/* =========================================
   1. 苹果 macOS 灵动液态玻璃 全局变量
   ========================================= */
:root {
    --apple-glass-bg: rgba(255, 255, 255, 0.25);      
    --apple-glass-dark: rgba(255, 255, 255, 0.45); 
    --apple-glass-border: rgba(255, 255, 255, 0.3);   
    --apple-glass-edge: inset 0 1px 1px rgba(255, 255, 255, 0.6); 
    --apple-glass-shadow: 0 8px 32px -4px rgba(0,0,0,0.12); 
    --apple-text: #1d1d1f; 
    --divider-color: rgba(0, 0, 0, 0.1); 
    --btn-bg: rgba(255, 255, 255, 0.35);
    --btn-bg-hover: rgba(255, 255, 255, 0.6);
    --apple-blur: 40px;
    --apple-radius: 20px;                             
    --apple-spring: cubic-bezier(0.175, 0.885, 0.32, 1.15); 
}

body.dark-mode {
    --apple-glass-bg: rgba(20, 20, 22, 0.35);      
    --apple-glass-dark: rgba(10, 10, 12, 0.55);
    --apple-glass-border: rgba(255, 255, 255, 0.1);   
    --apple-glass-edge: inset 0 1px 1px rgba(255, 255, 255, 0.15); 
    --apple-glass-shadow: 0 8px 32px -4px rgba(0,0,0,0.4); 
    --apple-text: #f5f5f7; 
    --divider-color: rgba(255, 255, 255, 0.15);
    --btn-bg: rgba(40, 40, 45, 0.45);
    --btn-bg-hover: rgba(70, 70, 75, 0.65);
}

html { scroll-behavior: smooth; overflow-x: hidden; }
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", sans-serif;
    -webkit-font-smoothing: antialiased; 
    letter-spacing: 0.015em; padding-top: 70px; 
    background: #cfcfcf url('./image/bgi9.png') no-repeat center center fixed;
    background-size: cover; min-height: 100vh; overflow: hidden; 
    color: var(--apple-text); transition: color 0.4s ease; 
}

/* =========================================
   2. 导航栏 
   ========================================= */
.nav-container {
    position: fixed; top: 0; left: 0; width: 100%; height: 70px;
    background: var(--apple-glass-bg); backdrop-filter: blur(var(--apple-blur)) saturate(150%);
    border-bottom: 1px solid var(--apple-glass-border); z-index: 2000;
    display: flex; justify-content: space-between; align-items: center; padding: 0 30px;
}
.nav-left { display: flex; align-items: center; gap: 15px; } 

.menu-toggle, .theme-toggle, .loggin, .weather-toggle {
    position: relative; background: var(--btn-bg); backdrop-filter: blur(var(--apple-blur));
    border: 1px solid var(--apple-glass-border); box-shadow: var(--apple-glass-edge), 0 2px 6px rgba(0,0,0,0.05);
    color: var(--apple-text); cursor: pointer; transition: all 0.3s var(--apple-spring);
    display: flex; align-items: center; justify-content: center;
}
.menu-toggle { font-size: 18px; padding: 8px 16px; border-radius: 12px; }
.theme-toggle, .weather-toggle { width: 38px; height: 38px; border-radius: 50%; }
.loggin { padding: 8px 18px; border-radius: 20px; font-size: 13px; font-weight: 600; min-width: 65px; }
.menu-toggle:hover, .theme-toggle:hover, .loggin:hover, .weather-toggle:hover {
    background: var(--btn-bg-hover); transform: scale(1.05) translateY(-1px);
}

/* 中间：多引擎搜索框 */
.nav-center { position: absolute; left: 50%; transform: translateX(-50%); z-index: 1005; display: flex; justify-content: center; width: 50%; min-width: 400px; max-width: 700px; }
.smart-search-wrapper { position: relative; display: flex; align-items: center; width: 200px; height: 46px; background: var(--btn-bg); backdrop-filter: blur(var(--apple-blur)); border: 1px solid var(--apple-glass-border); border-radius: 30px; box-shadow: inset 0 2px 4px rgba(0,0,0,0.04), 0 1px 0 rgba(255,255,255,0.4); transition: all 0.5s var(--apple-spring); }
.smart-search-wrapper:hover, .smart-search-wrapper.is-active, .smart-search-wrapper:has(.custom-select-wrapper.open) { width: 450px; background: var(--btn-bg-hover); box-shadow: inset 0 1px 2px rgba(0,0,0,0.02), var(--apple-glass-edge); border-color: var(--apple-glass-border); }
.custom-select-wrapper { position: relative; user-select: none; z-index: 1005; display: flex; align-items: center; margin-left: 0; transition: margin-left 0.4s var(--apple-spring); }
.smart-search-wrapper:hover .custom-select-wrapper, .smart-search-wrapper.is-active .custom-select-wrapper, .smart-search-wrapper:has(.custom-select-wrapper.open) .custom-select-wrapper { margin-left: 14px; }
.custom-select-trigger { width: max-content; max-width: 0; padding: 8px 0; opacity: 0; overflow: hidden; white-space: nowrap; box-sizing: border-box; color: var(--apple-text); font-size: 14px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; border-right: 1px solid transparent; pointer-events: none; transition: max-width 0.4s var(--apple-spring), padding 0.4s var(--apple-spring), opacity 0.3s ease, border-color 0.4s ease; }
.smart-search-wrapper:hover .custom-select-trigger, .smart-search-wrapper.is-active .custom-select-trigger, .smart-search-wrapper:has(.custom-select-wrapper.open) .custom-select-trigger { max-width: 150px; padding: 8px 12px; opacity: 1; pointer-events: auto; border-right-color: var(--divider-color); }
.custom-select-trigger:hover { color: #0071e3; }

.custom-options { position: absolute; top: calc(100% + 15px); left: 50%; transform: translateX(-50%) translateY(-10px) scale(0.95); width: 130px; background: var(--apple-glass-bg); backdrop-filter: blur(var(--apple-blur)) saturate(180%); border: 1px solid var(--apple-glass-border); box-shadow: var(--apple-glass-edge), var(--apple-glass-shadow); border-radius: 18px; opacity: 0; visibility: hidden; transition: all 0.3s var(--apple-spring); list-style: none; padding: 8px; margin: 0; }
.custom-options::before { content: ""; position: absolute; top: -20px; left: 0; width: 100%; height: 20px; }
.custom-select-wrapper.open .custom-options { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0) scale(1); }
.custom-options li { padding: 10px 12px; color: var(--apple-text); font-size: 13px; font-weight: 600; letter-spacing: 0.02em; cursor: pointer; transition: all 0.2s ease; text-align: center; border-radius: 10px; margin-bottom: 2px; }
.custom-options li:hover { background: #0071e3; color: white; }
#searchInput { flex: 1; height: 100%; padding: 12px 20px; border: none; background: transparent; color: var(--apple-text); font-size: 15px; letter-spacing: 0.02em; outline: none; transition: padding 0.4s var(--apple-spring); width: 100%; }
#searchInput::placeholder { color: var(--apple-text); opacity: 0.5; transition: opacity 0.3s; }
.smart-search-wrapper:hover #searchInput, .smart-search-wrapper.is-active #searchInput, .smart-search-wrapper:has(.custom-select-wrapper.open) #searchInput { padding-left: 12px; }

/* 流光边缘特效 */
.smart-search-wrapper::after, .loggin::after, .menu-toggle::after, .theme-toggle::after, .weather-toggle::after { content: ''; position: absolute; inset: -1px; border-radius: inherit; padding: 1.5px; background: linear-gradient(70deg, transparent 20%, rgba(255, 255, 255, 0.9) 50%, rgba(100, 200, 255, 0.7) 60%, transparent 80%); background-size: 300% 100%; -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; opacity: 0; transition: opacity 0.4s ease; z-index: 10; }
.smart-search-wrapper:hover::after, .smart-search-wrapper.is-active::after, .smart-search-wrapper:has(.custom-select-wrapper.open):after, .loggin:hover::after, .menu-toggle:hover::after, .theme-toggle:hover::after, .weather-toggle:hover::after { opacity: 1; animation: flowLightEdge 2.5s linear infinite; }
@keyframes flowLightEdge { 0% { background-position: 200% center; } 100% { background-position: -100% center; } }

/* 右侧按钮组布局 */
.nav-right { display: flex; align-items: center; gap: 12px; }

/* =========================================
   3. 天气组件 
   ========================================= */
.weather-widget { position: relative; display: flex; align-items: center; }
.weather-panel { position: absolute; top: 55px; left: 50%; transform: translateX(-50%) translateY(-10px) scale(0.9); width: 230px; padding: 18px 15px; border-radius: 28px; opacity: 0; visibility: hidden; pointer-events: none; transition: all 0.4s var(--apple-spring); background: rgba(30, 32, 35, 0.82); backdrop-filter: blur(40px) saturate(180%); border: 1px solid rgba(255, 255, 255, 0.12); box-shadow: 0 20px 50px rgba(0,0,0,0.3), inset 0 0 0 1px rgba(255,255,255,0.05); color: #fff; text-align: center; }
.weather-widget.open .weather-panel { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0) scale(1); }
body.dark-mode .weather-panel { background: rgba(255, 255, 255, 0.88); color: #1d1d1f; border-color: rgba(0, 0, 0, 0.08); box-shadow: 0 20px 40px rgba(0,0,0,0.12); }
.weather-search { display: flex; gap: 8px; margin-bottom: 15px; }
.weather-search input { flex: 1; background: rgba(0,0,0,0.2); border: none; border-radius: 10px; padding: 8px 12px; color: inherit; font-size: 12px; outline: none; }
body.dark-mode .weather-search input { background: rgba(0,0,0,0.05); }
.weather-search input::placeholder { color: inherit; opacity: 0.5; }
.weather-search button { background: none; border: none; cursor: pointer; font-size: 13px; opacity: 0.7; transition: 0.2s;}
.weather-search button:hover { opacity: 1; transform: scale(1.1); }
.apple-weather-current { text-align: center; margin-bottom: 20px; }
.aw-city { font-size: 20px; font-weight: 500; margin-bottom: 0; letter-spacing: 0.5px; }
.aw-temp { font-size: 68px; font-weight: 200; line-height: 1; margin: 4px 0; font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif; letter-spacing: -2px; }
.aw-cond { font-size: 15px; font-weight: 500; opacity: 0.9; margin-bottom: 2px;}
.aw-hilo { font-size: 13px; font-weight: 500; opacity: 0.7; }
.apple-weather-forecast { background: rgba(0,0,0,0.2); border-radius: 16px; padding: 12px 14px; display: flex; flex-direction: column; gap: 12px; }
body.dark-mode .apple-weather-forecast { background: rgba(0,0,0,0.04); }
.aw-day-row { display: flex; justify-content: space-between; align-items: center; font-size: 14px; font-weight: 500; border-bottom: 1px solid rgba(255,255,255,0.06); padding-bottom: 10px; }
body.dark-mode .aw-day-row { border-bottom-color: rgba(0,0,0,0.05); }
.aw-day-row:last-child { border-bottom: none; padding-bottom: 0; }
.aw-day-name { width: 38px; text-align: left; opacity: 0.9; }
.aw-day-icon { flex: 1; text-align: center; font-size: 16px; }
.aw-day-temps { width: 68px; display: flex; justify-content: space-between; }
.aw-temp-min { opacity: 0.5; }
.aw-temp-max { font-weight: 600; opacity: 0.9; }

/* =========================================
   4. 侧边菜单系统 
   ========================================= */
.side-menu { position: fixed; left: -260px; top: 70px; width: 260px; height: calc(100vh - 70px); background: var(--apple-glass-dark); backdrop-filter: blur(var(--apple-blur)) saturate(180%); border-right: 1px solid var(--apple-glass-border); transition: left 0.4s var(--apple-spring), background 0.4s ease; padding: 24px 12px; color: var(--apple-text); z-index: 3000; display: flex; flex-direction: column; }
.side-menu.active { left: 0; transform: none; }
.menu-content { flex: 1; overflow-y: auto; padding-right: 5px; }
.menu-content::-webkit-scrollbar { display: none; }
.menu-category { text-align: left; padding: 16px 20px; cursor: pointer; transition: all 0.3s ease; border-radius: 14px; margin: 6px 0; font-weight: 500; font-size: 15px; }
.menu-category:hover, .menu-category.active { background: var(--btn-bg); transform: scale(1.02); }
.submenu-container { position: fixed; top: 70px!important; left: -100px; width: 250px; height: calc(100vh - 70px); background: var(--apple-glass-dark); backdrop-filter: blur(var(--apple-blur)) saturate(180%); border: 1px solid var(--apple-glass-border); border-radius: var(--apple-radius); transition: all 0.4s var(--apple-spring), background 0.4s ease; opacity: 0; visibility: hidden; box-shadow: 0 20px 50px rgba(0,0,0,0.3), var(--apple-glass-edge); z-index: 3001; overflow: hidden; }
.submenu-container.active { left: 275px; opacity: 1; visibility: visible; }
.submenu-content { position: relative; width: 100%; height: 100%; padding: 15px 12px; overflow-y: auto; padding-bottom: 40px; }
.menu-btn { border-radius: 10px; padding: 12px 16px; color: var(--apple-text); text-decoration: none; display: block; transition: all 0.2s var(--apple-spring); margin: 4px 0; font-size: 14px; }
.menu-btn:hover { background: var(--btn-bg); transform: translateX(6px); }

/* =========================================
   5. 页面中心、登录弹窗
   ========================================= */
.center-wrapper { position: absolute; top: 68%; left: 50%; transform: translate(-50%, -50%); display: flex; flex-direction: column; align-items: center; gap: 15px; width: 100%; z-index: 10; }
.Hello_World { color: #ffffff; font-size: clamp(28px, 4.5vw, 60px); font-weight: 700; letter-spacing: -0.03em; text-shadow: 0 8px 24px rgba(0,0,0,0.15), 0 1px 3px rgba(0,0,0,0.1); text-align: center; margin: 0; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; }
#time { font-size: 28px; color: rgba(255,255,255,0.95); font-weight: 600; letter-spacing: 0.05em; font-variant-numeric: tabular-nums; margin: 0; text-shadow: 0 4px 12px rgba(0,0,0,0.15); }
#assistantbutton { background: var(--apple-glass-bg); backdrop-filter: blur(var(--apple-blur)) saturate(200%); border: 1px solid var(--apple-glass-border); box-shadow: var(--apple-glass-edge), var(--apple-glass-shadow); border-radius: 30px; padding: 14px 28px; color: var(--apple-text); font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.4s var(--apple-spring); }
#assistantbutton:hover { background: var(--btn-bg-hover); box-shadow: var(--apple-glass-edge), 0 15px 35px -5px rgba(0,0,0,0.15); transform: translateY(-3px) scale(1.02); }

.glass-modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.4); backdrop-filter: blur(15px); display: flex; justify-content: center; align-items: center; z-index: 9999; }
.modal-content.glass { background: var(--apple-glass-bg); backdrop-filter: blur(var(--apple-blur)) saturate(200%); border: 1px solid var(--apple-glass-border); border-radius: 28px; padding: 40px; width: 350px; box-shadow: var(--apple-glass-edge), var(--apple-glass-shadow); text-align: center; position: relative; animation: modalScaleIn 0.5s var(--apple-spring) forwards; }
@keyframes modalScaleIn { from { opacity: 0; transform: scale(0.9) translateY(20px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-content h2 { color: var(--apple-text); margin-bottom: 30px; font-weight: 700; letter-spacing: -0.01em; }
.glass-input { width: 100%; padding: 14px 20px; margin-bottom: 15px; background: var(--btn-bg); border: 1px solid var(--apple-glass-border); border-radius: 14px; color: var(--apple-text); font-size: 15px; outline: none; transition: all 0.3s ease; box-shadow: inset 0 2px 4px rgba(0,0,0,0.02), var(--apple-glass-edge); }
.glass-input:focus { background: var(--btn-bg-hover); box-shadow: inset 0 1px 2px rgba(0,0,0,0.02), 0 0 0 4px rgba(0, 113, 227, 0.2); border-color: #0071e3; }
.glass-btn { width: 100%; padding: 15px; background: #0071e3; border: none; border-radius: 14px; color: #fff; font-weight: 600; font-size: 16px; cursor: pointer; transition: all 0.3s var(--apple-spring); margin-top: 10px; }
.glass-btn:hover { background: #0077ed; transform: scale(1.02) translateY(-2px); }
.close-btn { position: absolute; top: 18px; right: 22px; color: var(--apple-text); font-size: 26px; cursor: pointer; opacity: 0.4; transition: 0.2s; }
.close-btn:hover { opacity: 1; transform: scale(1.1); }
.toggle-text { margin-top: 20px; font-size: 13px; }
.toggle-text a { color: #0071e3; text-decoration: none; font-weight: 600; }

/* =========================================
   6. AI 聊天悬浮与面板 (🔥 新增聊天框展开时按钮隐藏逻辑)
   ========================================= */
.chat-fab { position: fixed; right: 30px; bottom: 40px; width: 56px; height: 56px; border-radius: 50%; background: var(--apple-glass-bg); backdrop-filter: blur(var(--apple-blur)) saturate(180%); border: 1px solid var(--apple-glass-border); box-shadow: var(--apple-glass-edge), 0 8px 24px rgba(0,0,0,0.15); color: var(--apple-text); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.4s var(--apple-spring); z-index: 1999; }
.chat-fab:hover { background: var(--btn-bg-hover); transform: scale(1.1) translateY(-4px); box-shadow: var(--apple-glass-edge), 0 12px 32px rgba(0,0,0,0.2); }

/* 🔥 新增隐藏状态类名 */
.chat-fab.hidden { opacity: 0; transform: scale(0.5) translateY(20px); pointer-events: none; }

.chat-panel { position: fixed; top: 70px; right: -420px; width: 380px; max-width: 100vw; height: calc(100vh - 70px); background: var(--apple-glass-dark); backdrop-filter: blur(var(--apple-blur)) saturate(180%); border-left: 1px solid var(--apple-glass-border); box-shadow: -10px 0 40px rgba(0,0,0,0.1); transition: right 0.5s var(--apple-spring); z-index: 1998; display: flex; flex-direction: column; }
.chat-panel.active { right: 0; }
.chat-header { display: flex; justify-content: space-between; align-items: center; padding: 15px; border-bottom: 1px solid var(--apple-glass-border); background: rgba(255,255,255,0.05); }
.api-switcher { display: flex; background: var(--btn-bg); border-radius: 20px; padding: 4px; border: 1px solid var(--apple-glass-border); box-shadow: inset 0 2px 4px rgba(0,0,0,0.05); gap: 2px; }
.api-btn { padding: 6px 10px; border: none; background: transparent; border-radius: 16px; color: var(--apple-text); font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; opacity: 0.7; }
.api-btn.active { background: var(--apple-text); color: var(--apple-glass-bg); opacity: 1; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.chat-close { background: none; border: none; font-size: 24px; color: var(--apple-text); cursor: pointer; opacity: 0.5; transition: 0.3s; margin-left: 5px; }
.chat-close:hover { opacity: 1; transform: scale(1.1); }
.chat-messages { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 15px; scroll-behavior: smooth; }
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--apple-glass-border); border-radius: 10px; }
.message { display: flex; flex-direction: column; max-width: 85%; animation: fadeInMsg 0.3s ease forwards; }
@keyframes fadeInMsg { from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:translateY(0); } }
.message.ai { align-self: flex-start; }
.message.ai .msg-content { background: var(--btn-bg); backdrop-filter: blur(10px); border: 1px solid var(--apple-glass-border); color: var(--apple-text); padding: 12px 16px; border-radius: 4px 18px 18px 18px; font-size: 14px; line-height: 1.5; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.message.user { align-self: flex-end; }
.message.user .msg-content { background: #0071e3; color: white; padding: 12px 16px; border-radius: 18px 4px 18px 18px; font-size: 14px; line-height: 1.5; box-shadow: 0 4px 12px rgba(0, 113, 227, 0.2); }
.chat-input-area { padding: 15px 20px; border-top: 1px solid var(--apple-glass-border); display: flex; gap: 10px; background: rgba(255,255,255,0.05); }
.chat-input { flex: 1; background: var(--btn-bg); border: 1px solid var(--apple-glass-border); border-radius: 20px; padding: 10px 15px; color: var(--apple-text); font-size: 14px; outline: none; transition: 0.3s; }
.chat-input:focus { background: var(--btn-bg-hover); border-color: #0071e3; }
.chat-send-btn { width: 40px; height: 40px; border-radius: 50%; background: #0071e3; border: none; color: white; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.3s var(--apple-spring); flex-shrink: 0; }
.chat-send-btn:hover { background: #0077ed; transform: scale(1.1); box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3); }

/* 手机端适配 */
@media (max-width: 768px) {
    .nav-container { padding: 0 15px; }
    .main-nav { display: none; }
    .nav-center { position: static; transform: none; width: auto; flex: 1; margin: 0 10px; min-width: 0; }
    .smart-search-wrapper { width: 140px; }
    .smart-search-wrapper:hover, .smart-search-wrapper.is-active, .smart-search-wrapper:has(.custom-select-wrapper.open) { width: 100%; }
    .weather-panel { left: 0; transform: translateX(-10px) translateY(-10px) scale(0.95); width: 260px; }
    .weather-widget.open .weather-panel { transform: translateX(0) translateY(0) scale(1); }
    .chat-panel { width: 100%; right: -100%; border-left: none; }
}
@media (max-width: 480px) {
    .custom-select-trigger { font-size: 12px; }
    .smart-search-wrapper:hover .custom-select-trigger, .smart-search-wrapper.is-active .custom-select-trigger, .smart-search-wrapper:has(.custom-select-wrapper.open) .custom-select-trigger { max-width: 80px; padding: 6px 8px; }
    .loggin { padding: 6px 12px; min-width: 50px; font-size: 12px; }
    .menu-toggle { padding: 6px 12px; font-size: 16px; }
    .theme-toggle, .weather-toggle { width: 32px; height: 32px; padding: 6px; }
    .chat-fab { bottom: 20px; right: 20px; }
}