/* ===================================
   SiiChartlet Website Styles
   Modern, Professional, Responsive
   =================================== */

/* ===== CSS Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #0066cc;
    --primary-dark: #004d99;
    --secondary-color: #00acc1;
    --accent-color: #ff6b35;
    --text-dark: #1a1a1a;
    --text-medium: #2d2d2d;
    --text-light: #555555;
    --background-light: #f8f9fa;
    --background-white: #ffffff;
    --border-color: #e0e0e0;
    --success-color: #4caf50;
    --error-color: #f44336;
    
    /* Typography */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'Courier New', Courier, monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

body {
    font-family: var(--font-primary);
    color: #1a1a1a;
    line-height: 1.6;
    font-size: 16px;
    background-color: var(--background-white);
    font-weight: 500;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: #1a1a1a;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: #1a1a1a;
    font-weight: 500;
}

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

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

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-primary);
}

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

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

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

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* ===== Navigation ===== */
.navbar {
    background-color: var(--background-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem var(--spacing-sm);
    gap: 1rem;
    flex-wrap: nowrap;
}

.logo {
    flex-shrink: 0;
}

.logo img {
    height: 80px;
    width: auto;
    max-width: 100%;
    display: block;
    object-fit: contain;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: opacity var(--transition-fast);
}

.logo a:hover {
    opacity: 0.8;
}

.logo span {
    display: inline-block;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    flex-wrap: nowrap;
}

.nav-menu a {
    color: var(--text-medium);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background-color: rgba(0, 102, 204, 0.1);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/Home_Page_Banner5.png');
    /*background: url('../images/Home_Page_Banner.png'); */
    background-size: 100% auto;
    background-position: center top;
    background-repeat: no-repeat;
    background-attachment: scroll;
    background-color: #ffffff;
    color: white;
    padding: 0;
    text-align: center;
    position: relative;
    min-height: auto;
    display: flex;
    align-items: center;
}

.hero .container {
    position: relative;
    z-index: 1;
    padding: var(--spacing-xl) var(--spacing-sm);
}

.hero h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Features Section ===== */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

.features h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card--wide {
    grid-column: span 2;
}

.feature-card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

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

.feature-icon {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.feature-icon svg {
    width: 48px;
    height: 48px;
}

/* ===== Page Header ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
}

/* .developers-page .page-header {
    background: url("../images/developers-header.png") center/cover no-repeat;
    color: #000;
}

.developers-page .page-header h1 {
    color: #000;
}

.developers-page .page-header .subtitle {
    color: rgba(0, 0, 0, 0.85);
} */

.page-header h1 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 800px;
    margin: 0 auto;
}

/* ===== Coverage Section ===== */
.coverage {
    padding: var(--spacing-xl) 0;
}

.coverage.coverage-tight {
    padding-top: var(--spacing-md);
}

.coverage h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-intro {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-medium);
    margin-bottom: var(--spacing-lg);
}

.coverage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.coverage-feature-row {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
    gap: var(--spacing-lg);
    align-items: stretch;
    margin-bottom: var(--spacing-md);
}

.coverage-feature-row > * {
    min-width: 0;
}

.coverage-media {
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);        
    padding: 0;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    max-width: 600px;
}

.coverage-media img {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 0;
    object-fit: cover;
}

.coverage-media .coverage-map-image {
    height: auto;
    object-fit: contain;
}

.coverage-media.coverage-media--auto {
    aspect-ratio: auto;
    height: auto;
    align-self: start;
}

.coverage-feature-row .coverage-card {
    height: 100%;
}

.coverage-card {
    background-color: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.coverage-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.country-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.35rem;
}

.country-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-medium);
}

.country-flag {
    width: 20px;
    height: 14px;
    border-radius: 2px;
    background-color: #e5e7eb;
    border: 1px solid #cfd4db;
    flex-shrink: 0;
}

.country-flag-img {
    width: clamp(14px, 4vw, 20px);
    height: clamp(10px, 3vw, 14px);
    border-radius: 2px;
    object-fit: cover;
    flex-shrink: 0;
}

.coverage-details h4 {
    margin: var(--spacing-sm) 0 var(--spacing-sm);
    color: var(--primary-color);
    font-size: 1.5rem;
}

.coverage-details p {
    margin: 0 0 var(--spacing-sm);
    color: var(--text-medium);
}

.coverage-list {
    list-style: none;
    margin-top: var(--spacing-sm);
}

.coverage-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-medium);
}

.coverage-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* ===== Pricing Section ===== */
.pricing {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

.pricing h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.pricing-feature {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.pricing-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.cta-box {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-lg);
}

/* ===== SDK Features Section ===== */
.sdk-features {
    padding: var(--spacing-xl) 0;
}

.sdk-features h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.data-services-layout {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(320px, 2fr);
    gap: var(--spacing-lg);
    align-items: start;
}

.data-services-rows {
    display: grid;
    gap: var(--spacing-lg);
}

.data-services-row {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.data-services-row--reverse {
    flex-direction: row-reverse;
}

.data-services-row .data-services-media {
    flex: 1;
}

.data-services-row .tech-card {
    flex: 2;
}

.data-services-row--wide .data-services-media {
    flex: 1.4;
}

.data-services-row--wide .tech-card {
    flex: 1.6;
}

.data-services-layout > * {
    min-width: 0;
}

.data-services-media {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background-color: var(--background-white);
}

.data-services-media img {
    width: 100%;
    height: auto;
    display: block;
}

.tech-card {
    background-color: #f1f5f9;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid #e2e8f0;
    box-shadow: 0 6px 14px rgba(15, 23, 42, 0.08);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.distribution-flow {
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    color: var(--text-dark);
    line-height: 1.5;
}

.distribution-model-section {
    padding: var(--spacing-lg) 0;       /* padding-bottom: 0; */
    background-color: transparent;
}

.distribution-model-section .content-block {
    margin: 0;
}

.distribution-model-tile--image {
    padding: 0;
    overflow: hidden;
}

.distribution-model-row {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(300px, 1fr);
    gap: var(--spacing-lg);
    align-items: start;
}

.distribution-model-row > * {
    min-width: 0;
}

.distribution-model-media {
    background-color: var(--background-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    width: 100%;
    height: auto;
}

.distribution-model-media--full {
    border: none;
    border-radius: 0;
    box-shadow: none;
}

.distribution-model-media--full img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

.distribution-model-media img {
    width: 100%;
    height: auto;
    display: block;
}

.distribution-model-content h3 {
    margin-top: 0;
}

.engage-tile {
    padding: var(--spacing-lg) 0 var(--spacing-xl);
}

.benefits-tile {
    padding: var(--spacing-lg) 0;
}

.scope-use-tile {
    padding: var(--spacing-lg) 0;
}

.hydrographic-benefits-row {
    padding: var(--spacing-lg) 0;
}

.hydrographic-benefits-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.tile-icon {
    margin-right: 0.35rem;
    font-size: 1.1em;
}

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

.hydrographic-intro .intro-text {
    margin-bottom: 0;
}

.hydrographic-wide {
    padding: var(--spacing-lg) 0 0;
}

.hydrographic-wide .content-block {
    margin: 0;
}

.hydrographic-split {
    padding: var(--spacing-lg);
}

.hydrographic-split-row {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.hydrographic-split-row > * {
    min-width: 0;
}

.hydrographic-split-media {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background-color: var(--background-white);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    align-self: start;
    width: 100%;
    max-width: 509px;
    height: auto;
}

.hydrographic-split-content {
    order: 0;
}

.hydrographic-split-media {
    order: 1;
}

.hydrographic-split-media img {
    width: 100%;
    height: auto;
    display: block;
}

.data-services-title {
    text-align: center;
}

.data-services-tiles .tech-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-sm);
}

.data-services-tiles .tech-card-header h3 {
    margin: 0;
}

.data-services-tiles .tech-icon {
    font-size: 1.5rem;
}

.tech-card ul {
    padding-left: 1.25rem;
    margin: var(--spacing-sm) 0 0;
}

.tech-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.12);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

/* ===== Code Sample Section ===== */
.code-sample {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

.code-sample h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.code-block {
    background-color: #1e1e1e;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    overflow-x: auto;
    box-shadow: var(--shadow-lg);
}

.code-block pre {
    margin: 0;
}

.code-block code {
    font-family: var(--font-mono);
    color: #d4d4d4;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ===== Developer CTA Section ===== */
.developer-cta {
    padding: var(--spacing-xl) 0;
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.cta-card {
    background-color: var(--background-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
}

.cta-card h3 {
    margin-bottom: var(--spacing-sm);
}

.cta-card .btn {
    margin-top: var(--spacing-sm);
}

.support-note {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
}

/* ===== Partners Section ===== */
.partners-content {
    padding: var(--spacing-xl) 0;
}

.partner-sections {
    display: grid;
    gap: var(--spacing-lg);
}

.partner-card {
    background-color: var(--background-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.partner-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.partner-intro {
    font-size: 1.125rem;
    color: var(--text-medium);
    margin-bottom: var(--spacing-md);
}

.partner-benefits h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.partner-benefits ul,
.integration-steps ol {
    margin-left: var(--spacing-md);
    color: var(--text-medium);
}

.partner-benefits li,
.integration-steps li {
    margin-bottom: var(--spacing-sm);
}

.partner-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.stat {
    text-align: center;
    padding: var(--spacing-sm);
    background-color: white;
    border-radius: var(--radius-md);
}

.stat h4 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat p {
    color: var(--text-medium);
    margin: 0;
}

.integration-steps {
    margin-top: var(--spacing-md);
}

.partnership-cta {
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: var(--radius-lg);
}

.partnership-cta h2 {
    color: white;
}

.partnership-cta p {
    color: rgba(255, 255, 255, 0.95);
}

/* ===== Trust Section ===== */
.trust-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

.trust-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.trust-item {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
}

/* ===== About Section ===== */
.about-section {
    padding: var(--spacing-xl) 0;
}

.about-layout {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) minmax(320px, 1.5fr);
    gap: var(--spacing-lg);
    align-items: center;
}

.about-media img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

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

.about-layout .about-content {
    max-width: none;
    margin: 0;
}

.legal-note {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: #fff3cd;
    border-left: 4px solid #ffc107;
    border-radius: var(--radius-md);
}

.legal-note h3 {
    color: #856404;
    margin-bottom: var(--spacing-sm);
}

.legal-note p {
    color: #856404;
    margin: 0;
}

.s100-summary {
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.s100-summary h3 {
    margin-top: 0;
}

.s100-product-list li {
    margin-bottom: var(--spacing-sm);
}

/* ===== Contact Section ===== */
.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

.contact-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-info-card {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.contact-info-card h3 {
    margin-bottom: var(--spacing-sm);
}

.contact-info-card a {
    font-weight: 500;
}

/* ===== Contact Form ===== */
.contact-form-container {
    max-width: 700px;
    margin: 0 auto;
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form-container h3 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 2000px;
    opacity: 1;
    transition: opacity 0.3s ease, max-height 0.3s ease, margin 0.3s ease;
}

.contact-form.is-hidden {
    opacity: 0;
    max-height: 0;
    margin: 0;
    overflow: hidden;
    pointer-events: none;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

.form-group textarea {
    resize: vertical;
}

.form-message {
    padding: 0;
    border-radius: var(--radius-md);
    text-align: center;
    white-space: pre-line;
    opacity: 0;
    max-height: 0;
    margin: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.3s ease, padding 0.3s ease, margin 0.3s ease;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    opacity: 1;
    max-height: 500px;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    opacity: 1;
    max-height: 500px;
}

.form-hint {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted, #6c757d);
    margin-top: 0.25rem;
}

/* Contact form: shorter dropdown and Country/Region on iPhone-sized screens */
@media (max-width: 430px) {
    .contact-form-container {
        max-width: 340px;
        margin-left: auto;
        margin-right: auto;
    }
    .contact-form-container .form-group select,
    .contact-form-container .form-group input[type="text"] {
        max-width: 100%;
        box-sizing: border-box;
    }
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

/* ===== Footer ===== */
footer {
    background-color: #1a1a1a;
    color: #ffffff;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

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

/* Desktop optimization for larger screens */
@media (min-width: 1400px) {
    .nav-menu {
        gap: var(--spacing-md);
    }
    
    .nav-menu a {
        font-size: 1rem;
        padding: 0.5rem 1rem;
    }
}

/* Navigation breakpoint for 7+ menu items */
@media (max-width: 1150px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        box-shadow: var(--shadow-md);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .nav-menu.active {
        max-height: 500px;
    }
    
    .nav-menu li {
        padding: 0.5rem 0;
    }
    
    .nav-menu a {
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 1024px) {
    .distribution-model-media,
    .hydrographic-split-media {
        width: 100%;
        height: auto;
    }

    .distribution-model-media img,
    .hydrographic-split-media img {
        height: auto;
        object-fit: contain;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    .hero {
        background-size: 100% auto;
        background-position: center top;
        background-attachment: scroll;
        padding: 0;
        min-height: auto;
    }
    
    .hero .container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .logo img {
        height: 80px;
    }
    
    .logo a {
        font-size: 1.1rem;
        gap: 0.4rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .feature-grid,
    .coverage-grid,
    .pricing-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .logo img {
        height: 60px;
    }
    
    .logo a {
        font-size: 1.05rem;
    }
    
    .hero {
        padding: 0;
        background-attachment: scroll;
        background-size: 100% auto;
        background-position: center top;
        min-height: auto;
        display: flex;
        align-items: center;
    }
    
    .hero .container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .page-header,
    .features,
    .pricing,
    .sdk-features,
    .partners-content,
    .about-section,
    .contact-section,
    .developer-content,
    .developer-faq {
        padding: var(--spacing-md) 0;
    }
}

/* ===== Developer Page Sections ===== */
.developer-content {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-white);
}

.page-toc {
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.page-toc h2 {
    margin-bottom: var(--spacing-sm);
}

.page-toc ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    column-gap: 6px;
    row-gap: 4px;
}

.page-toc a {
    color: var(--primary-color);
    font-weight: 600;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.content-media-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.content-media-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    align-items: start;
}

.developer-split-row {
    grid-template-columns: 1fr 1fr;
    align-items: center;
}

.content-media {
    background-color: var(--background-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
    padding: var(--spacing-sm);
}

.content-media h3 {
    margin: var(--spacing-xs) 0 var(--spacing-sm);
    text-align: center;
}

.content-media img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
    object-fit: contain;
    max-height: 600px;
}

.content-block {
    background-color: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-normal);
}

.content-block:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.content-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.content-header h2 {
    margin: 0;
}

.content-icon {
    font-size: 2rem;
}

.content-block h2 {
    margin-top: 0;
}

.content-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

.content-list {
    padding-left: 2.25rem;
    margin: var(--spacing-sm) 0 0;
    margin-top:0px
}

.content-steps {
    padding-left: 1.25rem;
    margin: var(--spacing-sm) 0 0;
}

.content-steps li {
    margin-bottom: var(--spacing-sm);
}

.content-steps h3 {
    margin: 0 0 var(--spacing-xs);
}

.note {
    margin-top: var(--spacing-md);
    font-weight: 600;
    color: var(--primary-color);
}

.developer-faq {

   
}

.developer-faq h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.faq-accordion {
    max-width: none;
    margin: 0;
    display: grid;
   
}

.faq-accordion .faq-item {
    background-color: var(--background-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.faq-trigger {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    font-size: 18px;
    font-weight: 400;
    line-height: 1.555;
    font-family: -apple-system, BlinkMacSystemFont, Roboto, Open Sans, Helvetica Neue, sans-serif;
    color: #000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}

.faq-tile h2 {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.faq-trigger::after {
    content: "+";
    font-size: 1.25rem;
    transition: transform 0.2s ease;
}

.faq-item.is-open .faq-trigger::after {
    content: "−";
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    padding: 0 var(--spacing-md);
}

.faq-answer p {
    margin: 0 0 var(--spacing-sm);
}

@media (max-width: 768px) {
    .page-toc ul {
        grid-template-columns: 1fr;
    }

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

    .developer-split-row {
        grid-template-columns: 1fr;
    }

    .feature-card--wide {
        grid-column: span 1;
    }

    .feature-card img {
        max-height: 320px;
        object-fit: contain;
    }

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

    .hydrographic-split-media {
        max-width: 100%;
    }

    .hydrographic-split-media img {
        max-height: 320px;
        object-fit: contain;
    }


    .content-media img {
        max-height: 320px;
    }

    .coverage-feature-row {
        grid-template-columns: 1fr;
    }

    .coverage-media {
        max-width: 100%;
        width: 100%;
    }

    .data-services-layout {
        grid-template-columns: 1fr;
    }

    .data-services-row {
        flex-direction: column;
        align-items: stretch;
    }

    .data-services-row--reverse {
        flex-direction: column;
    }

    .distribution-model-row {
        grid-template-columns: 1fr;
    }

    .hydrographic-split-row {
        grid-template-columns: 1fr;
    }

    .hydrographic-benefits-grid {
        grid-template-columns: 1fr;
    }

    .distribution-model-media,
    .hydrographic-split-media {
        width: 100%;
        height: auto;
    }

    .distribution-model-media img,
    .hydrographic-split-media img {
        height: auto;
        object-fit: contain;
    }
}

/* ===== Boaters Page Sections ===== */
.boaters-intro {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-white);
}

.boaters-benefits {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

.coverage-highlight {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-white);
}

.boaters-faq {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-light);
}

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

.faq-item {
    background-color: white;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    margin: 0;
}

.safety-note {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-white);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}