/* ====================================
   CSS Variables & Root Styling
   ==================================== */

:root {
    /* Dark theme colors */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --border-color: #333333;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-light: #1e40af;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --font-mono: 'Monaco', 'Menlo', 'Ubuntu Mono', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 1.75rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3.25rem;

    /* Sizes */
    --max-width: 1400px;
    --navbar-height: 70px;

    /* Transitions */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light mode */
[data-theme="light"] {
    --bg-primary: #f2f1ed;
    --bg-secondary: #e9e7e1;
    --bg-tertiary: #ded9d1;
    --text-primary: #211f1c;
    --text-secondary: #47443d;
    --text-tertiary: #6f6a61;
    --border-color: #d7d2c8;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
    animation: fadeIn 0.6s ease-out;
}

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

/* ====================================
   Typography
   ==================================== */

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 700;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h4 {
    font-size: 1.125rem;
}

h5 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

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

a:hover, a:focus {
    color: var(--accent-hover);
    outline: none;
}

strong {
    font-weight: 600;
    color: var(--text-primary);
}

code {
    font-family: var(--font-mono);
    background-color: var(--bg-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 3px;
    font-size: 0.9em;
    color: var(--accent-color);
}

.code-block {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-color);
    padding: var(--spacing-lg);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 1rem;
    margin: var(--spacing-lg) 0;
    overflow-x: auto;
}

.code-block code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.arrow {
    color: var(--accent-color);
    margin: 0 var(--spacing-sm);
}

/* ====================================
   Container & Sections
   ==================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
    border-bottom: 1px solid var(--border-color);
    animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ====================================
   Navigation Bar
   ==================================== */

.navbar {
    position: sticky;
    top: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(26, 26, 26, 0.8);
}

.navbar-container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: transform var(--transition);
}

.navbar-logo:hover {
    transform: scale(1.05);
}

.logo-img {
    width: 45px;
    height: 45px;
    border-radius: 6px;
    object-fit: cover;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
    padding-bottom: 4px;
}

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

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

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

.nav-link.active {
    color: var(--accent-color);
}

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

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

/* Theme toggle */
.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-toggle:hover, .theme-toggle:focus {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent-color);
    outline: none;
}

.theme-toggle i {
    transition: transform var(--transition);
}

.theme-toggle:active i {
    transform: rotate(20deg);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    cursor: pointer;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    justify-content: center;
    align-items: center;
    transition: all var(--transition);
}

.menu-toggle:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent-color);
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ====================================
   Responsive - Mobile Navigation
   ==================================== */

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background-color: var(--bg-secondary);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition);
    }

    .nav-menu.active {
        max-height: 500px;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-link {
        display: block;
        padding: var(--spacing-lg);
        color: var(--text-secondary);
    }

    .nav-link:hover {
        background-color: rgba(59, 130, 246, 0.1);
        color: var(--accent-color);
    }

    .logo-text {
        display: none;
    }
}

/* ====================================
   Buttons
   ==================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    gap: var(--spacing-sm);
    font-family: var(--font-family);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    border-color: transparent;
}

.btn-primary:hover, .btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
    outline: none;
    color: black;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover, .btn-outline:focus {
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.1);
    outline: none;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover, .btn-secondary:focus {
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.1);
    outline: none;
}

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

/* ====================================
   Hero Section
   ==================================== */

.hero {
    padding: calc(var(--navbar-height) + var(--spacing-3xl)) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    animation: fadeInLeft 0.8s ease-out;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-title {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
}

.hero-title-text {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.typing-cursor {
    display: inline-block;
    width: 3px;
    height: 0.85em;
    margin-left: 4px;
    background-color: var(--accent-color);
    animation: blinkCursor 0.9s step-end infinite;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-motto {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.code-text {
    color: var(--accent-color);
    font-weight: 600;
}

.hero-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Carousel */
.carousel-container {
    animation: fadeInRight 0.8s ease-out;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    aspect-ratio: 16 / 10.6;
    margin-top: var(--spacing-lg);
    box-shadow: 0 24px 48px -20px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
}

.carousel-window-bar {
    display: flex;
    align-items: center;
    gap: 7px;
    height: 32px;
    flex-shrink: 0;
    padding: 0 var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.win-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.win-dot.red {
    background-color: #ff5f57;
}

.win-dot.yellow {
    background-color: #febc2e;
}

.win-dot.green {
    background-color: #28c840;
}

.carousel-inner {
    display: flex;
    flex: 1;
    min-height: 0;
    transition: transform var(--transition);
}

.carousel-item {
    min-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    overflow: hidden;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.carousel:hover .carousel-item img {
    transform: scale(1.03);
}

.carousel-control {
    position: absolute;
    top: calc(50% + 16px);
    transform: translateY(-50%);
    background: rgba(15, 15, 15, 0.45);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    z-index: 10;
    font-size: 1.1rem;
    opacity: 0;
}

.carousel:hover .carousel-control {
    opacity: 1;
}

.carousel-control:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateY(-50%) scale(1.08);
}

.carousel-control.prev {
    left: var(--spacing-lg);
}

.carousel-control.next {
    right: var(--spacing-lg);
}

.carousel-dots {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
}

.dot.active {
    width: 22px;
    background-color: var(--accent-color);
}

.dot:hover {
    background-color: rgba(255, 255, 255, 0.6);
}

/* Features grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.feature-item {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background-color: rgba(59, 130, 246, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition);
}

.feature-item:hover {
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.1);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
}

.feature-item h3 {
    margin: var(--spacing-md) 0;
    font-size: 1.1rem;
}

.feature-item p {
    font-size: 0.95rem;
    color: var(--text-tertiary);
    margin: 0;
}

/* ====================================
   Content Blocks
   ==================================== */

.content-block {
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--border-color);
}

.content-block:last-child {
    border-bottom: none;
}

.feature-list {
    list-style: none;
    margin: var(--spacing-lg) 0;
    padding-left: 0;
}

.feature-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.benchmark-note {
    background-color: rgba(59, 130, 246, 0.05);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.benchmark-note i {
    color: var(--accent-color);
    margin-top: 2px;
}

.benchmark-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.benchmark-table thead {
    background-color: rgba(59, 130, 246, 0.1);
}

.benchmark-table th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.benchmark-table td {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.benchmark-table tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
}

.benchmark-result {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background-color: rgba(59, 130, 246, 0.05);
    border-left: 3px solid var(--accent-color);
    border-radius: 8px;
}

/* ====================================
   Download Section
   ==================================== */

.os-selector-top {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
    justify-content: center;
    flex-wrap: wrap;
}

.os-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background-color: transparent;
    color: var(--text-primary);
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition);
}

.os-btn:hover {
    border-color: var(--accent-color);
    background-color: rgba(59, 130, 246, 0.1);
}

.os-btn.active {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    border-color: transparent;
}

.os-btn i {
    font-size: 1.25rem;
}

.download-tabs {
    margin-bottom: var(--spacing-2xl);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

.download-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), transparent);
    padding: var(--spacing-3xl) var(--spacing-2xl);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.download-icon {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
}

.download-card h3 {
    margin-top: 0;
    font-size: 1.5rem;
}

.file-type, .file-info {
    font-size: 0.95rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-lg);
}

.install-info {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-color);
    text-align: left;
}

.install-info h4 {
    margin-top: 0;
}

/* ====================================
   Help Section - FAQ
   ==================================== */

.faq-list {
    margin: var(--spacing-lg) 0;
}

details {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(59, 130, 246, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
}

details:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-color);
}

details summary {
    font-weight: 600;
    color: var(--text-primary);
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

details summary::-webkit-details-marker {
    display: none;
}

details summary::after {
    content: '›';
    font-size: 1.5rem;
    color: var(--accent-color);
    transition: transform var(--transition);
}

details[open] summary::after {
    transform: rotate(90deg);
}

details[open] summary {
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
}

details p {
    margin: var(--spacing-md) 0 0;
    color: var(--text-secondary);
}

/* ====================================
   Step List
   ==================================== */

.step-list {
    list-style: none;
    padding-left: 0;
    counter-reset: step-counter;
}

.step-list li {
    counter-increment: step-counter;
    padding: var(--spacing-lg) 0 var(--spacing-lg) var(--spacing-xl);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.8;
}

.step-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: -8px;
    top: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 600;
}

/* ====================================
   Contact Section
   ==================================== */

.contact-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
    font-size: 1.1rem;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: rgba(59, 130, 246, 0.05);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    text-align: center;
    color: var(--text-primary);
    transition: all var(--transition);
}

.contact-card:hover, .contact-card:focus {
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-4px);
    outline: none;
}

.contact-card i {
    font-size: 2rem;
    color: var(--accent-color);
}

.contact-card span {
    font-weight: 600;
    font-size: 0.95rem;
}

/* ====================================
   Footer
   ==================================== */

footer {
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--border-color);
}

.footer-section h3, .footer-section h4 {
    font-size: 1.1rem;
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.footer-motto {
    color: var(--accent-color);
    font-family: var(--font-mono);
    font-weight: 500;
}

.footer-tagline {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--accent-color);
    font-size: 0.95rem;
    transition: color var(--transition);
}

.footer-section a:hover {
    color: var(--accent-hover);
}

.footer-meta {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* ====================================
   Scroll to Top Button
   ==================================== */

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(100px) scale(0.8);
    transition: all var(--transition);
    z-index: 999;
    box-shadow: 0 3px 20px rgba(59, 130, 246, 0.3);
}

.scroll-to-top.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.scroll-to-top:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4);
}

.scroll-to-top:active {
    transform: translateY(0) scale(1);
}

.scroll-logo {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    /* object-fit: cover; */
}

/* ====================================
   Responsive Design
   ==================================== */

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .carousel-container {
        order: -1;
    }

    .carousel {
        aspect-ratio: 16 / 9.6;
    }
}

@media (max-width: 768px) {
    :root {
        --navbar-height: 60px;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .navbar-container {
        padding: 0 var(--spacing-md);
    }

    .nav-menu {
        gap: 0;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .contact-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .carousel-control {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .benchmark-table {
        font-size: 0.9rem;
    }

    .benchmark-table th, .benchmark-table td {
        padding: var(--spacing-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .scroll-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }

    .scroll-logo {
        width: 30px;
        height: 30px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.25rem;
        --spacing-2xl: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .navbar-container {
        gap: var(--spacing-sm);
    }

    .logo-text {
        display: none;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-motto {
        font-size: 0.95rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .contact-links {
        grid-template-columns: 1fr;
    }

    .payment-methods {
        grid-template-columns: 1fr;
    }

    .os-selector-top {
        flex-direction: column;
    }

    .os-btn {
        width: 100%;
        justify-content: center;
    }

    .btn {
        width: 100%;
    }

    .carousel {
        aspect-ratio: 16 / 9.6;
    }

    .hero-buttons {
        flex-direction: column;
    }
}

/* ====================================
   Accessibility
   ==================================== */

:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

@media print {
    .navbar, footer, .theme-toggle, .menu-toggle, .scroll-to-top {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }

    a {
        color: #0066cc;
    }

    .section {
        page-break-inside: avoid;
    }
}