/* ============================================
   RpOK Site 4 - Professional Corporate Design
   ============================================ */

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

:root {
    /* Color Palette - Professional Blue/Indigo Theme */
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #6366f1;
    --secondary: #3b82f6;
    --accent: #06b6d4;

    /* Neutrals */
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-dark: #334155;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --gray-lighter: #e2e8f0;
    --bg-light: #f8fafc;
    --white: #ffffff;

    /* Typography */
    --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --gap-xs: 0.5rem;
    --gap-sm: 1rem;
    --gap-md: 1.5rem;
    --gap-lg: 2rem;
    --gap-xl: 3rem;
    --gap-2xl: 4rem;
    --gap-3xl: 6rem;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.15);
    --shadow-blue: 0 8px 24px rgba(79, 70, 229, 0.3);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 350ms;
}

/* Global */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--gap-md);
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--gap-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
    margin-bottom: var(--gap-md);
    letter-spacing: -0.01em;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }

p {
    margin-bottom: var(--gap-sm);
    color: var(--gray);
    line-height: 1.8;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease);
}

a:hover {
    color: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(79, 70, 229, 0.4);
}

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

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

.btn-large {
    padding: 18px 44px;
    font-size: 1.125rem;
}

/* SPLIT NAVIGATION - Logo Left, Links Right */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--duration-normal) var(--ease);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap-md);
    max-width: 1400px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nav-logo img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.nav-logo span {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--gap-sm);
}

.nav-links a {
    color: var(--gray-dark);
    font-weight: 600;
    padding: var(--gap-xs) var(--gap-md);
    border-radius: var(--radius-full);
    transition: all var(--duration-fast) var(--ease);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
    background-color: var(--primary);
}

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

.nav-toggle span {
    width: 26px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 2px;
    transition: all var(--duration-normal) var(--ease);
}

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

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

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

/* Badge */
.badge {
    display: inline-block;
    padding: 8px 20px;
    background-color: rgba(79, 70, 229, 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--gap-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 160px 1.5rem 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)" /></svg>');
    opacity: 0.5;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--white);
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--gap-md);
    line-height: 1.1;
}

.hero p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.25rem;
    margin-bottom: var(--gap-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--gap-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero .btn-primary {
    background-color: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.hero .btn-primary:hover {
    background-color: var(--bg-light);
    transform: translateY(-3px);
}

.hero .btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

/* Sections */
.section {
    padding: var(--gap-3xl) var(--gap-md);
}

.section-alt {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--gap-2xl);
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: var(--gap-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray);
    line-height: 1.8;
}

/* Stats */
.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gap-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.stat-box {
    background: var(--white);
    padding: var(--gap-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--duration-normal) var(--ease);
    border: 2px solid transparent;
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: var(--gap-xs);
    line-height: 1;
}

.stat-label {
    font-size: 1rem;
    color: var(--gray);
    font-weight: 600;
}

/* Features - 4 Column Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gap-lg);
}

.feature-box {
    background: var(--white);
    padding: var(--gap-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--duration-normal) var(--ease);
    border: 2px solid var(--gray-lighter);
}

.feature-box:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: var(--gap-md);
    display: block;
}

.feature-box h3 {
    font-size: 1.375rem;
    margin-bottom: var(--gap-sm);
    color: var(--dark);
}

.feature-box p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray);
}

/* Steps - 3 Column Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-2xl);
}

.step-box {
    background: var(--white);
    padding: var(--gap-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-lg);
    transition: all var(--duration-normal) var(--ease);
}

.step-box:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.step-badge {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    box-shadow: var(--shadow-blue);
}

.step-icon {
    font-size: 4rem;
    margin: var(--gap-md) 0;
    display: block;
}

.step-box h3 {
    font-size: 1.5rem;
    margin-bottom: var(--gap-md);
    color: var(--dark);
}

.step-box p {
    line-height: 1.8;
}

/* Screenshot Gallery - Single Row with Horizontal Scroll */
.screenshot-gallery {
    display: flex;
    gap: var(--gap-md);
    overflow-x: auto;
    padding: var(--gap-md) 0;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.screenshot-gallery::-webkit-scrollbar {
    height: 10px;
}

.screenshot-gallery::-webkit-scrollbar-track {
    background: var(--gray-lighter);
    border-radius: var(--radius-full);
}

.screenshot-gallery::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

.screenshot-gallery::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

.screenshot-item {
    flex: 0 0 auto;
    width: 280px;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease);
}

.screenshot-item:hover {
    transform: scale(1.05);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
}

.lightbox-content img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: var(--white);
    font-size: 50px;
    font-weight: 300;
    cursor: pointer;
    z-index: 10000;
    transition: all var(--duration-fast) var(--ease);
}

.lightbox-close:hover {
    color: var(--primary-light);
    transform: scale(1.1);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--white);
    font-size: 60px;
    font-weight: 300;
    cursor: pointer;
    padding: 20px;
    user-select: none;
    transition: all var(--duration-fast) var(--ease);
}

.lightbox-nav:hover {
    color: var(--primary-light);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gap-lg);
}

.info-box {
    background: var(--white);
    padding: var(--gap-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--duration-normal) var(--ease);
}

.info-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.info-icon {
    font-size: 3rem;
    margin-bottom: var(--gap-md);
    display: block;
}

.info-box h3 {
    font-size: 1.25rem;
    margin-bottom: var(--gap-sm);
}

.info-box p {
    font-size: 0.9375rem;
    margin-bottom: var(--gap-xs);
}

/* Download Box */
.download-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: var(--gap-2xl);
    border-radius: var(--radius-2xl);
    text-align: center;
    color: var(--white);
    box-shadow: var(--shadow-xl);
}

.download-box h3 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: var(--gap-md);
}

.download-box p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
    margin-bottom: var(--gap-xl);
}

.download-info {
    display: flex;
    justify-content: center;
    gap: var(--gap-2xl);
    margin: var(--gap-xl) 0;
    flex-wrap: wrap;
}

.download-info-item {
    text-align: center;
}

.download-info-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--gap-xs);
}

.download-info-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.download-box .btn {
    margin-top: var(--gap-md);
}

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

.download-box .btn-primary:hover {
    background-color: var(--bg-light);
}

/* Testimonials */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-xl);
}

.testimonial-box {
    background: var(--white);
    padding: var(--gap-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all var(--duration-normal) var(--ease);
}

.testimonial-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-quote {
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.2;
    position: absolute;
    top: 20px;
    left: 20px;
    line-height: 1;
}

.testimonial-text {
    font-style: italic;
    color: var(--gray-dark);
    margin-bottom: var(--gap-md);
    position: relative;
    z-index: 1;
}

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

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.25rem;
}

.testimonial-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.testimonial-role {
    font-size: 0.875rem;
    color: var(--gray);
}

/* FAQ */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: var(--gap-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--gray-lighter);
    transition: all var(--duration-fast) var(--ease);
}

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

.faq-question {
    padding: var(--gap-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--gap-md);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--dark);
    transition: all var(--duration-fast) var(--ease);
}

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

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform var(--duration-normal) var(--ease);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-slow) var(--ease);
}

.faq-answer-content {
    padding: 0 var(--gap-lg) var(--gap-lg);
    color: var(--gray);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* Contact Form */
.contact-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: var(--white);
    padding: var(--gap-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.form-field {
    margin-bottom: var(--gap-lg);
}

.form-field label {
    display: block;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--gap-xs);
    font-size: 0.9375rem;
}

.form-field input,
.form-field textarea,
.form-field select {
    width: 100%;
    padding: var(--gap-md);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--duration-fast) var(--ease);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-field textarea {
    min-height: 180px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    padding: var(--gap-md);
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease);
}

.btn-submit:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue);
}

.form-status {
    margin-top: var(--gap-md);
    padding: var(--gap-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-status.success {
    background-color: #10b981;
    color: var(--white);
}

.form-status.error {
    background-color: #ef4444;
    color: var(--white);
}

/* MULTI-COLUMN FOOTER */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: var(--gap-3xl) var(--gap-md) var(--gap-lg);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--gap-2xl);
    margin-bottom: var(--gap-2xl);
}

.footer-about h3 {
    color: var(--white);
    font-size: 1.75rem;
    margin-bottom: var(--gap-md);
}

.footer-about p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: var(--gap-md);
}

.footer-section h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--gap-md);
    font-weight: 700;
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--duration-fast) var(--ease);
}

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

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    line-height: 1.6;
}

.footer-contact p {
    margin-bottom: var(--gap-sm);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--gap-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Legal */
.legal-container {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.9;
}

.legal-container h2 {
    font-size: 2rem;
    margin-top: var(--gap-2xl);
    margin-bottom: var(--gap-md);
    color: var(--dark);
}

.legal-container h3 {
    font-size: 1.5rem;
    margin-top: var(--gap-xl);
    margin-bottom: var(--gap-md);
    color: var(--dark);
}

.legal-container p {
    margin-bottom: var(--gap-md);
}

.legal-container ul {
    margin-bottom: var(--gap-md);
    padding-left: var(--gap-xl);
}

.legal-container li {
    margin-bottom: var(--gap-sm);
    color: var(--gray);
}

.legal-container strong {
    color: var(--dark);
}

/* Responsive */
@media (max-width: 1024px) {
    .stats-container,
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gap-md);
    }

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

    .info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--gap-md);
    }

    .section {
        padding: var(--gap-2xl) var(--gap-md);
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--gap-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--duration-normal) var(--ease);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-container {
        padding: var(--gap-sm) var(--gap-md);
    }

    /* Hero Section */
    .hero {
        padding: 120px var(--gap-md) 60px !important;
    }

    .hero > .hero-content > div:first-child {
        margin-bottom: 20px !important;
    }

    .hero > .hero-content > div:first-child > div {
        padding: 10px !important;
        border-radius: 24px !important;
    }

    .hero img {
        width: 85px !important;
        height: 85px !important;
    }

    .hero h1 {
        font-size: 2.25rem;
        line-height: 1.2;
    }

    .hero p {
        font-size: 1rem;
        margin-bottom: var(--gap-lg);
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--gap-sm);
    }

    /* Sections */
    .section {
        padding: var(--gap-xl) var(--gap-md);
    }

    .section-title {
        font-size: 1.875rem;
        margin-bottom: var(--gap-sm);
    }

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

    .section-header {
        margin-bottom: var(--gap-xl);
    }

    /* Grids */
    .stats-container,
    .steps-grid,
    .testimonial-grid,
    .info-grid,
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--gap-md);
    }

    /* Stat Boxes */
    .stat-box {
        padding: var(--gap-lg);
    }

    .stat-number {
        font-size: 2.5rem;
    }

    /* Feature Boxes */
    .feature-box {
        padding: var(--gap-lg);
    }

    .feature-icon {
        font-size: 2.75rem;
    }

    /* Step Boxes */
    .step-box {
        padding: var(--gap-xl) var(--gap-lg);
    }

    .step-icon {
        font-size: 3rem;
    }

    /* Download Box */
    .download-box {
        padding: var(--gap-xl) var(--gap-lg);
    }

    .download-box h3 {
        font-size: 1.75rem;
    }

    .download-box p {
        font-size: 1rem;
    }

    .download-info {
        flex-direction: column;
        gap: var(--gap-md);
        margin: var(--gap-lg) 0;
    }

    .download-info-value {
        font-size: 1.25rem;
    }

    /* Testimonials */
    .testimonial-box {
        padding: var(--gap-lg);
    }

    .testimonial-quote {
        font-size: 2.5rem;
    }

    /* FAQ */
    .faq-question {
        padding: var(--gap-md);
        font-size: 1rem;
    }

    .faq-answer-content {
        padding: 0 var(--gap-md) var(--gap-md);
        font-size: 0.9375rem;
    }

    /* Footer */
    .footer {
        padding: var(--gap-2xl) var(--gap-md) var(--gap-lg);
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--gap-xl);
    }

    /* Buttons */
    .btn-large {
        padding: 16px 32px;
        font-size: 1rem;
    }

    /* Info Boxes */
    .info-box {
        padding: var(--gap-lg);
    }

    .info-icon {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    /* Typography */
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.625rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.125rem; }

    /* Hero */
    .hero {
        padding: 100px var(--gap-md) 50px !important;
    }

    .hero > .hero-content > div:first-child {
        margin-bottom: 16px !important;
    }

    .hero > .hero-content > div:first-child > div {
        padding: 8px !important;
        border-radius: 20px !important;
    }

    .hero img {
        width: 70px !important;
        height: 70px !important;
        border-radius: 16px !important;
    }

    .hero h1 {
        font-size: 1.875rem;
        line-height: 1.2;
        margin-bottom: var(--gap-sm);
    }

    .hero p {
        font-size: 0.9375rem;
        line-height: 1.6;
    }

    .badge {
        font-size: 0.75rem;
        padding: 6px 16px;
        margin-bottom: var(--gap-sm);
    }

    /* Sections */
    .section {
        padding: var(--gap-2xl) var(--gap-sm);
    }

    .section-title {
        font-size: 1.625rem;
        line-height: 1.2;
    }

    .section-subtitle {
        font-size: 0.9375rem;
    }

    /* Container */
    .container {
        padding: 0 var(--gap-sm);
    }

    /* Stat Boxes */
    .stat-box {
        padding: var(--gap-md);
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.875rem;
    }

    /* Feature/Info Boxes */
    .feature-box,
    .info-box {
        padding: var(--gap-md);
    }

    .feature-icon,
    .info-icon {
        font-size: 2.5rem;
        margin-bottom: var(--gap-sm);
    }

    .feature-box h3,
    .info-box h3 {
        font-size: 1.125rem;
        margin-bottom: var(--gap-xs);
    }

    .feature-box p,
    .info-box p {
        font-size: 0.875rem;
    }

    /* Step Boxes */
    .step-box {
        padding: var(--gap-lg) var(--gap-md);
    }

    .step-badge {
        width: 44px;
        height: 44px;
        font-size: 1.25rem;
        top: -18px;
    }

    .step-icon {
        font-size: 2.5rem;
        margin: var(--gap-sm) 0;
    }

    .step-box h3 {
        font-size: 1.125rem;
    }

    .step-box p {
        font-size: 0.875rem;
    }

    /* Download Box */
    .download-box {
        padding: var(--gap-lg) var(--gap-md);
        border-radius: var(--radius-xl);
    }

    .download-box h3 {
        font-size: 1.5rem;
    }

    .download-info-label {
        font-size: 0.8125rem;
    }

    .download-info-value {
        font-size: 1.125rem;
    }

    /* Testimonials */
    .testimonial-box {
        padding: var(--gap-md);
    }

    .testimonial-quote {
        font-size: 2rem;
        top: 15px;
        left: 15px;
    }

    .testimonial-text {
        font-size: 0.875rem;
    }

    .testimonial-avatar {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }

    .testimonial-info h4 {
        font-size: 0.9375rem;
    }

    .testimonial-role {
        font-size: 0.8125rem;
    }

    /* FAQ */
    .faq-question {
        padding: var(--gap-sm) var(--gap-md);
        font-size: 0.9375rem;
    }

    .faq-icon {
        font-size: 1.25rem;
    }

    .faq-answer-content {
        padding: 0 var(--gap-md) var(--gap-md);
        font-size: 0.875rem;
    }

    /* Buttons */
    .btn {
        padding: 12px 24px;
        font-size: 0.9375rem;
    }

    .btn-large {
        padding: 14px 28px;
        font-size: 0.9375rem;
    }

    /* Screenshots */
    .screenshot-item {
        width: 220px;
    }

    /* Footer */
    .footer {
        padding: var(--gap-xl) var(--gap-sm) var(--gap-md);
    }

    .footer-about h3 {
        font-size: 1.5rem;
    }

    .footer-about p,
    .footer-section p {
        font-size: 0.875rem;
    }

    .footer-section h4 {
        font-size: 1rem;
    }

    /* Nav Logo */
    .nav-logo img {
        width: 40px;
        height: 40px;
    }

    .nav-logo span {
        font-size: 1.5rem;
    }

    /* Lightbox Navigation */
    .lightbox-close {
        top: 10px;
        right: 20px;
        font-size: 40px;
    }

    .lightbox-nav {
        font-size: 40px;
        padding: 10px;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }
}

@media (max-width: 375px) {
    /* Extra small devices */
    .hero h1 {
        font-size: 1.625rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn-large {
        padding: 12px 24px;
        font-size: 0.875rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .feature-icon,
    .info-icon {
        font-size: 2.25rem;
    }
}