@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* --- 亮色模式：粉彩/透亮风格 (Pastel & Light) --- */

    /* 核心色：变得非常浅，像水彩画 */
    --color-primary: #a5bbf1;       /* 极淡的矢车菊蓝 */
    --color-primary-hover: #bac8ff; /* 悬停时更亮 */
    --color-primary-soft: rgba(165, 187, 241, 0.12); /* 几乎透明 */

    /* 功能色：全部调整为粉彩色系 */
    --color-success: #69dbb1; /* 淡薄荷 */
    --color-warning: #ffe066; /* 淡奶油黄 */
    --color-danger: #ffc9c9;  /* 淡樱花粉 */
    --color-info: #99e9f2;    /* 淡冰蓝 */

    /* 背景：保持极高的亮度 */
    --bg-body: #f8f9fa;
    --bg-surface: #ffffff;
    --bg-surface-secondary: #f3f4f6;
    --bg-input: #fdfdfd;      /* 几乎纯白 */
    --bg-hover: #f1f3f5;

    /* 边框：极淡 */
    --border-color: #eff2f5;
    --border-color-light: #f8f9fa;

    /* 文字：保持深灰以确保阅读，但按钮文字需要变深 */
    --text-main: #495057;     /* 稍微浅一点的深灰 */
    --text-secondary: #868e96;
    --text-muted: #ced4da;

    /* 关键变化：因为主色很浅，按钮上的文字必须是深色 */
    --text-on-primary: #343a40;

    /* 阴影：极度扩散，几乎看不见 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.03);

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    --canvas-bg: #e9ecef;
    --crosshair-color: rgba(165, 187, 241, 0.8);
    --navbar-height: 60px;
    --badge-neutral-bg: #f1f3f5;
    --badge-neutral-text: #868e96;
}

body.dark-mode {
    /* --- 深色模式：幽暗/沉稳风格 (Muted & Dim) --- */

    /* 核心色：变得暗沉，不发光，融入背景 */
    --color-primary: #3b526b;       /* 深蓝灰 */
    --color-primary-hover: #46607a;
    --color-primary-soft: rgba(59, 82, 107, 0.2);

    /* 功能色：大地色系/低明度 */
    --color-success: #2f6f4e; /* 苔藓绿 */
    --color-warning: #8a6a26; /* 暗金色 */
    --color-danger: #8c3b3b;  /* 暗砖红 */
    --color-info: #2a5d78;    /* 深湖蓝 */

    /* 背景：深邃 */
    --bg-body: #18191c;       /* 接近黑的深炭色 */
    --bg-surface: #202226;    /* 稍微提亮 */
    --bg-surface-secondary: #272a30;
    --bg-input: #1c1e21;
    --bg-hover: #2c2f36;

    /* 边框：非常暗 */
    --border-color: #2c2f36;
    --border-color-light: #25282e;

    /* 文字：降低亮度，避免刺眼 */
    --text-main: #c1c2c5;     /* 灰白而非亮白 */
    --text-secondary: #909296;
    --text-muted: #5c5f66;

    /* 深色模式下的按钮文字保持浅色 */
    --text-on-primary: #dce4f5;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);

    --canvas-bg: #141517;

    --badge-neutral-bg: rgba(255, 255, 255, 0.03);
    --badge-neutral-text: #909296;
}

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    letter-spacing: 0.015em;
    font-weight: 400;
    transition: background-color 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), color 0.4s ease;
    overflow-x: hidden;
}

a {
    color: var(--text-main); /* 链接平时不突出颜色，像普通文字 */
    text-decoration: underline;
    text-decoration-color: var(--color-primary); /* 下划线用淡色 */
    text-underline-offset: 3px;
    transition: all 0.2s;
}

a:hover {
    color: var(--text-main);
    text-decoration-color: var(--color-primary-hover);
    background-color: var(--color-primary-soft);
    border-radius: 2px;
}

/* 滚动条极简 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

@keyframes slideInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in-up {
    animation: slideInUp 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

.navbar {
    background-color: var(--bg-surface) !important;
    border-bottom: 1px solid transparent;
    box-shadow: var(--shadow-sm);
    height: var(--navbar-height);
    padding: 0.5rem 1.5rem;
}

.navbar-brand {
    color: var(--text-main) !important;
    font-weight: 600;
    font-size: 1.1rem;
}

.navbar-text {
    color: var(--text-secondary) !important;
}

.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.card-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border-top-left-radius: var(--radius-md) !important;
    border-top-right-radius: var(--radius-md) !important;
}

.card-body {
    padding: 1.5rem;
    color: var(--text-main);
}

.card-footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
}

/* 按钮样式：特别注意文字颜色 */
.btn {
    border-radius: var(--radius-md);
    font-weight: 500;
    padding: 0.5rem 1.25rem;
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: 1px solid transparent;
    box-shadow: none !important;
}

.btn:focus {
    box-shadow: 0 0 0 3px var(--color-primary-soft) !important;
}

.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--text-on-primary); /* 使用动态文字颜色 */
}

.btn-primary:hover, .btn-primary:active {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--text-on-primary);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-surface-secondary);
    border-color: transparent;
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.btn-info {
    color: var(--text-on-primary); /* 亮色模式下可能需要深色文字 */
    background: var(--color-info);
    border: none;
}
/* 修正 Info 按钮在亮色模式下的文字颜色 */
:root .btn-info { color: #224a5e; }
body.dark-mode .btn-info { color: #d0ebff; }

.btn-link {
    color: var(--text-secondary);
    text-decoration: none;
}

.btn-link:hover {
    color: var(--text-main);
    background-color: var(--bg-hover);
    text-decoration: none;
}

.form-control, .custom-select, .custom-file-label {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    box-shadow: none;
}

.form-control:focus, .custom-select:focus {
    background-color: var(--bg-surface);
    color: var(--text-main);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.custom-file-label::after {
    background-color: var(--bg-surface-secondary);
    color: var(--text-main);
    border-left: none;
}

.table {
    color: var(--text-main);
    margin-bottom: 0;
}

.table th, .table td {
    padding: 1rem 1.5rem;
    vertical-align: middle;
    border-top: 1px solid var(--border-color);
}

.table thead th {
    vertical-align: bottom;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-surface-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-top: none;
}

.table-hover tbody tr:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.modal-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    color: var(--text-main);
}

.modal-header, .modal-footer {
    border-color: var(--border-color);
    background-color: var(--bg-surface);
}

.modal-title { color: var(--text-main); }

.close {
    color: var(--text-secondary);
    text-shadow: none;
    opacity: 0.5;
}

.close:hover {
    color: var(--text-main);
    opacity: 1;
}

.nav-tabs {
    border-bottom: 1px solid var(--border-color);
}

.nav-tabs .nav-link {
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    background: transparent;
    border-bottom: 2px solid transparent;
}

.nav-tabs .nav-link:hover {
    color: var(--text-main);
}

.nav-tabs .nav-link.active {
    background-color: transparent;
    border-color: transparent;
    border-bottom-color: var(--color-primary);
    color: var(--text-main); /* Tab激活文字不用主色，用深色更稳重 */
}

.list-group-item {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-main);
}

.list-group-item-action:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

/* IDE 布局 */
.ide-layout {
    display: flex;
    flex-direction: row;
    height: calc(100vh - var(--navbar-height));
    width: 100vw;
    overflow: hidden;
    background-color: var(--bg-body);
}

.ide-canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    position: relative;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
}

.ide-toolbar {
    height: 50px;
    display: flex;
    align-items: center;
    padding: 0 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-surface);
    flex-shrink: 0;
}

.ide-canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: auto;
    background-color: var(--canvas-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

#canvas-container {
    position: relative;
    box-shadow: var(--shadow-lg);
    display: inline-block;
    background-color: var(--canvas-bg);
    border-radius: 4px;
}

#canvas-container canvas {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    border-radius: 4px;
}

#drawing-canvas {
    pointer-events: auto !important;
    z-index: 10;
}

#crosshair-canvas {
    z-index: 5;
}

.ide-sidebar {
    width: 320px;
    flex-shrink: 0;
    background-color: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 1rem;
    gap: 1rem;
}

#frame-slider {
    width: 100%;
    cursor: pointer;
    accent-color: var(--text-secondary); /* 滑块颜色也不要太鲜艳 */
}

.content-wrapper {
    padding: 2rem;
    margin-top: 1rem;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

.chart-card-body {
    padding: 1rem;
    background-color: var(--bg-surface);
}

#gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    padding: 1rem;
    background-color: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 80vh;
    overflow-y: auto;
}

.gallery-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform 0.2s;
    display: flex;
    flex-direction: column;
}

.gallery-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-color);
}

.gallery-item .caption {
    padding: 0.5rem;
    font-size: 0.8rem;
    text-align: center;
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

#aug-preview-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
}

#aug-preview-gallery img {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.aug-preview-source-img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.aug-preview-source-img:hover { opacity: 0.8; }

.aug-preview-source-img.active {
    border-color: var(--text-secondary); /* 选中状态用灰色框 */
    opacity: 1;
}

.color-swatch {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    border: 1px solid var(--border-color);
}

#bbox-list .list-group-item {
    border: none;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    background-color: transparent;
    padding: 0.5rem 1rem;
}

#bbox-list .list-group-item:hover {
    background-color: var(--bg-surface-secondary);
}

#bbox-list .list-group-item.selected {
    background-color: var(--color-primary-soft);
    color: var(--text-main); /* 选中时不改变文字颜色，保持柔和 */
}

#class-list .list-group-item {
    border-radius: var(--radius-sm);
    margin-bottom: 2px;
    border: 1px solid transparent;
}

#class-list .list-group-item.active {
    background-color: var(--color-primary-soft);
    color: var(--text-main);
    border-color: var(--color-primary-soft);
    font-weight: 600;
}

.shortcut-key {
    display: inline-block;
    padding: 2px 6px;
    margin: 0 2px;
    background-color: var(--bg-surface-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

#interpolation-banner {
    background-color: rgba(52, 211, 153, 0.05); /* 极淡 */
    border: 1px solid transparent;
    color: var(--color-success);
    padding: 0.5rem;
    text-align: center;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    display: none;
    font-weight: 500;
}

#track-controls, #interactive-segment-controls, #suggestion-review-controls {
    border: 1px dashed var(--border-color);
    background-color: var(--bg-surface-secondary);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
}

#suggestion-review-controls {
    border-color: transparent;
    background-color: rgba(251, 191, 36, 0.05);
}

#toast-notification {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background-color: var(--bg-surface);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    font-size: 0.9rem;
    font-weight: 500;
}

#toast-notification.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.theme-toggle-btn {
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.2rem;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.2s;
    cursor: pointer;
}

.theme-toggle-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

/* Badge 样式优化：透明度大幅提升 */
.badge {
    padding: 0.35em 0.65em;
    font-weight: 500;
    border-radius: 6px;
    border: none !important;
}

/* 亮色模式 Badge：使用极淡背景 + 深色文字 */
.badge-success { background-color: rgba(105, 219, 177, 0.15); color: #2b6e56; }
.badge-warning { background-color: rgba(255, 224, 102, 0.15); color: #947600; }
.badge-danger { background-color: rgba(255, 201, 201, 0.25); color: #a33e3e; }
.badge-info { background-color: rgba(153, 233, 242, 0.2); color: #106e7a; }

.badge-secondary {
    background-color: var(--bg-surface-secondary);
    color: var(--text-secondary);
}

.badge-neutral {
    background-color: var(--badge-neutral-bg);
    color: var(--badge-neutral-text);
}

.bg-warning-soft {
    background-color: rgba(255, 224, 102, 0.1);
    color: #947600;
}

/* Dark Mode 覆盖：修正颜色以适应暗背景 */
body.dark-mode .bg-light {
    background-color: var(--bg-surface-secondary) !important;
    color: var(--text-main) !important;
}

body.dark-mode .bg-white {
    background-color: var(--bg-surface) !important;
    color: var(--text-main) !important;
}

body.dark-mode .border,
body.dark-mode .border-top,
body.dark-mode .border-bottom,
body.dark-mode .border-left,
body.dark-mode .border-right {
    border-color: var(--border-color) !important;
}

body.dark-mode .text-dark {
    color: var(--text-main) !important;
}

body.dark-mode .text-muted {
    color: var(--text-muted) !important;
}

body.dark-mode .text-primary {
    color: #668bb0 !important; /* 暗淡的蓝字 */
}

body.dark-mode .bg-warning-soft {
    background-color: rgba(138, 106, 38, 0.15);
    color: #e0c888;
}

body.dark-mode .input-group-text {
    background-color: var(--bg-surface-secondary);
    border-color: var(--border-color);
    color: var(--text-main);
}

/* 深色模式 Badge：使用极低透明度背景 + 浅色文字 */
body.dark-mode .badge-success { color: #8ce99a; background-color: rgba(47, 111, 78, 0.2); }
body.dark-mode .badge-warning { color: #ffe066; background-color: rgba(138, 106, 38, 0.2); }
body.dark-mode .badge-danger { color: #ffa8a8; background-color: rgba(140, 59, 59, 0.2); }
body.dark-mode .badge-info { color: #99e9f2; background-color: rgba(42, 93, 120, 0.2); }

body.dark-mode .btn-secondary {
    background-color: var(--bg-surface-secondary);
    color: var(--text-main);
}

body.dark-mode .btn-secondary:hover {
    background-color: var(--bg-hover);
}

body.dark-mode .form-control,
body.dark-mode .custom-select {
    background-color: var(--bg-input);
    border-color: transparent;
    color: var(--text-main);
}

body.dark-mode .form-control:focus,
body.dark-mode .custom-select:focus {
    background-color: var(--bg-surface);
    border-color: var(--color-primary);
}

.nav-pills-fluent .nav-link {
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.2s ease;
    background: transparent;
}

.nav-pills-fluent .nav-link:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.nav-pills-fluent .nav-link.active {
    background-color: var(--bg-surface-secondary);
    color: var(--text-main); /* 激活也不要变色，只变背景 */
    font-weight: 600;
}

body.dark-mode .nav-pills-fluent .nav-link.active {
    background-color: rgba(255, 255, 255, 0.05);
}

.fluent-card {
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.settings-section {
    padding: 1.5rem;
}

.settings-section-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
}

.table-fluent {
    margin-bottom: 0;
}

.table-fluent thead th {
    background-color: var(--bg-surface-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    border-top: none;
    white-space: nowrap;
}

.table-fluent td {
    padding: 1rem 1.5rem;
    vertical-align: middle;
    border-top: 1px solid var(--border-color-light);
    color: var(--text-main);
}

.table-fluent tr:last-child td {
    border-bottom: none;
}

.page-header {
    margin-bottom: 2rem;
    padding: 0 0.5rem;
}

.page-title {
    font-weight: 600;
    font-size: 1.75rem;
    letter-spacing: -0.01em;
    color: var(--text-main);
}

.page-subtitle {
    color: var(--text-secondary);
    margin-top: 0.25rem;
}