/* ============================================
   mLRS Module - Styles
   ============================================ */

/* CSS Variables */
:root {
    --primary: #0066ff;
    --primary-dark: #0052cc;
    --primary-light: #3385ff;
    --secondary: #1a1a2e;
    --accent: #ff4757;
    --accent-orange: #ff7f50;
    --success: #00d26a;
    --warning: #ffa502;
    
    --bg-dark: #0a0a0f;
    --bg-dark-2: #12121a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252542;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    
    --border-color: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
    
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
    
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s ease;
    
    --container: 1200px;
    --header-height: 72px;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

::selection {
    background: var(--primary);
    color: white;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark-2);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-card);
    border-radius: 4px;
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

.highlight {
    color: var(--primary);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-weight: 600;
    font-size: 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    white-space: nowrap;
}

.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
}

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

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

.btn-outline {
    width: 100%;
    padding: 14px 24px;
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: 600;
}

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

.btn-text {
    display: block;
    width: 100%;
    padding: 12px;
    color: var(--text-secondary);
    font-size: 13px;
    text-align: center;
}

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

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
}

.btn-download {
    background: linear-gradient(135deg, var(--accent-orange), #ff6347);
    color: white;
    padding: 14px 28px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255, 127, 80, 0.3);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 127, 80, 0.4);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 10, 15, 0.98);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
}

.logo-icon {
    font-size: 24px;
    color: var(--primary);
    animation: pulse 2s infinite;
}

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

.logo-accent {
    color: var(--primary);
}

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

.nav-link {
    position: relative;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.nav-link:hover::after {
    width: 100%;
}

.header-cta {
    padding: 10px 20px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(0, 102, 255, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(255, 71, 87, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 70%),
        linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 102, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 102, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* Particles Effect */
.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-particles::before,
.hero-particles::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.1) 0%, transparent 70%);
    animation: floatParticle 8s ease-in-out infinite;
}

.hero-particles::before {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.hero-particles::after {
    bottom: 30%;
    right: 15%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 71, 87, 0.1) 0%, transparent 70%);
    animation-delay: -4s;
}

@keyframes floatParticle {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(20px, -30px) scale(1.1); }
    50% { transform: translate(-10px, -50px) scale(0.9); }
    75% { transform: translate(-30px, -20px) scale(1.05); }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 80px;
    padding-bottom: 40px;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 102, 255, 0.15);
    border: 1px solid rgba(0, 102, 255, 0.4);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--success); }
    50% { opacity: 0.4; box-shadow: none; }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

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

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Hero Showcase */
.hero-showcase {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    animation: fadeInRight 0.8s ease 0.3s backwards;
}

.showcase-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 102, 255, 0.2) 0%, transparent 70%);
    filter: blur(40px);
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.showcase-main {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.product-frame {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    overflow: hidden;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.4),
        0 0 40px rgba(0, 102, 255, 0.1);
}

.frame-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary);
    opacity: 0.5;
}

.frame-corner.top-left {
    top: 8px;
    left: 8px;
    border-right: none;
    border-bottom: none;
    border-radius: 4px 0 0 0;
}

.frame-corner.top-right {
    top: 8px;
    right: 8px;
    border-left: none;
    border-bottom: none;
    border-radius: 0 4px 0 0;
}

.frame-corner.bottom-left {
    bottom: 8px;
    left: 8px;
    border-right: none;
    border-top: none;
    border-radius: 0 0 0 4px;
}

.frame-corner.bottom-right {
    bottom: 8px;
    right: 8px;
    border-left: none;
    border-top: none;
    border-radius: 0 0 4px 0;
}

.product-images {
    position: relative;
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--bg-dark);
    border-radius: 12px;
    overflow: hidden;
}

.product-image {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.5s ease;
}

.product-image.active {
    opacity: 1;
    transform: scale(1);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
}

.product-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 16px;
}

.nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-dot.active {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.2);
}

.nav-dot:hover:not(.active) {
    border-color: var(--primary);
}

.showcase-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.feature-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.feature-chip:hover {
    border-color: var(--primary);
    background: rgba(0, 102, 255, 0.1);
}

.chip-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.chip-icon svg {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 12px;
    animation: fadeInUp 1s ease 0.8s backwards;
}

.scroll-arrow {
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow svg {
    width: 20px;
    height: 20px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(8px); }
    60% { transform: translateY(4px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Remove old hero-visual styles */
.hero-visual {
    display: none;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid rgba(0, 102, 255, 0.2);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
}

/* Benefits */
.benefits {
    background: var(--bg-dark-2);
}

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

.benefit-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.benefit-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.benefit-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.benefit-title {
    font-size: 18px;
    margin-bottom: 12px;
}

.benefit-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Pinout Section */
.pinout-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.pinout-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.pinout-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.pinout-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), transparent);
    border-bottom: 1px solid var(--border-light);
}

.pinout-badge {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    padding: 6px 12px;
    background: rgba(0, 102, 255, 0.15);
    border-radius: 4px;
}

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

.pinout-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pin-group-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.pin-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.pin-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
}

.pin-name {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.pin-desc {
    font-size: 11px;
    color: var(--text-muted);
}

.pin-power .pin-name {
    color: var(--success);
}

.pin-usb .pin-name {
    color: var(--primary);
}

.pinout-visual {
    padding: 20px 24px 24px;
    border-top: 1px solid var(--border-light);
}

.pinout-image {
    padding: 20px;
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.pinout-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

.connector {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.connector-pin {
    padding: 8px 14px;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

.connector-pin.pin-active {
    border-color: var(--success);
    color: var(--success);
}

.connector-pin.pin-mav {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

/* Specs Table */
.specs-table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.specs-title {
    padding: 20px 24px;
    font-size: 18px;
    border-bottom: 1px solid var(--border-light);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table th,
.specs-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.specs-table th {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    background: var(--bg-dark);
}

.specs-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.specs-table td:nth-child(2) {
    font-family: var(--font-mono);
    color: var(--primary);
}

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

.specs-table tr:hover td {
    background: rgba(0, 102, 255, 0.05);
}

/* Bind Guide */
.guide {
    background: var(--bg-dark-2);
}

.bind-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    align-items: start;
    margin-bottom: 40px;
}

.bind-step {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: relative;
    transition: var(--transition);
}

.bind-step:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.step-number {
    font-family: var(--font-mono);
    font-size: 48px;
    font-weight: 800;
    color: rgba(0, 102, 255, 0.2);
    line-height: 1;
    margin-bottom: 16px;
}

.step-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.step-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.step-title {
    font-size: 16px;
    margin-bottom: 8px;
}

.step-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-visual {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mini-module {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.mini-led {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.mini-btn {
    font-size: 9px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

.power-indicator {
    font-size: 24px;
}

.led-animation {
    display: flex;
    gap: 12px;
}

.led-blink {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    animation: ledBlink 0.8s infinite;
}

.led-blink.blue {
    background: #0066ff;
    box-shadow: 0 0 12px #0066ff;
}

.led-blink.red {
    background: #ff4757;
    box-shadow: 0 0 12px #ff4757;
    animation-delay: 0.4s;
}

@keyframes ledBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.2; }
}

.dual-modules {
    display: flex;
    gap: 12px;
}

.dual-modules .mini-module .mini-led.blink {
    animation: ledBlink 0.8s infinite;
}

.bind-success .step-icon {
    background: rgba(0, 210, 106, 0.1);
}

.bind-success .step-icon svg {
    color: var(--success);
}

.bind-success .step-number {
    color: rgba(0, 210, 106, 0.2);
}

.success-led {
    display: flex;
    align-items: center;
    gap: 8px;
}

.led-solid {
    width: 16px;
    height: 16px;
    border-radius: 50%;
}

.led-solid.green {
    background: var(--success);
    box-shadow: 0 0 12px var(--success);
    animation: pulse 2s infinite;
}

.success-text {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--success);
}

.bind-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
    color: var(--text-muted);
}

.bind-connector svg {
    width: 24px;
    height: 24px;
}

.bind-note {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid rgba(0, 102, 255, 0.2);
    border-radius: var(--radius);
}

.bind-note svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

.bind-note p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Tabs */
.tabs-container {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn svg {
    width: 20px;
    height: 20px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(0, 102, 255, 0.05);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: rgba(0, 102, 255, 0.1);
}

.tab-content {
    display: none;
    padding: 32px;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Connection with Image */
.connection-with-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.connection-image {
    background: var(--bg-dark);
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
}

.connection-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.connection-image:hover img {
    transform: scale(1.02);
}

.connection-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    pointer-events: none;
}

.connection-detail {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.connection-diagram {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 40px;
    background: var(--bg-dark);
    border-radius: var(--radius);
}

.diagram-device {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.device-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.device-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.device-name {
    font-size: 13px;
    font-weight: 600;
    text-align: center;
}

.device-note {
    font-size: 11px;
    color: var(--text-muted);
}

.device-pins {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    max-width: 100px;
}

.pin-diagram {
    padding: 4px 8px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-secondary);
}

.pin-diagram.power {
    border-color: var(--success);
    color: var(--success);
}

.connection-wires {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.wire {
    width: 60px;
    height: 3px;
    border-radius: 2px;
}

.wire-gnd {
    background: #666;
}

.wire-power {
    background: var(--success);
}

.wire-signal {
    background: var(--primary);
}

.wires-tx {
    align-items: center;
}

.connection-steps h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.step-list li {
    position: relative;
    padding-left: 28px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.step-list li::before {
    content: counter(step);
    counter-increment: step;
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    font-size: 11px;
    font-weight: 600;
    color: white;
}

.step-list {
    counter-reset: step;
}

/* PC Diagram */
.pc-diagram {
    flex-direction: column;
    gap: 30px;
}

.usb-cable {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
}

.cable-line {
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 2px;
}

.cable-line:last-child {
    background: linear-gradient(90deg, transparent, var(--primary));
}

.usb-cable svg {
    width: 28px;
    height: 28px;
}

.usb-port {
    padding: 6px 12px;
    background: var(--primary);
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    color: white;
}

/* Transmitter Setup */
.transmitter-setup {
    background: var(--bg-dark-2);
}

.setup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.setup-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin: 32px 0;
}

.setup-step {
    display: flex;
    gap: 20px;
}

.setup-step-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.setup-step-content h4 {
    font-size: 16px;
    margin-bottom: 6px;
}

.setup-step-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.setup-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.transmitter-illustration {
    position: relative;
    width: 280px;
}

.transmitter-body {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tx-screen {
    height: 50px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen-text {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--success);
}

.tx-sticks {
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
}

.stick {
    width: 36px;
    height: 36px;
    background: var(--secondary);
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.tx-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.tx-btn {
    width: 20px;
    height: 20px;
    background: var(--secondary);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.module-slot {
    margin-top: -20px;
    margin-left: 50%;
    transform: translateX(-50%);
    width: 100px;
}

.slot-label {
    font-size: 10px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 8px;
}

.inserted-module {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    background: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 600;
}

.module-mini-led {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

/* Configuration */
.config-guide {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.config-steps h4 {
    font-size: 18px;
    margin-bottom: 24px;
}

.config-step-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.config-step {
    display: flex;
    align-items: center;
    gap: 16px;
}

.config-step-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 102, 255, 0.2);
    border: 2px solid var(--primary);
    border-radius: 50%;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    flex-shrink: 0;
}

.config-step-text {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Config Preview */
.config-preview {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.preview-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-dark);
}

.preview-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.preview-tab svg {
    width: 18px;
    height: 18px;
}

.preview-tab:hover {
    color: var(--text-primary);
    background: rgba(0, 102, 255, 0.05);
}

.preview-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: rgba(0, 102, 255, 0.1);
}

.preview-content {
    display: none;
    padding: 24px;
    background: var(--bg-dark);
}

.preview-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.preview-content img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.preview-caption {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid rgba(0, 102, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
}

.caption-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.caption-icon svg {
    width: 16px;
    height: 16px;
}

.app-terminal {
    flex: 1;
    background: #0d0d0d;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    background: #1a1a1a;
    font-size: 11px;
    color: #666;
}

.terminal-status {
    color: var(--accent);
}

.terminal-body {
    padding: 12px;
    display: flex;
    align-items: center;
}

.terminal-line {
    color: #888;
}

.terminal-cursor {
    width: 8px;
    height: 16px;
    background: var(--primary);
    animation: cursorBlink 1s infinite;
}

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

.app-config-display {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: #1a1a1a;
    border-radius: var(--radius-sm);
}

.config-row {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 12px;
}

.config-label {
    color: #666;
}

.config-value {
    color: var(--success);
}

/* Pricing */
.pricing {
    background: var(--bg-dark-2);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    align-items: stretch;
}

.pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(0, 102, 255, 0.2);
}

.pricing-badge-popular {
    position: absolute;
    top: 16px;
    right: -32px;
    width: 120px;
    padding: 6px 0;
    background: var(--accent);
    font-size: 11px;
    font-weight: 700;
    text-align: center;
    color: white;
    transform: rotate(45deg);
}

.pricing-header {
    padding: 32px;
    text-align: center;
    border-bottom: 1px solid var(--border-light);
}

.pricing-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.pricing-name {
    font-size: 24px;
    margin-bottom: 8px;
}

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

.pricing-image {
    padding: 20px;
    background: var(--bg-dark);
    min-height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-image img {
    width: 100%;
    height: 120px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.pricing-image.combo-image img {
    height: 120px;
}

.pricing-body {
    padding: 24px 32px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
    flex: 1;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

.pricing-features svg {
    width: 18px;
    height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

.pricing-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.price-label {
    font-size: 12px;
    color: var(--text-muted);
}

.price-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
}

.pricing-footer {
    padding: 0 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    color: var(--text-primary);
    background: transparent;
}

.faq-icon {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-answer a {
    color: var(--primary);
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--primary);
    transform: translateX(8px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-icon.telegram {
    background: rgba(0, 136, 204, 0.1);
    color: #0088cc;
}

.contact-icon.zalo {
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
}

.contact-icon.facebook {
    background: rgba(66, 103, 178, 0.1);
    color: #4267b2;
}

.contact-icon.email {
    background: rgba(255, 71, 87, 0.1);
    color: var(--accent);
}

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 12px;
    color: var(--text-muted);
}

.contact-value {
    font-size: 15px;
    font-weight: 600;
}

.contact-form-container {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.form-title {
    font-size: 20px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

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

.form-group select {
    cursor: pointer;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border-light);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 48px;
}

.footer-desc {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-muted);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-light);
}

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

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: white;
}

.footer-social svg {
    width: 20px;
    height: 20px;
}

/* Scroll to Top */
.scroll-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    color: white;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-4px);
    background: var(--primary-dark);
}

.scroll-top svg {
    width: 24px;
    height: 24px;
}

/* Toast */
.toast {
    position: fixed;
    top: 100px;
    right: 32px;
    padding: 16px 24px;
    background: var(--success);
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 600;
    transform: translateX(calc(100% + 32px));
    transition: transform 0.3s ease;
    z-index: 9999;
}

.toast.visible {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast-icon {
    width: 20px;
    height: 20px;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-badge {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-showcase {
        order: -1;
    }
    
    .showcase-main {
        max-width: 400px;
    }
    
    .showcase-features {
        justify-content: center;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .bind-flow {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bind-connector {
        display: none;
    }
    
    .connection-detail,
    .setup-grid,
    .config-guide,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .setup-visual {
        order: -1;
    }
    
    .app-preview {
        transform: none;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-light);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 16px 24px;
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }
    
    .header-cta {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-container {
        padding-top: 60px;
        gap: 32px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-stats {
        gap: 24px;
        justify-content: center;
    }
    
    .stat-divider {
        display: none;
    }
    
    .pinout-container {
        grid-template-columns: 1fr;
    }
    
    .connection-with-image {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .cart-content {
        max-width: 100%;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        justify-content: flex-start;
    }
    
    .tab-content {
        padding: 24px 16px;
    }
    
    .bind-flow {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
    
    .toast {
        left: 16px;
        right: 16px;
        top: auto;
        bottom: 80px;
        transform: translateY(100%);
    }
    
    .toast.visible {
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .pin-list {
        grid-template-columns: 1fr;
    }
    
    .specs-table th,
    .specs-table td {
        padding: 12px 16px;
    }
    
    .connection-diagram {
        flex-direction: column;
        gap: 16px;
    }
    
    .connection-wires {
        transform: rotate(90deg);
        height: 40px;
    }
    
    .wire {
        width: 3px;
        height: 40px;
    }
    
    .pc-diagram {
        flex-direction: column;
    }
    
    .usb-cable {
        transform: rotate(90deg);
    }
}

/* Cart Modal */
.cart-modal {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    visibility: hidden;
    pointer-events: none;
}

.cart-modal.active {
    visibility: visible;
    pointer-events: auto;
}

.cart-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cart-modal.active .cart-overlay {
    opacity: 1;
}

.cart-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 420px;
    height: 100%;
    background: var(--bg-card);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.cart-modal.active .cart-content {
    transform: translateX(0);
}

.cart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-dark);
}

.cart-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    margin: 0;
}

.cart-title svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.cart-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition);
}

.cart-close:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--accent);
}

.cart-close svg {
    width: 20px;
    height: 20px;
}

.cart-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.cart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-muted);
}

.cart-empty svg {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.cart-empty p {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.cart-empty span {
    font-size: 14px;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cart-item {
    display: flex;
    gap: 16px;
    padding: 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    position: relative;
    animation: fadeIn 0.3s ease;
}

.cart-item-image {
    width: 80px;
    height: 80px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.cart-item-image svg {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.cart-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cart-item-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.cart-item-desc {
    font-size: 12px;
    color: var(--text-muted);
}

.cart-item-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.cart-item-remove {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    border-radius: 4px;
}

.cart-item-remove:hover {
    background: rgba(255, 71, 87, 0.1);
    color: var(--accent);
}

.cart-item-remove svg {
    width: 16px;
    height: 16px;
}

.cart-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-light);
    background: var(--bg-dark);
}

.cart-summary {
    margin-bottom: 16px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.summary-total {
    border-top: 1px solid var(--border-light);
    margin-top: 8px;
    padding-top: 16px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.summary-total span:last-child {
    color: var(--primary);
}

.cart-note {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* Cart Button in Header */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cart-btn {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.cart-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.cart-btn svg {
    width: 22px;
    height: 22px;
}

.cart-count {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    border-radius: 10px;
    font-size: 11px;
    font-weight: 700;
    color: white;
    padding: 0 6px;
}

.cart-count:empty,
.cart-count[data-count="0"] {
    display: none;
}

/* Print Styles */
@media print {
    .header,
    .scroll-top,
    .toast,
    .cart-modal {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section {
        padding: 20px 0;
    }
}