/* 🚀 修复: 移除 div, span 的全局动画，仅针对必要组件开启过渡，解决性能抖动 */
body, button, input, select, .chunk-item, .login-card, .roles-drawer, .sidebar, .dashboard, .log-panel, .mac-dock, .modal-content, .bg-panel, .bg-subpanel { 
    transition: background-color 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s; 
}

/* ========================================================= */
/* 🎨 全局主题变量 (CSS Variables) 定义 */
/* ========================================================= */

/* 🌙 默认深色模式 (Dark Theme) */
:root {
    --bg-body: #1E1E24;
    --bg-overlay: #181A1F;
    --bg-card: #252830;
    --bg-item-hover: #2F333D;
    --bg-input: #1E1E24;
    --bg-soft: rgba(0, 0, 0, 0.2);
    --bg-btn-nav: #333842;
    
    --border-main: #333842;
    --border-light: #454B59;
    --border-soft: rgba(255, 255, 255, 0.05);
    
    --text-primary: #E0E6ED;
    --text-secondary: #1E1E24; /* 用于亮色背景上的暗色文字，如绿底白字的反转 */
    --text-muted: #8C8C8C;
    --text-dark-muted: #5C6370;
    --text-btn: #F8F9FA;
    
    --color-primary: #528BFF;
    --color-primary-soft: rgba(82, 139, 255, 0.15);
    --color-success: #00D26A;
    --color-success-soft: rgba(0, 210, 106, 0.1);
    --color-warning: #F5A623;
    --color-danger: #E03131;
    --color-purple: #E040FB;
    
    --shadow-heavy: rgba(0, 0, 0, 0.5);
    --shadow-light: rgba(0, 0, 0, 0.2);
    --shadow-primary: rgba(82, 139, 255, 0.3);
    
    --dock-bg: rgba(37, 40, 48, 0.6);
    --dock-tooltip-bg: rgba(0, 0, 0, 0.85);
    --dock-tooltip-text: #F8F9FA;
    --dock-divider: rgba(255, 255, 255, 0.15);
    
    --scrollbar-track: #1E1E24;
    --scrollbar-thumb: #454B59;
    --scrollbar-thumb-hover: #528BFF;
}

/* ☀️ 浅色日间模式 (Light Theme) 变量覆写 */
body.light-mode {
    --bg-body: #F4F6F8;
    --bg-overlay: #F4F6F8;
    --bg-card: #FAFAFA;
    --bg-item-hover: #F3F4F6;
    --bg-input: #F3F4F6;
    --bg-soft: rgba(0, 0, 0, 0.03);
    --bg-btn-nav: #F3F4F6;
    
    --border-main: #E5E7EB;
    --border-light: #D1D5DB;
    --border-soft: rgba(0, 0, 0, 0.05);
    
    --text-primary: #1F2937;
    --text-secondary: #F8F9FA;
    --text-muted: #6B7280;
    --text-dark-muted: #9CA3AF;
    --text-btn: #FFFFFF;
    
    --color-primary: #3B82F6;
    --color-primary-soft: rgba(59, 130, 246, 0.1);
    
    --shadow-heavy: rgba(0, 0, 0, 0.05);
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-primary: rgba(59, 130, 246, 0.3);
    
    --dock-bg: rgba(250, 250, 250, 0.7);
    --dock-tooltip-bg: rgba(250, 250, 250, 0.95);
    --dock-tooltip-text: #1F2937;
    --dock-divider: rgba(0, 0, 0, 0.1);
    
    --scrollbar-track: #F4F6F8;
    --scrollbar-thumb: #D1D5DB;
    --scrollbar-thumb-hover: #9CA3AF;
}

/* ========================================================= */
/* 核心布局与组件样式 */
/* ========================================================= */

body { margin: 0; padding: 0; background-color: var(--bg-body); font-family: sans-serif; display: flex; height: 100vh; overflow: hidden; color: var(--text-primary); }

/* 登录页样式 */
.login-wrapper { width: 100%; height: 100%; display: flex; justify-content: center; align-items: center; background: var(--bg-overlay); position: absolute; z-index: 2000; }
.login-card { background: var(--bg-card); padding: 40px; border-radius: 16px; box-shadow: 0 20px 50px var(--shadow-heavy); width: 100%; max-width: 400px; text-align: center; border: 1px solid var(--border-main); }
.login-input { width: 100%; padding: 15px; margin-bottom: 20px; background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border-main); border-radius: 8px; font-size: 16px; box-sizing: border-box; outline: none; }
.login-input:focus { border-color: var(--color-primary); }

/* 角色抽屉样式 */
.roles-drawer-container { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--bg-overlay); z-index: 1500; display: flex; justify-content: center; align-items: flex-end; }
.roles-drawer { background: var(--bg-card); width: 100%; max-width: 800px; padding: 40px 40px 60px 40px; border-radius: 24px 24px 0 0; text-align: center; border-top: 1px solid var(--border-main); border-left: 1px solid var(--border-main); border-right: 1px solid var(--border-main); animation: slideUpBottom 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 -10px 40px var(--shadow-heavy);}
@keyframes slideUpBottom { from { transform: translateY(100%); } to { transform: translateY(0); } }
.roles-grid { display: flex; gap: 30px; justify-content: center; flex-wrap: wrap; }
.role-card { background: var(--bg-body); border: 2px solid var(--border-main); border-radius: 16px; padding: 30px; cursor: pointer; width: 140px; display: flex; flex-direction: column; align-items: center; transition: all 0.2s; }
.role-card:hover { transform: translateY(-10px); border-color: var(--color-primary); box-shadow: 0 10px 20px var(--shadow-primary); }
.role-avatar { font-size: 60px; margin-bottom: 15px; }
.role-name { font-weight: bold; font-size: 18px; color: var(--text-primary); }

/* 侧边栏锁定角色框 */
.locked-role-box { display: flex; align-items: center; background: var(--color-primary-soft); border: 1px solid var(--color-primary); padding: 12px 15px; border-radius: 8px; margin-bottom: 10px; }
.locked-avatar { font-size: 24px; margin-right: 10px; }
.locked-name { font-weight: bold; font-size: 16px; color: var(--text-primary); }

.sidebar { width: 350px; background-color: var(--bg-card); border-right: 1px solid var(--border-main); display: flex; flex-direction: column; z-index: 10;}
.sidebar-header { padding: 20px; font-size: 18px; font-weight: bold; border-bottom: 1px solid var(--border-main); }
.chunk-list { flex: 1; overflow-y: auto; padding: 10px; scroll-behavior: smooth; }

.date-separator { color: #FF922B; font-size: 12px; font-weight: bold; padding: 10px 5px 5px 5px; border-bottom: 1px dashed var(--border-light); margin-bottom: 8px; margin-top: 5px; }
.date-separator:first-child { margin-top: 0; }

.chunk-item { padding: 12px; margin-bottom: 8px; background-color: var(--bg-item-hover); border-radius: 8px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 14px; color: var(--text-primary);}
.chunk-item:hover { filter: brightness(1.1); }
.chunk-item.active { background-color: var(--color-primary); color: var(--text-btn); font-weight: bold; box-shadow: 0 4px 10px var(--shadow-primary);}

.role-selector { width: 100%; padding: 10px; margin-bottom: 15px; background: var(--bg-input); color: var(--color-primary); border: 1px solid var(--border-light); border-radius: 6px; font-weight: bold; cursor: pointer; outline: none; box-sizing: border-box; }
.role-selector:focus { border-color: var(--color-success); }

.main-panel { flex: 1; display: flex; flex-direction: column; padding: 30px 30px 100px 30px; align-items: center; justify-content: center; overflow-y: auto; position: relative;}

.dashboard { background: var(--bg-card); padding: 30px; border-radius: 12px; width: 100%; max-width: 900px; border: 1px solid var(--border-main); margin-bottom: 20px; box-shadow: 0 10px 30px var(--shadow-light); display: flex; flex-direction: column; align-items: center; height: 380px; box-sizing: border-box; position: relative; }

.score-card-container { perspective: 1000px; width: 100%; height: 80px; display: flex; justify-content: center; align-items: center; cursor: pointer; margin-bottom: 5px; flex-shrink: 0;}
.score-card { width: 100%; height: 100%; position: relative; transform-style: preserve-3d; display: flex; justify-content: center; align-items: center; transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1); }
.score-card.flipped { transform: rotateY(180deg); }
.score-face { position: absolute; width: 100%; height: 100%; backface-visibility: hidden; display: flex; justify-content: center; align-items: center; }
.score-huge { font-size: 60px; color: var(--color-success); font-weight: bold; margin: 0; line-height: 1; text-shadow: 0 4px 15px var(--color-success-soft);}
.score-empty { color: var(--text-dark-muted); }

.score-back { transform: rotateY(180deg); display: flex; gap: 20px; justify-content: center; align-items: center; }
.sub-score-item { display: flex; flex-direction: column; align-items: center; background: var(--bg-soft); padding: 8px 25px; border-radius: 10px; border: 1px solid var(--border-soft); min-width: 80px;}
.sub-score-label { font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.sub-score-val { font-size: 28px; font-weight: bold; }
.val-acc { color: var(--color-primary); text-shadow: 0 0 10px var(--color-primary-soft); } 
.val-flu { color: var(--color-warning); text-shadow: 0 0 10px rgba(245, 166, 35, 0.4); } 
.val-comp { color: var(--color-success); text-shadow: 0 0 10px var(--color-success-soft); } 
.val-pro { color: var(--color-purple); text-shadow: 0 0 10px rgba(224, 64, 251, 0.4); } 
.sub-score-val.zero { color: var(--text-dark-muted) !important; text-shadow: none !important; }

.ref-text-container { height: 200px; width: 100%; display: flex; justify-content: center; align-items: center; overflow: hidden; margin-bottom: 10px; flex-shrink: 0; }
.ref-text { font-size: 28px; line-height: 1.6; font-weight: bold; color: var(--text-primary); text-align: center; width: 100%; display: flex; flex-wrap: wrap; justify-content: center; align-content: center;}
.ref-text span { display: inline-block; margin-right: 8px; }

.progress-bar-container { width: 100%; height: 6px; background: var(--bg-soft); border-radius: 3px; overflow: hidden; position: absolute; bottom: 20px; left: 30px; width: calc(100% - 60px); box-shadow: inset 0 1px 3px var(--shadow-heavy);}
.progress-bar-fill { height: 100%; background: var(--color-primary); width: 0%; box-shadow: 0 0 10px var(--shadow-primary); }

.controls { width: 100%; max-width: 900px; display: flex; flex-direction: column; gap: 15px; margin-bottom: 20px;}
.btn-row { display: flex; gap: 10px; width: 100%; }

button { flex: 1; padding: 15px; border: none; border-radius: 8px; font-size: 16px; font-weight: bold; cursor: pointer; color: var(--text-btn); display: flex; justify-content: center; align-items: center; gap: 6px;}
button:disabled { opacity: 0.5; cursor: not-allowed; }
button:hover:not(:disabled) { filter: brightness(1.1); }

.btn-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 15px 0; }
.grid-text { grid-column: 2; white-space: nowrap; }
.badge-wrapper { grid-column: 3; display: flex; justify-content: flex-end; padding-right: 15px; }
.duration-badge { font-size: 13px; font-weight: normal; opacity: 0.85; background: rgba(0,0,0,0.2); padding: 2px 6px; border-radius: 4px; font-family: monospace; color: var(--text-btn);}

.btn-orig { background-color: var(--color-success); }
.btn-rec { background-color: var(--color-warning); }
.btn-nav { background-color: var(--bg-btn-nav); color: var(--text-primary); border: 1px solid var(--border-main); }

.btn-export { background-color: #9C27B0; box-shadow: 0 4px 10px rgba(156, 39, 176, 0.2); }
.btn-export.active { box-shadow: 0 0 0 3px var(--text-primary), 0 4px 10px rgba(156, 39, 176, 0.2); transform: translateY(-2px); }

.btn-mic { background-color: var(--color-primary); padding: 20px 0; font-size: 20px; box-shadow: 0 4px 15px var(--shadow-primary);}
.btn-mic.recording { background-color: var(--color-danger); animation: pulse 1.5s infinite; box-shadow: 0 4px 15px rgba(224,49,49,0.4);}
.countdown-active { color: #FFE082; font-weight: bold; transform: scale(1.1); }

.log-panel { width: 100%; max-width: 900px; background: var(--bg-overlay); border: 1px solid var(--border-main); border-radius: 12px; display: flex; flex-direction: column; height: 180px; box-shadow: inset 0 2px 10px var(--shadow-heavy);}
.log-header { padding: 10px 15px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border-main); background: var(--bg-card); border-radius: 12px 12px 0 0;}
.log-content { flex: 1; overflow-y: auto; padding: 10px 15px; font-family: 'Courier New', Courier, monospace; font-size: 13px; line-height: 1.6;}
.log-entry { margin-bottom: 6px; word-wrap: break-word; user-select: text; }
.log-time { color: var(--text-dark-muted); margin-right: 8px; }

.mac-dock { position: fixed; bottom: 20px; left: calc(350px + (100vw - 350px) / 2); transform: translateX(-50%); background: var(--dock-bg); backdrop-filter: blur(15px); border: 1px solid var(--border-soft); padding: 12px 20px; border-radius: 24px; display: flex; gap: 20px; align-items: center; box-shadow: 0 10px 30px var(--shadow-heavy), inset 0 1px 0 var(--border-soft); z-index: 100; }
.dock-item { font-size: 28px; cursor: pointer; transform-origin: bottom; display: flex; flex-direction: column; align-items: center; position: relative; }
.dock-item:hover { transform: scale(1.4) translateY(-5px); margin: 0 10px; }
.dock-tooltip { position: absolute; top: -45px; background: var(--dock-tooltip-bg); color: var(--dock-tooltip-text); font-size: 13px; font-weight: bold; padding: 6px 10px; border-radius: 6px; opacity: 0; pointer-events: none; white-space: nowrap; box-shadow: 0 4px 6px var(--shadow-heavy); }
.dock-tooltip::after { content: ''; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%); border-width: 5px 5px 0; border-style: solid; border-color: var(--dock-tooltip-bg) transparent transparent transparent; }
.dock-item:hover .dock-tooltip { opacity: 1; }
.dock-divider { width: 1px; height: 35px; background: var(--dock-divider); border-radius: 1px; }

.transparent-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 99; }
.mode-menu { position: fixed; bottom: 100px; left: calc(350px + (100vw - 350px) / 2); transform: translateX(-50%); background: var(--dock-tooltip-bg); backdrop-filter: blur(15px); border: 1px solid var(--border-soft); border-radius: 12px; padding: 10px; display: flex; flex-direction: column; gap: 8px; box-shadow: 0 15px 40px var(--shadow-heavy); z-index: 101; animation: slideUp 0.2s cubic-bezier(0.25, 0.8, 0.25, 1); width: 280px;}
@keyframes slideUp { from { opacity: 0; transform: translate(-50%, 20px); } to { opacity: 1; transform: translate(-50%, 0); } }
.mode-option { padding: 12px 15px; color: var(--text-primary); cursor: pointer; border-radius: 8px; display: flex; align-items: center; justify-content: space-between; font-size: 15px;}
.mode-option:hover { background: var(--bg-soft); }
.mode-option.active { background: var(--color-primary-soft); border: 1px solid var(--color-primary); }

.stepper { display: flex; align-items: center; gap: 5px; background: var(--bg-soft); padding: 4px; border-radius: 6px; }
.stepper button { flex: 0 0 24px; height: 24px; padding: 0; min-width: 24px; background: var(--bg-card); border-radius: 4px; display: flex; justify-content: center; align-items: center; font-size: 16px; color: var(--text-primary); border: 1px solid var(--border-light); cursor: pointer;}
.stepper button:hover { background: var(--color-primary); color: var(--text-btn); border-color: var(--color-primary); }
.stepper button:active { transform: scale(0.9); }
.stepper span { width: 36px; text-align: center; font-size: 13px; font-family: monospace; font-weight: bold; color: var(--color-success);}

.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; z-index: 1000; backdrop-filter: blur(5px); }
.modal-content { background: var(--bg-card); padding: 25px; border-radius: 12px; width: 550px; max-height: 85vh; display: flex; flex-direction: column; border: 1px solid var(--border-main); box-shadow: 0 20px 50px var(--shadow-heavy);}
.tree-container { overflow-y: auto; flex: 1; background: var(--bg-body); padding: 15px; border-radius: 8px; border: 1px solid var(--border-main); margin: 15px 0; }
.tree-node { text-align: left; }
.tree-label { padding: 10px; cursor: pointer; display: flex; align-items: center; border-radius: 6px; font-size: 15px; color: var(--text-primary);}
.tree-label:hover { background: var(--bg-item-hover); }
.icon-toggle { width: 24px; display: inline-block; text-align: center; color: var(--text-muted); cursor: pointer; font-size: 12px;}
.icon-toggle:hover { color: var(--text-primary); }
.folder-name { display: flex; align-items: center; gap: 8px; flex: 1; }

/* 🚀 核心修复：移除死板的固定宽度，让组件内敛布局 (inline-flex) 自行负责居中 */
.badge-course { 
    background: var(--color-success); 
    color: var(--text-secondary); 
    font-size: 12px; 
    border-radius: 4px; 
    font-weight: bold; 
    margin-left: auto;
    display: inline-flex; 
    justify-content: center; 
    align-items: center; 
    flex-shrink: 0; 
}

.tree-children { padding-left: 24px; border-left: 1px dashed var(--border-main); margin-left: 11px;}
.btn-close { background: var(--bg-item-hover); padding: 12px; width: 100%; border-radius: 8px; color: var(--text-primary); border: 1px solid var(--border-light); cursor: pointer; font-weight: bold;}

/* 数据库视图表格样式 */
.db-table { width: 100%; border-collapse: collapse; font-size: 13px; text-align: left; }
.db-table th { background: var(--bg-card); padding: 10px; border: 1px solid var(--border-main); color: var(--text-primary); white-space: nowrap; font-weight: bold; position: sticky; top: 0; z-index: 10;}
.db-table td { padding: 8px 10px; border: 1px solid var(--border-main); color: var(--text-muted); max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: monospace;}
.db-table tr:hover td { background: var(--bg-item-hover); color: var(--text-primary); }

.date-scroll-container { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 10px; }
.date-scroll-container::-webkit-scrollbar { height: 6px; }
.date-scroll-container::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
.date-scroll-container::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

.date-block { padding: 8px 16px; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: 8px; color: var(--text-muted); cursor: pointer; white-space: nowrap; font-size: 13px; font-weight: bold; transition: all 0.2s; }
.date-block:hover { background: var(--bg-item-hover); }
.date-block.active { background: var(--color-primary); color: var(--text-btn); border-color: var(--color-primary); box-shadow: 0 4px 10px var(--shadow-primary); transform: translateY(-2px); }

.text-primary { color: var(--text-primary); }
.text-muted { color: var(--text-muted); }
.bg-panel { background: var(--bg-body); border: 1px solid var(--border-main); }
.bg-subpanel { background: var(--bg-soft); border: 1px solid var(--border-main); }

@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(224,49,49,0.7); } 70% { box-shadow: 0 0 0 15px rgba(224,49,49,0); } 100% { box-shadow: 0 0 0 0 rgba(224,49,49,0); } }

/* 全局滚动条样式 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

/* ========================================================= */
/* 📖 有道词典悬浮窗样式 */
/* ========================================================= */
.dict-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card);
    border: 1px solid var(--border-main);
    border-radius: 12px;
    padding: 20px;
    width: 320px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 20px 50px var(--shadow-heavy);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.dict-word { font-size: 22px; font-weight: bold; color: var(--color-primary); }
.dict-explain { font-size: 14px; color: var(--text-primary); line-height: 1.5; margin-bottom: 5px; }
.dict-close { margin-top: 15px; background: var(--bg-item-hover); color: var(--text-primary); border: 1px solid var(--border-main); padding: 8px; border-radius: 6px; cursor: pointer; font-weight: bold; }
.dict-close:hover { filter: brightness(1.2); }

/* ========================================================= */
/* ⌨️ 快捷键设置专属样式 */
/* ========================================================= */
.shortcut-btn {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-main);
    color: var(--color-primary);
    padding: 6px 12px;
    border-radius: 6px;
    font-family: monospace;
    font-size: 13px;
    font-weight: bold;
    min-width: 90px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    outline: none;
}

.shortcut-btn:hover {
    background: var(--color-primary-soft);
}

.shortcut-btn.recording {
    background: rgba(245, 166, 35, 0.2);
    border-color: var(--color-warning);
    color: var(--color-warning);
    animation: shortcutPulse 1.5s infinite;
}

@keyframes shortcutPulse { 
    0% { opacity: 0.6; } 
    50% { opacity: 0.2; } 
    100% { opacity: 0.6; } 
}