/* ========================================
   SerialMonitor - Sublime 风格主题
   ======================================== */

/* CSS 变量 - 深色主题 */
:root {
    /* 背景色 */
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --bg-card: #333333;
    --bg-hover: #3a3a3a;
    
    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #808080;
    
    /* 强调色 */
    --accent-orange: #ff9800;
    --accent-blue: #4fc3f7;
    --accent-green: #a6e22e;
    --accent-pink: #f92672;
    --accent-purple: #ae81ff;
    --accent-yellow: #e6db74;
    
    /* 边框和阴影 */
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* 浅色主题 */
:root.light {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8e8e8;
    --bg-card: #ffffff;
    --bg-hover: #eeeeee;
    
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    
    --border-color: #dddddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-normal);
}

:root.light .navbar {
    background: rgba(255, 255, 255, 0.95);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 18px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-orange);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.nav-btn:hover {
    background: var(--bg-hover) !important;
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    padding: 120px 24px 60px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto 48px;
}

.hero-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* 下载按钮 */
.download-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--accent-orange);
    color: #000;
}

.btn-primary:hover {
    background: #ffb333;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 152, 0, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent-orange);
}

/* 版本信息 */
.version-info {
    margin-bottom: 24px;
    font-size: 14px;
}

.version {
    color: var(--text-primary);
    font-weight: 500;
}

.build {
    color: var(--text-muted);
    font-style: italic;
    margin: 0 8px;
}

.whats-new {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
}

.whats-new:hover {
    text-decoration: underline;
}

/* 主题/系统切换 */
.theme-os-switch {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.theme-switch,
.os-switch {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 4px;
    gap: 4px;
}

.switch-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.switch-btn:hover {
    color: var(--text-secondary);
}

.switch-btn.active {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* ========================================
   产品展示区
   ======================================== */
.hero-showcase {
    max-width: 900px;
    margin: 0 auto;
}

.showcase-container {
    perspective: 1000px;
}

.showcase-window {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.window-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.window-controls {
    display: flex;
    gap: 8px;
    margin-right: 16px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.close { background: #ff5f57; }
.control.minimize { background: #ffbd2e; }
.control.maximize { background: #28c940; }

.window-title {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.window-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.toolbar-left {
    display: flex;
    gap: 10px;
    align-items: center;
}

.port-badge,
.baud-badge {
    padding: 4px 10px;
    background: var(--bg-hover);
    border-radius: 4px;
    font-size: 12px;
    font-family: 'Source Code Pro', monospace;
    color: var(--text-secondary);
}

.status-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-badge.connected {
    background: rgba(166, 226, 46, 0.2);
    color: var(--accent-green);
}

.toolbar-right {
    display: flex;
    gap: 4px;
}

.format-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 12px;
    font-family: 'Source Code Pro', monospace;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.format-btn:hover {
    border-color: var(--accent-orange);
    color: var(--text-secondary);
}

.format-btn.active {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
    color: #000;
}

.window-content {
    height: 280px;
    overflow: hidden;
    background: #1a1a1a;
}

.data-view {
    padding: 16px;
    font-family: 'Source Code Pro', monospace;
    font-size: 13px;
    line-height: 1.8;
    height: 100%;
    overflow-y: auto;
}

.data-line {
    display: flex;
    gap: 16px;
    animation: fadeIn 0.3s ease;
}

.data-line .time {
    color: var(--text-muted);
    min-width: 90px;
}

.data-line .direction {
    min-width: 30px;
    font-weight: 600;
}

.data-line .direction.rx {
    color: var(--accent-blue);
}

.data-line .direction.tx {
    color: var(--accent-green);
}

.data-line .content {
    color: var(--text-primary);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.window-statusbar {
    display: flex;
    gap: 24px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'Source Code Pro', monospace;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-green);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 轮播控制 */
.showcase-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin-top: 24px;
}

.carousel-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-hover);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot:hover {
    background: var(--text-muted);
}

.dot.active {
    background: var(--accent-orange);
    transform: scale(1.2);
}

.carousel-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    border-color: var(--accent-orange);
}

.carousel-btn svg {
    width: 16px;
    height: 16px;
    color: var(--text-primary);
}

.carousel-btn .hidden {
    display: none;
}

/* 功能描述 */
.showcase-description {
    text-align: center;
    margin-top: 32px;
    padding: 0 24px;
}

.desc-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.desc-text {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   功能特性区
   ======================================== */
.features {
    padding: 100px 24px;
    background: var(--bg-primary);
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

.features-grid {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.feature-card {
    display: flex;
    align-items: center;
    gap: 48px;
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--accent-orange);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--shadow-color);
}

.feature-card.reverse {
    flex-direction: row-reverse;
}

.feature-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 64px;
    height: 64px;
    color: var(--accent-orange);
}

.feature-content {
    flex: 1;
}

.feature-content h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   演示区
   ======================================== */
.demo {
    padding: 100px 24px;
    background: var(--bg-secondary);
}

.demo-converter {
    display: flex;
    align-items: stretch;
    gap: 24px;
    margin-bottom: 32px;
}

.converter-panel {
    flex: 1;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-hover);
    border-bottom: 1px solid var(--border-color);
}

.panel-header label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.format-select {
    padding: 6px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
}

.format-select:focus {
    outline: none;
    border-color: var(--accent-orange);
}

.data-textarea {
    width: 100%;
    height: 200px;
    padding: 16px;
    background: #1a1a1a;
    border: none;
    color: var(--accent-green);
    font-family: 'Source Code Pro', monospace;
    font-size: 14px;
    resize: none;
}

.data-textarea:focus {
    outline: none;
}

.data-textarea::placeholder {
    color: var(--text-muted);
}

.converter-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    flex-shrink: 0;
}

.converter-arrow svg {
    width: 24px;
    height: 24px;
    color: var(--accent-orange);
}

.demo-presets {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.preset-label {
    font-size: 14px;
    color: var(--text-muted);
}

.preset-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preset-btn:hover {
    border-color: var(--accent-orange);
    color: var(--text-primary);
}

/* ========================================
   下载区
   ======================================== */
.download {
    padding: 100px 24px;
    background: var(--bg-primary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.download-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition-normal);
}

.download-card:hover {
    border-color: var(--accent-orange);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--shadow-color);
}

.os-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--accent-orange);
}

.os-icon svg {
    width: 100%;
    height: 100%;
}

.download-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.os-info {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.btn-download {
    display: inline-block;
    padding: 12px 32px;
    background: var(--accent-orange);
    color: #000;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: all var(--transition-fast);
    margin-bottom: 16px;
}

.btn-download:hover {
    background: #ffb333;
    transform: translateY(-2px);
}

.file-info {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
}

.pricing-info {
    text-align: center;
    font-size: 15px;
}

.pricing-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.pricing-link:hover {
    color: var(--text-primary);
}

.pricing-link.highlight {
    color: var(--accent-orange);
    font-weight: 600;
}

.divider {
    color: var(--text-muted);
    margin: 0 16px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    padding: 48px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 18px;
}

.footer-logo .logo-icon {
    width: 28px;
    height: 28px;
    color: var(--accent-orange);
}

.footer-links {
    display: flex;
    gap: 32px;
    justify-content: center;
    margin-bottom: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.copyright {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 100px 16px 40px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .theme-os-switch {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-card,
    .feature-card.reverse {
        flex-direction: column;
        text-align: center;
    }
    
    .demo-converter {
        flex-direction: column;
    }
    
    .converter-arrow {
        transform: rotate(90deg);
        width: 100%;
        height: 48px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .window-toolbar {
        flex-direction: column;
        gap: 10px;
    }
    
    .toolbar-right {
        width: 100%;
        justify-content: center;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
}