/**
 * 页面壳层样式（layout-shell.css）
 * - 负责页面结构壳：主容器、顶栏、页脚、模式切换、首屏初始 Tab 呈现。
 * - 不包含具体业务模块（如笔记、参数弹层、解卦卡片）样式。
 * - 建议在 base.css 之后、业务组件样式之前加载。
 */
.skip-to-main {
    position: absolute;
    left: 0;
    top: -100px;
    z-index: 100003;
    padding: 10px 16px;
    background: #2f6b52;
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 8px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.skip-to-main:focus {
    top: 0;
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* 鼠标点进主内容会 focus 到 main（tabindex=-1）；仅键盘 focus-visible 显示描边，避免顶栏下像多一条线 */
#main-content:focus {
    outline: none;
}

#main-content:focus-visible {
    outline: 2px solid #2f6b52;
    outline-offset: 2px;
}

.liuyao-main {
    display: block;
    min-width: 0;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    border-radius: 0 0 20px 20px;
    box-shadow:
        0 4px 6px rgba(26, 61, 50, 0.06),
        0 16px 40px rgba(26, 61, 50, 0.14);
    border: 1px solid rgba(47, 107, 82, 0.08);
    border-top: none;
    overflow: hidden;
}

.header {
    color: #f4faf7;
    padding: 0;
    text-align: center;
    position: relative;
}

.header.liuyao-header-bar {
    background: #2a6350; 
}

.header h1 {
    font-size: 28px;
    font-weight: 600;
}

/* 顶栏：标题居中；右侧按钮与标题垂直居中，整体压低高度 */
.liuyao-header-toolbar {
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 5px 10px 6px;
    box-sizing: border-box;
}

.liuyao-header-center {
    text-align: center;
    padding: 0 78px;
    box-sizing: border-box;
}

.liuyao-header-title {
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    z-index: 1;
    margin: 0;
    padding: 0;
    font-size: 1.42rem;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0.06em;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.22);
}

.liuyao-header-auth-btn {
    position: absolute;
    top: 50%;
    right: max(10px, env(safe-area-inset-right, 0px));
    transform: translateY(-50%);
    z-index: 2;
    padding: 5px 13px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    border-radius: 999px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition:
        background 0.2s ease,
        border-color 0.2s ease,
        color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.12s ease;
}

.liuyao-header-auth-btn.is-login,
.liuyao-header-auth-btn.is-logout {
    color: #1a3d32;
    background: linear-gradient(180deg, rgba(255, 251, 242, 0.96) 0%, rgba(245, 236, 220, 0.92) 100%);
    border: 1px solid rgba(255, 255, 255, 0.55);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.liuyao-header-auth-btn:active {
    transform: translateY(-50%) scale(0.98);
}

.liuyao-header-auth-btn:focus-visible {
    outline: 2px solid rgba(255, 248, 220, 0.95);
    outline-offset: 2px;
}

.footer {
    background: #f8f9fa;
    padding: 16px 20px 20px;
    text-align: center;
    color: #666;
    border-top: 1px solid #e9ecef;
    width: 100%;
    box-sizing: border-box;
    font-size: 14px;
}

.mode-selector {
    display: flex;
    background: #f5f5f5;
    border-bottom: 2px solid #e0e0e0;
}

.mode-btn {
    min-width: 0;
    padding: 14px 6px;
    border: none;
    background: transparent;
    font-size: 15px;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

/* 顶栏四标签宽度：自动 / 手动 各 30%，卦录 / 笔记 各 20%（flex  grow 3:3:2:2） */
.mode-btn[data-mode='auto'],
.mode-btn[data-mode='manual'] {
    flex: 3 1 0%;
}

.mode-btn[data-mode='gua-records'],
.mode-btn[data-mode='notes'] {
    flex: 2 1 0%;
}

.mode-btn.active {
    color: #2f6b52;
    font-weight: 600;
}

.mode-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #2f6b52;
}

.mode-content {
    display: none;
    padding: 5px 5px;
}

.mode-content.active {
    display: block;
}

/* 首屏：liuyao.js 运行前即显示上次停留的 Tab（index.php head 写入 html[data-liuyao-initial-mode]） */
html[data-liuyao-initial-mode='auto'] #auto-mode.mode-content,
html[data-liuyao-initial-mode='manual'] #manual-mode.mode-content,
html[data-liuyao-initial-mode='gua-records'] #gua-records-mode.mode-content,
html[data-liuyao-initial-mode='notes'] #notes-mode.mode-content {
    display: block !important;
}

html[data-liuyao-initial-mode='auto'] .mode-btn[data-mode='auto'],
html[data-liuyao-initial-mode='manual'] .mode-btn[data-mode='manual'],
html[data-liuyao-initial-mode='gua-records'] .mode-btn[data-mode='gua-records'],
html[data-liuyao-initial-mode='notes'] .mode-btn[data-mode='notes'] {
    color: #2f6b52;
    font-weight: 600;
}

html[data-liuyao-initial-mode='auto'] .mode-btn[data-mode='auto']::after,
html[data-liuyao-initial-mode='manual'] .mode-btn[data-mode='manual']::after,
html[data-liuyao-initial-mode='gua-records'] .mode-btn[data-mode='gua-records']::after,
html[data-liuyao-initial-mode='notes'] .mode-btn[data-mode='notes']::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #2f6b52;
}

/* ?note=id（含从 note.php 302 重定向）深链：在 JS 打开全屏笔记前不占位显示笔记列表（避免「先列表后浮层」） */
html[data-liuyao-note-deeplink='1'] #notes-mode .notes-entry-container,
html[data-liuyao-note-deeplink='1'] #notes-mode .notes-admin-container {
    visibility: hidden;
}