/* ===== CSS 变量定义 ===== */
:root {
    /* 主色调 - 科技蓝 */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    
    /* 辅助色 */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    
    /* 中性色 */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #475569;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 字体 */
    --font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ===== 基础样式重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* ===== 应用容器 ===== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== 头部 ===== */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    font-size: 2rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 50%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.status {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.status::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.status.connected {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status.disconnected {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.version {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== 主内容区 ===== */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: 320px 1fr 380px;
    gap: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

/* ===== 面板通用样式 ===== */
section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

section h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ===== 配置面板 ===== */
.config-panel {
    height: fit-content;
}

.config-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.config-section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
}

.config-section h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

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

.form-group input[readonly] {
    background: var(--bg-primary);
    cursor: default;
}

.input-with-status {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-status input {
    padding-right: 80px;
}

.input-with-button {
    display: flex;
    gap: var(--spacing-sm);
}

.input-with-button input {
    flex: 1;
}

.field-status {
    position: absolute;
    right: var(--spacing-sm);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.field-status.success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.field-status.error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.field-status.loading {
    background: rgba(6, 182, 212, 0.2);
    color: var(--info-color);
}

.field-hint {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.form-actions.main-actions {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
}

/* ===== 按钮样式 ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-glow);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: white;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

/* ===== 数字人显示区 ===== */
.digital-human-container {
    display: flex;
    flex-direction: column;
}

.digital-human-box {
    flex: 1;
    min-height: 400px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
}

.digital-human-box.active {
    border-style: solid;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.digital-human-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.placeholder {
    text-align: center;
    color: var(--text-muted);
}

.placeholder-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ===== 控制面板 ===== */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.control-group h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.button-row {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.button-row .btn {
    flex: 1;
    min-width: 100px;
}

.text-input-row {
    display: flex;
    gap: var(--spacing-sm);
}

.text-input-row input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.text-input-row input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.text-input-row input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== 日志面板 ===== */
.log-panel {
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 200px);
}

.log-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.log-toolbar select {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.log-container {
    flex: 1;
    overflow-y: auto;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8125rem;
    line-height: 1.5;
}

.log-entry {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--bg-tertiary);
    display: flex;
    gap: var(--spacing-sm);
}

.log-entry:last-child {
    border-bottom: none;
}

.log-time {
    color: var(--text-muted);
    white-space: nowrap;
}

.log-level {
    font-weight: 600;
    min-width: 50px;
}

.log-level.debug {
    color: var(--text-muted);
}

.log-level.info {
    color: var(--info-color);
}

.log-level.warn {
    color: var(--warning-color);
}

.log-level.error {
    color: var(--danger-color);
}

.log-message {
    color: var(--text-primary);
    word-break: break-all;
}

/* ===== 底部 ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
        max-width: 800px;
    }
    
    .digital-human-box {
        min-height: 300px;
    }
    
    .log-panel {
        max-height: 400px;
    }
}

@media (max-width: 640px) {
    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .button-row {
        flex-direction: column;
    }
    
    .text-input-row {
        flex-direction: column;
    }
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== 动画效果 ===== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

.log-entry {
    animation: slideIn 0.2s ease-out;
}