===================== */
body {
    background-color: var(--ls-bg);
    color: var(--ls-text);
    font-family: var(--ls-font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--ls-text); }
a:hover { color: var(--ls-primary); }

/* ===================== 全局头部（lightsns 风格白底顶栏） ===================== */
.aio-header {
    background: var(--ls-header-bg);
    border-bottom: 1px solid var(--ls-border);
    height: var(--ls-header-h);
    position: sticky;
    top: 0;
    z-index: 1020;
    box-shadow: var(--ls-shadow);
}
.aio-header > section,
.aio-header > .flex-v-between {
    height: 100%;
    align-items: center;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

.aio-header .logo {
    display: inline-flex;
    align-items: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--ls-text);
    text-decoration: none;
    gap: 8px;
    margin-right: 24px;
}
.aio-header .logo img,
.aio-header .logo svg { max-height: 32px; display: block; }

.aio-header .navbar {
    align-items: center;
    gap: 2px;
    margin: 0 8px;
    padding: 0;
    list-style: none;
}
@media (min-width: 992px) {
    .aio-header .navbar { display: flex !important; }
}
.aio-header .navbar ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 2px;
}
.aio-header .navbar li { display: inline-flex; }
.aio-header .navbar a,
.aio-header .navbar li a {
    display: inline-flex !important;
    align-items: center;
    gap: 4px;
    padding: 7px 14px !important;
    border-radius: var(--ls-radius-pill) !important;
    color: var(--ls-text) !important;
    background: transparent !important;
    font-size: 14px !important;
    font-weight: 500;
    text-decoration: none;
    transition: background-color .15s ease, color .15s ease;
    line-height: 1.2;
}
.aio-header .navbar a:hover,
.aio-header .navbar li a:hover,
.aio-header .navbar a:focus {
    background: var(--ls-primary-soft) !important;
    color: var(--ls-primary) !important;
}
.aio-header .navbar a.current,
.aio-header .navbar li.current a,
.aio-header .navbar li.active a,
.aio-header .navbar a.active {
    background: var(--ls-primary-soft) !important;
    color: var(--ls-primary) !important;
}
.aio-header .navbar a i,
.aio-header .navbar li a i { font-size: 15px; }

.aio-header .nav-subsidiary { margin-left: auto; }
.aio-header .nav-subsidiary .d-flex { gap: 10px; align-items: center; }

.aio-header a.btn[href*='keyword'] {
    display: inline-flex !important;
    align-items: center;
    gap: 6px;
    padding: 7px 14px !important;
    border: 1px solid var(--ls-border) !important;
    border-radius: var(--ls-radius-pill) !important;
    background: #F5F6F7 !important;
    color: var(--ls-text-2) !important;
    font-size: 13px !important;
    font-weight: 500;
    text-decoration: none;
    transition: border-color .15s, color .15s, background-color .15s;
}
.aio-header a.btn[href*='keyword']:hover {
    border-color: var(--ls-primary) !important;
    color: var(--ls-primary) !important;
    background: #fff !important;
}
.aio-header a.btn[href*='keyword'] i { font-size: 14px; }

.aio-header .btn-action-account,
.aio-header a.btn[href*='account.php?action=signin'] {
    background: var(--ls-primary) !important;
    color: #fff !important;
    border: none !important;
    padding: 7px 20px !important;
    border-radius: var(--ls-radius-pill) !important;
    font-size: 14px !important;
    font-weight: 500;
    display: inline-flex !important;
    align-items: center;
    gap: 4px;
    box-shadow: 0 2px 6px rgba(43, 111, 224, .25);
    transition: background-color .15s, box-shadow .15s, transform .15s;
}
.aio-header .btn-action-account:hover,
.aio-header a.btn[href*='account.php?action=signin']:hover {
    background: var(--ls-primary-hover) !important;
    color: #fff !important;
    box-shadow: 0 4px 12px rgba(43, 111, 224, .35);
    transform: translateY(-1px);
}
.aio-header .btn-action-account i { font-size: 14px; }

.aio-header .gwye-user-menu,
.aio-header .gwye-user-menu * { display: inline-flex; align-items: center; gap: 6px; }

.aio-header .btn-nav-box,
.aio-header .btn-aside-box {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--ls-text);
    cursor: pointer;
    border-radius: var(--ls-radius-sm);
}
.aio-header .btn-nav-box:hover,
.aio-header .btn-aside-box:hover {
    background: var(--ls-primary-soft);
    color: var(--ls-primary);
}
.aio-header .nav-burger,
.aio-header .aside-burger {
    width: 18px;
    height: 2px;
    background: currentColor;
    position: relative;
}
.aio-header .nav-burger::before,
.aio-header .nav-burger::after,
.aio-header .aside-burger::before,
.aio-header .aside-burger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background: currentColor;
}
.aio-header .nav-burger::before { top: -6px; }
.aio-header .nav-burger::after  { top: 6px; }
.aio-header .aside-burger::before { top: -6px; }
.aio-header .aside-burger::after  { top: 6px; }

.offcanvas.offcanvas-menu {
    background: #fff;
    border-right: 1px solid var(--ls-border) !important;
}
.offcanvas.offcanvas-menu .offcanvas-header { border-bottom: 1px solid var(--ls-border); }

@media (max-width: 991.98px) {
    .aio-header .logo { margin-right: 0; }
    .aio-header .nav-subsidiary { margin-left: auto; }
}

/* ===================== Phase 3: 首页 3 列布局（lightsns 风格） ===================== */
.ls-home {
    display: grid;
    grid-template-columns: 196px minmax(0, 1fr) 320px;
    gap: 20px;
    align-items: start;
}
.ls-home > .aio-main { flex: none; min-width: 0; width: 100%; }
.ls-home > .aio-aside {
    width: auto !important;
    max-width: none !important;
    min-width: 0 !important;
    margin-left: 0 !important;
}

/* 左侧竖向图标导航 */
.ls-sidenav {
    position: sticky;
    top: calc(var(--ls-header-h) + 16px);
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius);
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    box-shadow: var(--ls-shadow);
}
.ls-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--ls-radius-sm);
    color: var(--ls-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background-color .15s ease, color .15s ease;
}
.ls-nav-item i { font-size: 18px; color: var(--ls-text-2); transition: color .15s ease; }
.ls-nav-item:hover { background: var(--ls-primary-soft); color: var(--ls-primary); }
.ls-nav-item:hover i { color: var(--ls-primary); }
.ls-nav-item.active { background: var(--ls-primary-soft); color: var(--ls-primary); }
.ls-nav-item.active i { color: var(--ls-primary); }
.ls-nav-item-me { margin-top: 4px; border-top: 1px solid var(--ls-border); padding-top: 12px; }

/* 右侧：签到卡 + 渐变快捷菜单 */
.ls-aside-top { display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }
.ls-checkin {
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius);
    padding: 16px;
    box-shadow: var(--ls-shadow);
}
.ls-checkin-title { font-size: 15px; font-weight: 600; margin: 0 0 4px; }
.ls-checkin-sub { font-size: 12px; color: var(--ls-text-2); margin: 0 0 12px; }
.ls-checkin-btn {
    display: block; width: 100%; text-align: center;
    background: var(--ls-gradient-blue); color: #fff;
    border: none; border-radius: var(--ls-radius-pill);
    padding: 9px 0; font-size: 14px; font-weight: 600; cursor: pointer;
    box-shadow: 0 4px 12px rgba(43, 111, 224, .25);
    transition: transform .15s ease, box-shadow .15s ease;
}
.ls-checkin-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(43, 111, 224, .35); }

.ls-quick {
    background: var(--ls-surface);
    border: 1px solid var(--ls-border);
    border-radius: var(--ls-radius);
    padding: 14px;
    box-shadow: var(--ls-shadow);
}
.ls-quick-title { font-size: 13px; color: var(--ls-text-2); margin: 0 0 12px; font-weight: 500; }
.ls-quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ls-quick-item {
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    padding: 12px 4px; border-radius: var(--ls-radius-sm);
    color: #fff; text-decoration: none; font-size: 12px; font-weight: 500;
}
.ls-quick-item i { font-size: 20px; }
.ls-quick-item.g-blue { background: var(--ls-gradient-blue); }
.ls-quick-item.g-pink { background: var(--ls-gradient-pink); }
.ls-quick-item.g-purple { background: var(--ls-gradient-purple); }
.ls-quick-item:hover { filter: brightness(1.05); color: #fff; }

/* 平板：收起左栏，保留中+右 */
@media (max-width: 1199.98px) and (min-width: 992px) {
    .ls-home { grid-template-columns: minmax(0, 1fr) 300px; }
    .ls-sidenav { display: none; }
}
/* 移动端：单列 */
@media (max-width: 991.98px) {
    .ls-home { display: block; }
    .ls-sidenav { display: none; }
    .ls-aside-top { margin-bottom: 0; }
}