/* ==========================================================================
   翁法罗斯一年历 —— 样式表
   --------------------------------------------------------------------------
   结构：
     1. 设计令牌（明暗两套主题）
     2. 基础重置与页面骨架
     3. 悬浮工具按钮（返回 / 主题 / 一年历显隐）
     4. 主体容器与图片区
     5. 月历网格
     6. 底部信息栏
     7. 胶囊底栏（一年历隐藏时显示）
     8. 动效
     9. 响应式断点
   ========================================================================== */

/* ==========================================================================
   1. 设计令牌
   --------------------------------------------------------------------------
   颜色随主题切换（见 [data-theme="dark"]），尺寸类令牌两套主题共用。
   --current-theme-color 由 JS 按当月主题色写入，日历不再直接改内联样式。
   ========================================================================== */
:root {
    /* --- 明色主题（默认） --- */
    --bg-color: #ffffff;
    --text-color: #333333;
    --calendar-bg: rgba(255, 255, 255, 0.9);
    --footer-bg: rgba(240, 240, 240, 0.85);
    --day-header-bg: rgba(240, 240, 240, 0.85);
    --calendar-day-bg: rgba(255, 255, 255, 0.9);
    --calendar-day-empty-bg: rgba(249, 249, 249, 0.7);
    --weekend-day-bg: rgba(240, 248, 255, 0.8);
    --border-color: #ccc;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --tooltip-bg: rgba(255, 255, 255, 0.95);
    --info-color: #666;
    --link-color: #eb7ea3;
    --link-hover-color: #d65c8a;
    --capsule-bg: rgba(255, 255, 255, 0.9);
    --capsule-shadow: rgba(0, 0, 0, 0.15);
    --day-text-color: #333;
    --header-text-color: #333;
    --stat-text-color: #666;

    /* --- 浮动圆形按钮 --- */
    --float-btn-bg: rgba(0, 0, 0, 0.5);
    --float-btn-bg-hover: rgba(0, 0, 0, 0.7);
    --float-btn-color: #ffffff;
    --float-btn-size: 36px;
    --float-btn-offset: 20px;

    /* --- 图片区文字：始终白色，保证在背景图上可读 --- */
    --overlay-text: #ffffff;
    --overlay-text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);

    /* --- 尺寸 --- */
    --radius-lg: 15px;
    --radius-md: 5px;
    --radius-pill: 30px;
    --calendar-max-width: 1200px;
    --calendar-height: 85vh;
    --day-header-height: 40px;
    --calendar-gap: 2px;

    /* --- 层级 --- */
    --z-toolbar: 1000;
    --z-capsule: 999;
    --z-tooltip: 10;

    /* --- 动效 --- */
    --theme-transition: background-color 0.5s ease, color 0.5s ease;
    --fade-transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --calendar-bg: rgba(30, 30, 30, 0.9);
    --footer-bg: rgba(40, 40, 40, 0.85);
    --day-header-bg: rgba(50, 50, 50, 0.85);
    --calendar-day-bg: rgba(40, 40, 40, 0.9);
    --calendar-day-empty-bg: rgba(45, 45, 45, 0.7);
    --weekend-day-bg: rgba(60, 60, 80, 0.8);
    --border-color: #555;
    --shadow-color: rgba(0, 0, 0, 0.7);
    --tooltip-bg: rgba(40, 40, 40, 0.95);
    --info-color: #aaa;
    --link-color: #ff9eb3;
    --link-hover-color: #ff7a9d;
    --capsule-bg: rgba(40, 40, 40, 0.9);
    --capsule-shadow: rgba(0, 0, 0, 0.4);
    --day-text-color: #f0f0f0;
    --header-text-color: #f0f0f0;
    --stat-text-color: #aaa;
}

/* ==========================================================================
   2. 基础重置与页面骨架
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: var(--bg-color) url('/img/amphoreus.webp') center / cover no-repeat;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--float-btn-offset);
    overflow: hidden;
    transition: var(--theme-transition);
}

/* ==========================================================================
   3. 悬浮工具按钮
   --------------------------------------------------------------------------
   三个圆形按钮共享 .float-btn 外观：返回主页（左）、主题切换、一年历显隐。
   ========================================================================== */
.home-btn,
.theme-toggle-btn,
.toggle-calendar-btn {
    position: fixed;
    top: var(--float-btn-offset);
    z-index: var(--z-toolbar);
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--float-btn-size);
    height: var(--float-btn-size);
    padding: 0;
    border: none;
    border-radius: 50%;
    background: var(--float-btn-bg);
    color: var(--float-btn-color);
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 2px 10px var(--shadow-color);
    transition: background 0.3s;
}

.home-btn:hover,
.theme-toggle-btn:hover,
.toggle-calendar-btn:hover {
    background: var(--float-btn-bg-hover);
}

.home-btn {
    left: var(--float-btn-offset);
}

.toggle-calendar-btn {
    right: var(--float-btn-offset);
}

.theme-toggle-btn {
    right: calc(var(--float-btn-offset) + 45px);
}

.toggle-icon {
    width: 20px;
    height: 20px;
    display: block;
}

.theme-toggle-icon {
    width: 24px;
    height: 24px;
    display: block;
    transform: translate(-1px, 2px); /* 视觉居中微调 */
}

/* ==========================================================================
   4. 主体容器与图片区
   ========================================================================== */
.calendar-container {
    width: 100%;
    max-width: var(--calendar-max-width);
    height: var(--calendar-height);
    background: var(--calendar-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-color);
    display: grid;
    grid-template-columns: 1fr 1fr; /* 图片区 / 月历区各占一半 */
    grid-template-rows: 1fr 50px; /* 底部信息栏固定高度 */
    grid-template-areas:
        "image calendar"
        "footer footer";
    transition: var(--fade-transition), background 0.5s ease, box-shadow 0.5s ease;
}

/* 显隐切换动画期间才启用透明度过渡 */
.calendar-container.animating,
.capsule-footer.animating {
    transition: var(--fade-transition);
}

/* 一年历收起状态：由 JS 切换 .is-hidden，视觉上等价于原实现的内联样式 */
.calendar-container.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.image-section {
    grid-area: image;
    position: relative;
    min-width: 0;
    min-height: 0;
    height: 100%;
    padding: var(--float-btn-offset);
    overflow: hidden;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* --- 左下角：月份代称 + 本月幸运花 --- */
.month-display {
    position: absolute;
    left: var(--float-btn-offset);
    bottom: var(--float-btn-offset);
    z-index: 2;
    padding: 10px;
}

.month-text-group {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    color: var(--overlay-text);
    text-shadow: var(--overlay-text-shadow);
}

.month-text {
    font-size: 3em;
    font-weight: bold;
    line-height: 1;
    margin: 0;
    align-self: flex-end;
}

.lucky-flower-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-left: 10px;
    color: var(--overlay-text);
    text-shadow: var(--overlay-text-shadow);
}

.lucky-flower-name {
    font-size: 1.5em;
    margin-bottom: 2px;
}

.lucky-flower-label {
    font-size: 0.8em;
}

/* --- 右上角：当月寄语 --- */
.month-title {
    position: absolute;
    right: var(--float-btn-offset);
    top: var(--float-btn-offset);
    z-index: 2;
    max-width: calc(100% - 120px); /* 给右上角的显隐按钮留出空间 */
    padding: 10px;
    text-align: right;
    color: var(--overlay-text);
    text-shadow: var(--overlay-text-shadow);
}

.month-title-message {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.month-title-line1,
.month-title-line2 {
    font-size: 0.9em;
    line-height: 1.4;
    margin-bottom: 3px;
}

/* ==========================================================================
   5. 月历网格
   ========================================================================== */
.calendar-section {
    grid-area: calendar;
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    padding: var(--float-btn-offset);
    overflow: hidden;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--float-btn-offset);
}

.nav-btn {
    padding: 10px 15px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--current-theme-color, var(--link-color));
    color: var(--overlay-text);
    font-size: 1.2em;
    cursor: pointer;
    box-shadow: 0 2px 5px var(--shadow-color);
    transition: background 0.5s ease, opacity 0.2s ease;
}

.nav-btn:hover {
    opacity: 0.8;
}

#currentMonthYear {
    font-size: 1.5em;
    color: var(--current-theme-color, var(--link-color));
    text-shadow: 0 0 2px rgba(255, 255, 255, 0.7);
    transition: color 0.5s ease;
}

[data-theme="dark"] #currentMonthYear {
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.5);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: var(--day-header-height) 1fr;
    gap: var(--calendar-gap);
    height: 100%;
    overflow: hidden;
    background: var(--calendar-day-bg);
    border: 1px solid var(--border-color);
    border-top: none;
}

.day-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: var(--day-header-bg);
    border-top: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
    color: var(--header-text-color);
    font-weight: bold;
}

.day-header:first-child {
    border-left: none;
}

/* 日期容器：占满网格第二行，固定 6 行 × 7 列 */
#calendarDays {
    display: grid;
    grid-column: 1 / -1;
    grid-row: 2;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: var(--calendar-gap);
    overflow-y: auto;
}

.calendar-day {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: var(--calendar-day-bg);
    border-top: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
    color: var(--day-text-color);
    overflow: hidden;
}

.calendar-day:first-child {
    border-left: none;
}

.calendar-day.empty {
    background: var(--calendar-day-empty-bg);
}

/* 周末底色由 JS 按当月主题色覆盖（见 applyThemeColor） */
.calendar-day.weekend {
    background: var(--weekend-day-bg);
}

.infinity-day {
    font-size: 1.2em;
    font-weight: bold;
}

/* ==========================================================================
   6. 底部信息栏
   ========================================================================== */
.footer {
    grid-area: footer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100%;
    padding: 10px var(--float-btn-offset);
    background: var(--footer-bg);
    color: var(--info-color);
    font-size: 0.9em;
    transition: var(--theme-transition);
}

.info-container {
    display: flex;
    align-items: center;
    gap: 0;
}

/* 可点击的信息项：悬停 / 点按均可展开提示气泡 */
.info-item {
    position: relative;
    display: inline-block;
}

.info-label {
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline dotted;
}

.info-label:hover {
    color: var(--link-color);
}

.info-tooltip {
    position: absolute;
    bottom: 100%;
    left: 0;
    z-index: var(--z-tooltip);
    width: max-content;
    max-width: 300px;
    padding: 8px 12px;
    background: var(--tooltip-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px var(--shadow-color);
    font-size: 0.9em;
    line-height: 1.4;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s, visibility 0.3s, background-color 0.5s ease, color 0.5s ease;
}

.info-item:hover .info-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 触屏设备点击展开时由 JS 添加 .is-open */
.info-item.is-open .info-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.footer-separator,
.capsule-separator {
    margin: 0 8px;
    color: var(--info-color);
    flex-shrink: 0;
}

.links {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    min-width: 0;
}

.links a {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.blog-link,
.cyrene-link,
.email-link {
    color: var(--link-color);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.3s ease;
}

.blog-link:hover,
.cyrene-link:hover,
.email-link:hover {
    color: var(--link-hover-color);
    text-decoration: underline;
}

/* ==========================================================================
   7. 胶囊底栏（一年历隐藏时显示）
   ========================================================================== */
.capsule-footer {
    position: fixed;
    bottom: var(--float-btn-offset);
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-capsule);
    width: 90%;
    max-width: 600px;
    opacity: 0;
    visibility: hidden;
    transition: var(--fade-transition);
}

.capsule-footer.show {
    opacity: 1;
    visibility: visible;
}

.capsule-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
    padding: 12px var(--float-btn-offset);
    background: var(--capsule-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 20px var(--capsule-shadow);
    color: var(--stat-text-color);
    font-size: 0.9em;
    line-height: 1.4;
    text-align: center;
    transition: var(--theme-transition);
}

.capsule-content .info-tooltip {
    max-width: 250px;
    padding: 6px 10px;
}

.capsule-separator {
    color: var(--stat-text-color);
}

/* ==========================================================================
   8. 动效
   ========================================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 从胶囊底栏切回日历时的淡入 */
.calendar-fade-in {
    animation: fadeIn 0.5s ease-in forwards;
}

/* ==========================================================================
   9. 响应式断点
   --------------------------------------------------------------------------
   768px / 600px 高度 或 767px 宽度以下：改为纵向排列，允许滚动
   400px 宽竖屏：进一步压缩图片区高度
   ========================================================================== */

/* 纵向布局下的公共调整 */
@media screen and (max-width: 767px), screen and (max-height: 600px) {
    body {
        align-items: flex-start; /* 允许纵向滚动 */
        padding: 10px;
    }

    .calendar-container {
        height: auto;
        max-height: none;
        min-height: 100vh;
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        grid-template-areas:
            "image"
            "calendar"
            "footer";
        overflow-y: auto;
    }

    .image-section {
        height: 40vh;
        min-height: 200px;
        max-height: 300px;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .month-display {
        bottom: 15px;
    }

    .month-text {
        font-size: 2em;
    }

    .month-title {
        top: 15px;
    }

    .calendar-grid {
        grid-template-rows: 30px 1fr;
        height: auto;
    }

    #calendarDays {
        max-height: 250px;
    }

    .footer {
        display: none;
    }
}

/* 窄屏横屏 / 小屏竖屏：底部信息栏换取行内布局 */
@media screen and (max-width: 768px) {
    .footer {
        flex-direction: column;
        gap: 5px;
        align-items: stretch;
    }

    .links {
        justify-content: center;
        order: 1;
    }
}

/* 手机竖屏：压缩图片区，隐藏底部信息栏 */
@media screen and (max-width: 400px) and (orientation: portrait) {
    .calendar-container {
        height: auto;
        grid-template-rows: 35vh 1fr auto;
        border-radius: var(--radius-lg);
    }

    .image-section {
        height: 35vh;
        max-height: none;
    }

    .calendar-grid,
    #calendarDays {
        height: 100%;
        max-height: none;
    }

    .footer {
        display: none;
    }

    .capsule-content {
        font-size: 0.8em;
        padding: 10px 15px;
    }
}