/* style.css */
:root {
    --primary-color: #1a73e8; /* 谷歌蓝 */
    --secondary-color: #34a853; /* 谷歌绿 */
    --background-color: #f8f9fa;
    --text-color: #3c4043;
    --card-bg: #ffffff;
    --border-color: #dadce0;
    --button-hover-bg: #e8f0fe;
    --button-hover-text: #174ea6;
    --stop-color: #d93025; /* 谷歌红，用于删除和停止 */
    --stop-hover-bg: #fce8e6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    margin: 0;
    padding: 2rem;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.6;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

h2 {
    color: #5f6368;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 0;
}

h3 {
    color: var(--primary-color);
    margin-top: 0;
}

#main-container {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
    justify-content: center;
}

#video-wrapper, #controls-panel {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    padding: 1.5rem;
}

#video-wrapper {
    flex: 1;
    min-width: 320px;
    max-width: 680px;
}

#controls-panel {
    flex: 1;
    min-width: 300px;
    max-width: 450px;
}

#video-container {
    position: relative;
    width: 100%;
    margin: auto;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    aspect-ratio: 640 / 480; 
}

#video, #canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#video {
    transform: scaleX(-1);
    object-fit: cover;
}

#canvas {
    transform: scaleX(-1);
    background-color: transparent;
}

#status {
    background-color: #e8f0fe;
    color: var(--primary-color);
    padding: 0.75rem;
    text-align: center;
    border-radius: 4px;
    font-weight: 500;
    margin-bottom: 1rem;
}

.control-section {
    margin-bottom: 2rem;
}

/* ==================== 动态类别UI样式更新 ==================== */

#pose-classes-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem; /* 类别之间的间距 */
    margin-bottom: 1rem;
}

.pose-class {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    gap: 0.5rem;
}

.class-info {
    flex-grow: 1; /* 让信息区域占据更多空间 */
    display: flex;
    flex-direction: column;
}

/* 📌 新增: 类别名称输入框样式 */
.class-name-input {
    border: none;
    outline: none;
    font-size: 1.1rem;
    font-weight: bold;
    font-family: inherit;
    color: var(--text-color);
    background-color: transparent;
    padding: 2px 4px;
    margin: -2px -4px; /* 抵消padding，使其对齐 */
    border-radius: 2px;
    transition: background-color 0.2s;
}

.class-name-input:focus {
    background-color: #e0e0e0;
}

.sample-count {
    font-size: 0.9rem;
    color: #5f6368;
}

.class-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem; /* 按钮间距 */
}

/* 📌 新增: 删除按钮样式 */
.btn-delete-class {
    background: transparent;
    border: none;
    color: var(--stop-color);
    font-size: 1.5rem; /* 让 '×' 更大更清晰 */
    line-height: 1;
    padding: 0 0.5rem;
    cursor: pointer;
    border-radius: 50%;
    transition: background-color 0.2s;
    font-weight: bold;
}

.btn-delete-class:hover {
    background-color: var(--stop-hover-bg);
}

/* ========================================================= */

.btn-sample, .btn-predict, .btn-add-class {
    padding: 0.5rem 1rem;
    border: 1px solid var(--primary-color);
    background-color: var(--card-bg);
    color: var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease-in-out;
}

.btn-sample:hover, .btn-predict:hover, .btn-add-class:hover {
    background-color: var(--button-hover-bg);
    color: var(--button-hover-text);
}

.btn-sample:disabled, .btn-predict:disabled, .btn-add-class:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--card-bg);
    color: var(--primary-color);
}

/* 📌 新增: 为“增加分类”按钮添加特定样式 */
.add-class-wrapper {
    margin-top: 1rem;
}

.btn-add-class {
    width: 100%;
    border-style: dashed;
}


.btn-predict.stop {
    background-color: var(--stop-color);
    border-color: var(--stop-color);
    color: white;
}

.btn-predict.stop:hover {
    background-color: #a50e0e;
}

#result-container {
    margin-top: 1rem;
    padding: 1rem;
    background-color: #e8f0fe;
    border-radius: 4px;
    text-align: center;
}

#result-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.model-controls {
    display: flex;
    gap: 1rem;
}