/* =================================================================
   DESIGN TOKENS - CLEAN FOCUS (FINAL)
   ================================================================= */
:root {
    --bg-root: #FFFFFF;
    --bg-surface-hover: #F5F5F7;
    
    --border-light: #C0C0C0;
    --border-hover: #666666;
    --border-active: #000000;

    --text-primary: #000000;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --accent-color: #000000;
    --accent-fg: #FFFFFF;

    --container-radius: 12px;
    --vf-size: 72px; --vf-spacing: 0em; --vf-height: 1.1;
}

body.dark-mode {
    --bg-root: #181818;
    --bg-surface-hover: #1C1C1E;
    --border-light: #484848;
    --border-hover: #999999;
    --border-active: #FFFFFF;
    --text-primary: #FFFFFF;
    --text-secondary: #999999;
    --text-tertiary: #555555;
    --accent-color: #FFFFFF;
    --accent-fg: #000000;
}

* { box-sizing: border-box; margin: 0; padding: 0; outline: none; -webkit-font-smoothing: antialiased; }

body {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-root); color: var(--text-primary);
    height: 100vh; overflow: hidden; display: flex; flex-direction: column;
    transition: background 0.4s, color 0.4s;
}

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* 容器通用样式 */
.rounded-container-box, .global-text-input, .library-list, .font-card {
    border: 1.3px solid var(--border-light);
    border-radius: var(--container-radius);
    background: transparent;
    transition: border-color 0.2s ease;
}
.rounded-container-box:hover, .library-list:hover, .font-card:hover { border-color: var(--border-hover); }
.global-text-input:focus { border-color: var(--border-active); }
.rounded-container-box { padding: 16px; display: flex; flex-direction: column; gap: 8px; }

/* 按钮 */
.icon-btn {
    background: transparent; border: none; cursor: pointer; color: var(--text-secondary);
    padding: 8px; border-radius: 6px; transition: all 0.2s; display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { color: var(--text-primary); background: var(--bg-surface-hover); }
.icon-btn.small { padding: 4px; width: 24px; height: 24px; border: 1px solid transparent; }
.icon-btn svg { width: 20px; height: 20px; stroke-width: 1.5px; }
.icon-btn.small svg { width: 100%; height: 100%; }

/* 导航栏 */
.top-nav {
    height: 60px; display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px; z-index: 100; flex-shrink: 0; border-bottom: 1px solid var(--border-light); background: var(--bg-root);
}
.nav-left, .nav-actions { display: flex; align-items: center; gap: 20px; }
.nav-actions { gap: 8px; }
.app-logo-img { height: 22px; width: auto; display: block; transition: filter 0.3s; }
body.dark-mode .app-logo-img { 
    filter: invert(1) grayscale(1) brightness(10); 
}
.nav-links { display: flex; gap: 32px; position: absolute; left: 50%; transform: translateX(-50%); }
.nav-link { text-decoration: none; color: var(--text-secondary); font-size: 13px; font-weight: 500; transition: color 0.2s; }
.nav-link:hover { color: var(--text-primary); }

.notify-pill {
    display: flex; align-items: center; justify-content: flex-end; height: 32px; border-radius: 16px; 
    color: var(--text-primary); text-decoration: none; overflow: hidden; max-width: 180px; 
    transition: 0.3s ease; padding: 0 2px; border: 1px solid transparent; cursor: pointer;
}
.notify-pill:hover { border-color: var(--border-light); background: var(--bg-surface-hover); }
.notify-pill.collapsed { max-width: 32px; } .notify-pill.collapsed:hover { max-width: 180px; }
.notify-content { font-size: 12px; font-weight: 500; white-space: nowrap; padding: 0 10px 0 8px; opacity: 1; transition: 0.2s; }
.notify-pill.collapsed .notify-content { opacity: 0; pointer-events: none; } .notify-pill.collapsed:hover .notify-content { opacity: 1; }
.notify-icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.notify-icon svg { width: 18px; height: 18px; }

/* 布局 */
.app-container { display: flex; flex: 1; overflow: hidden; position: relative; }
.sidebar {
    width: 280px; display: flex; flex-direction: column; flex-shrink: 0;
    border-right: 1px solid var(--border-light); background: var(--bg-root);
    z-index: 50; padding: 24px; transition: transform 0.3s ease;
}
.sidebar-header, .group-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; height: 20px; }
.panel-title { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-tertiary); }
.sidebar-close-btn { display: none; cursor: pointer; color: var(--text-primary); }
.control-group { margin-bottom: 24px; }
.control-group.flex-grow { display: flex; flex-direction: column; margin-bottom: 0; flex: 1; min-height: 0; }
.global-text-input { width: 100%; min-height: 80px; padding: 12px; color: var(--text-primary); font: inherit; font-size: 14px; resize: none; line-height: 1.5; }

/* 列表容器 */
.library-list { 
    overflow-y: auto; 
    flex: 1; 
    padding: 0; 
    min-height: 100px; 
}

/* 列表项交互 */
.library-item {
    padding: 12px 16px;
    border-radius: 0;
    font-size: 13px; 
    font-weight: 500;
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    cursor: pointer; 
    transition: background 0.15s, color 0.15s; 
    margin-bottom: 0;
    color: var(--text-secondary); 
    border: none; 
    background: transparent; 
    border-bottom: 1px solid var(--border-light);
}

.library-item:last-child {
    border-bottom: none;
}

.library-item.active {
    color: var(--text-primary);
    font-weight: 600;
    background-color: transparent; 
}

.library-item:hover {
    background-color: var(--bg-surface-hover) !important; 
    color: var(--text-primary);
}

.library-item-info {
    flex: 1;
    min-width: 0;
    margin-right: 12px;
}

.lib-name { 
    white-space: nowrap; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    display: block;
    max-width: 100%;
}

.toggle-switch { 
    width: 36px; 
    height: 20px; 
    background: var(--border-light); 
    border-radius: 20px; 
    position: relative; 
    transition: 0.2s; 
    flex-shrink: 0;
}

.toggle-switch.on { background: var(--accent-color); }
.toggle-handle { width: 16px; height: 16px; background: var(--bg-root); border-radius: 50%; position: absolute; top: 2px; left: 2px; transition: 0.2s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.toggle-switch.on .toggle-handle { transform: translateX(16px); }

.control-row.compact { margin-bottom: 12px; }
.control-label { display: flex; justify-content: space-between; font-size: 11px; margin-bottom: 6px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; }

/* 修改：数字不再加粗，字号调小至10px */
.val-display { color: var(--text-primary); font-weight: 400; font-size: 10px; }

.slider-container { display: flex; align-items: center; gap: 10px; }

input[type=range].macos-slider { -webkit-appearance: none; width: 100%; background: transparent; height: 20px; cursor: pointer; }
input[type=range].macos-slider::-webkit-slider-runnable-track { width: 100%; height: 1px; background: var(--text-tertiary); }
input[type=range].macos-slider::-webkit-slider-thumb { -webkit-appearance: none; height: 12px; width: 12px; background: var(--bg-root); border: 1px solid var(--border-active); border-radius: 50%; margin-top: -5.5px; transition: transform 0.2s; }
input[type=range].macos-slider:hover::-webkit-slider-thumb { transform: scale(1.2); }

.canvas-area { flex: 1; padding: 30px 40px; overflow-y: auto; background: var(--bg-root); }
.font-card { margin-bottom: 24px; animation: fadeIn 0.4s ease; overflow: hidden; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.font-card-header { display: flex; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border-light); gap: 20px; flex-wrap: wrap; }
.font-identity { display: flex; align-items: center; gap: 12px; min-width: 140px; }
.font-name { font-size: 15px; font-weight: 600; }
.font-badge { font-size: 10px; border: 1px solid var(--text-tertiary); color: var(--text-secondary); padding: 2px 6px; border-radius: 100px; text-transform: uppercase; font-weight: 600; }

.card-controls-inline { display: flex; flex: 1; gap: 10px; align-items: center; flex-wrap: wrap; }
.no-axes-msg { font-size: 12px; color: var(--text-tertiary); font-style: italic; }

/* 轴控制器容器 - 增大内边距 */
.inline-axis-control { 
    display: flex; 
    align-items: center; 
    gap: 8px; 
    border: 1px solid var(--border-light); 
    padding: 6px 14px; 
    border-radius: var(--container-radius); 
    transition: 0.2s; 
}
.inline-axis-control:hover { border-color: var(--border-hover); }
.axis-tag { font-size: 10px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; width: 32px; }
.axis-val { font-size: 10px; width: 24px; text-align: right; }

/* 播放按钮 */
.play-btn { 
    width: 20px; 
    height: 20px; 
    border-radius: 4px; 
    border: none; 
    background: transparent; 
    color: var(--text-secondary); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    cursor: pointer; 
    padding: 0; 
    transition: all 0.2s ease;
    flex-shrink: 0; 
}

.play-btn svg { width: 12px; height: 12px; }
.play-btn:hover { color: var(--text-primary); background-color: var(--bg-surface-hover); }
.play-btn.active { background: transparent; color: var(--text-primary); box-shadow: none; }

input[type=range].macos-slider.mini { width: 70px; height: 14px; }
input[type=range].macos-slider.mini::-webkit-slider-thumb { height: 10px; width: 10px; margin-top: -4.5px; border-width: 1px; }

/* 卡片操作区 */
.card-actions { 
    display: flex; 
    gap: 6px; 
    margin-left: auto; 
    align-items: center; 
}

.card-action-btn { 
    width: 28px; 
    height: 28px;
    background: transparent; 
    border: 1px solid transparent; 
    cursor: pointer; 
    padding: 0; 
    border-radius: 6px; 
    color: var(--text-secondary); 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    transition: all 0.2s cubic-bezier(0.25, 0.1, 0.25, 1); 
}

.card-action-btn:hover { 
    background-color: var(--bg-surface-hover); 
    border-color: var(--border-light); 
    color: var(--text-primary); 
}

.card-action-btn.close:hover { 
    background-color: rgba(255, 59, 48, 0.1); 
    border-color: rgba(255, 59, 48, 0.3);      
    color: #FF3B30;                            
}

.demo-text-wrapper { overflow-x: auto; padding: 32px 40px; }
.demo-text-wrapper::-webkit-scrollbar { display: none; }
.demo-text { font-size: var(--vf-size); letter-spacing: var(--vf-spacing); line-height: var(--vf-height); white-space: pre; outline: none; transition: font-size 0.15s, letter-spacing 0.15s, line-height 0.15s; will-change: font-variation-settings; }

.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; color: var(--text-tertiary); text-align: center; }
.empty-icon { margin-bottom: 20px; opacity: 0.3; color: var(--text-secondary); }

.modal-overlay { position: fixed; inset: 0; background: rgba(255,255,255,0.9); backdrop-filter: blur(2px); display: flex; align-items: center; justify-content: center; z-index: 300; opacity: 0; pointer-events: none; transition: 0.3s; }
body.dark-mode .modal-overlay { background: rgba(0,0,0,0.9); }
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal-card { width: 440px; padding: 48px; border-radius: 16px; transform: scale(0.98); transition: 0.3s ease; background: var(--bg-root); border: 1px solid var(--border-hover); }
.modal-overlay.active .modal-card { transform: scale(1); }
.modal-close { position: absolute; top: 24px; right: 24px; cursor: pointer; color: var(--text-secondary); padding: 8px; border-radius: 50%; border: 1px solid transparent; transition: 0.2s; }
.modal-close:hover { border-color: var(--border-hover); color: var(--text-primary); }
.modal-content { text-align: center; } .modal-content h2 { font-size: 20px; font-weight: 600; margin-bottom: 6px; }
.feature-grid { display: grid; gap: 28px; text-align: left; margin: 40px 0; } .feature-item { display: flex; gap: 16px; }
.f-icon { width: 40px; height: 40px; border: 1px solid var(--border-light); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-primary); flex-shrink: 0; }
.f-text h4 { font-size: 13px; margin-bottom: 4px; font-weight: 600; } .f-text p { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
.modal-footer { font-size: 11px; color: var(--text-tertiary); border-top: 1px solid var(--border-light); padding-top: 24px; }

.mobile-sidebar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 150; opacity: 0; pointer-events: none; transition: 0.3s; }
.mobile-sidebar-overlay.active { opacity: 1; pointer-events: auto; }
#mobileSettingsBtn { display: none; }

@media (max-width: 900px) {
    #mobileSettingsBtn { display: flex; } .nav-links { display: none; }
    .app-container { flex-direction: column; padding: 0; height: calc(100vh - 60px); }
    .sidebar { position: fixed; top: 0; left: 0; height: 100vh; width: 85%; max-width: 320px; transform: translateX(-100%); box-shadow: 10px 0 40px rgba(0,0,0,0.1); z-index: 200; }
    .sidebar.active { transform: translateX(0); } .sidebar-close-btn { display: block; }
    .canvas-area { padding: 20px; }
    
    .font-card-header { 
        flex-direction: column; 
        align-items: flex-start; 
        gap: 12px; 
        position: relative; 
    }

    .font-identity {
        max-width: calc(100% - 80px);
    }
    
    .card-controls-inline { 
        width: 100%; 
        margin-left: 0; 
    } 

    .card-actions { 
        position: absolute;
        top: 12px;
        right: 20px;
        width: auto;
        margin-left: 0; 
        justify-content: flex-end; 
    }
}