/* ============================================
   IODJ-ULTRA Marketing Website Styles
   Theme Color: #007AD8
   ============================================ */

:root {
    --primary-color: #007AD8;
    --primary-dark: #005FA3;
    --primary-light: #3399E6;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --bg-white: #FFFFFF;
    --bg-light: #F9FAFB;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    font-size: 16px;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.header .container {
    position: relative;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-dark);
}

.logo img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

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

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

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

.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8f0f7 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-top: 0.5rem;
}

.hero-image {
    position: relative;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

/* ============================================
   Features Section
   ============================================ */

.features {
    padding: 100px 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    font-size: 1.5rem;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works {
    padding: 100px 0;
    background: var(--bg-light);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.step-item {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.step-item.step-reverse {
    grid-template-columns: 1fr 1fr auto;
}

.step-item.step-reverse .step-number {
    order: 3;
}

.step-item.step-reverse .step-content {
    order: 1;
}

.step-item.step-reverse .step-image {
    order: 2;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content {
    padding: 1rem;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.step-description {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 1.1rem;
}

.step-image {
    position: relative;
}

.step-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

/* ============================================
   Use Cases Section
   ============================================ */

.use-cases {
    padding: 100px 0;
    background: var(--bg-white);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.use-case-card {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.use-case-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.use-case-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.use-case-description {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials {
    padding: 100px 0;
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--primary-color);
}

.testimonial-stars {
    color: #FBBF24;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.testimonial-text {
    color: var(--text-gray);
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-size: 1.1rem;
}

.testimonial-author {
    font-weight: 600;
    color: var(--text-dark);
}

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

.download-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.cta-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-buttons {
    margin-bottom: 3rem;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.cta-feature i {
    font-size: 1.3rem;
}

/* ============================================
   Page Hero (for inner pages)
   ============================================ */

.page-hero {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.page-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
}

/* ============================================
   About Page
   ============================================ */

.about-section {
    padding: 80px 0;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.about-content-reverse .about-text {
    order: 2;
}

.about-content-reverse .about-image {
    order: 1;
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-image {
    position: relative;
}

.about-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    object-fit: cover;
}

.feature-list {
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.values-section {
    padding: 80px 0;
    background: var(--bg-white);
}

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

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.value-card {
    text-align: center;
    padding: 2rem;
}

.value-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.value-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.value-description {
    color: var(--text-gray);
    line-height: 1.7;
}

.timeline-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    max-width: 800px;
    margin: 3rem auto 0;
    position: relative;
    padding-left: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 4px solid var(--bg-light);
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.timeline-description {
    color: var(--text-gray);
    line-height: 1.7;
}

.tech-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.tech-item {
    text-align: center;
    padding: 2rem;
}

.tech-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.tech-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.tech-item p {
    color: var(--text-gray);
}

/* ============================================
   Download Page
   ============================================ */

.download-section {
    padding: 80px 0;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.download-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.download-buttons {
    margin-bottom: 3rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: #000;
    color: white;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-btn i {
    font-size: 2rem;
}

.download-btn-text {
    display: flex;
    flex-direction: column;
}

.download-btn-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.download-btn-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.download-image {
    position: relative;
}

.download-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

.qrcode-container {
    text-align: center;
}

.qrcode-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.qrcode-wrapper {
    display: inline-block;
    padding: 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 1rem;
}

.qrcode-img {
    width: 200px;
    height: 200px;
    display: block;
}

.qrcode-description {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.requirements-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.requirement-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.requirement-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.requirement-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.requirement-text {
    color: var(--text-gray);
}

.steps-section {
    padding: 80px 0;
    background: var(--bg-white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.step-card {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 16px;
    position: relative;
}

.step-card .step-number {
    margin: 0 auto 1.5rem;
}

.step-card .step-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.step-card .step-description {
    color: var(--text-gray);
    line-height: 1.7;
}

.features-reminder {
    padding: 80px 0;
    background: var(--bg-light);
}

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 800px;
    margin: 3rem auto 0;
}

.feature-reminder-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.feature-reminder-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.help-section {
    padding: 80px 0;
    background: var(--bg-white);
    text-align: center;
}

.help-content {
    max-width: 600px;
    margin: 0 auto;
}

.help-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* ============================================
   Contact Page
   ============================================ */

.contact-section {
    padding: 80px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 16px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.required {
    color: #EF4444;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    resize: vertical;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-gray);
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.2rem;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    display: none;
}

.form-message.success {
    background: #D1FAE5;
    color: #065F46;
    display: block;
}

.form-message.error {
    background: #FEE2E2;
    color: #991B1B;
    display: block;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-item {
    display: flex;
    gap: 1.5rem;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-info-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.contact-info-text {
    color: var(--text-gray);
    margin-bottom: 0.5rem;
}

.contact-info-text a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-info-text a:hover {
    text-decoration: underline;
}

.contact-info-note {
    font-size: 0.9rem;
    color: var(--text-gray);
    opacity: 0.8;
}

.contact-help {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 16px;
}

.contact-help-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.contact-help-list {
    list-style: none;
}

.contact-help-list li {
    margin-bottom: 0.5rem;
    color: var(--text-gray);
}

.contact-help-list a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-help-list a:hover {
    text-decoration: underline;
}

/* ============================================
   Legal Pages (Terms & Privacy)
   ============================================ */

.legal-section {
    padding: 80px 0;
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-intro {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.legal-section-item {
    margin-bottom: 3rem;
}

.legal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.legal-title i {
    color: var(--primary-color);
}

.legal-list {
    margin: 1rem 0;
    padding-left: 2rem;
}

.legal-list li {
    margin-bottom: 0.8rem;
    color: var(--text-gray);
    line-height: 1.7;
}

.contact-card {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 12px;
    margin-top: 1rem;
}

.contact-card p {
    margin-bottom: 0.5rem;
    color: var(--text-gray);
}

.contact-card a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

.legal-update {
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    text-align: center;
    color: var(--text-gray);
}

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

.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-list li {
    margin-bottom: 0.8rem;
}

.footer-list a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-list a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

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

@media (max-width: 1024px) {
    .hero-content,
    .about-content,
    .download-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-content-reverse .about-text,
    .about-content-reverse .about-image {
        order: initial;
    }

    .features-grid,
    .use-cases-grid,
    .values-grid,
    .tech-grid,
    .requirements-grid,
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .nav {
        position: relative;
    }

    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
        display: none;
        gap: 0;
        margin-top: 1rem;
    }

    .nav-list.active {
        display: flex;
    }

    .nav-list li {
        width: 100%;
    }

    .nav-list a {
        display: block;
        padding: 1rem;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid,
    .use-cases-grid,
    .values-grid,
    .tech-grid,
    .requirements-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .step-item,
    .step-item.step-reverse {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .step-number {
        margin: 0 auto 1rem;
    }

    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

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

    .cta-features {
        flex-direction: column;
        gap: 1rem;
    }
}