/* CSS Custom Properties for Theme Switching */
:root {
    /* Light Theme Variables */
    --bg-color: #ffffff;
    --text-color: #003366;
    --text-secondary: #4a5568;
    --text-muted: #64748b;
    --primary-color: #00c2cb;
    --primary-hover: #00a8b0;
    --secondary-color: #003366;
    --accent-color: #008080;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.2);
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --navbar-border: #e2e8f0;
    --section-bg: #ffffff;
    --section-alt-bg: #f8f9fa;
    --code-bg: #1e293b;
    --code-text: #e2e8f0;
    --code-content: #e2e8f0;
    --code-keyword: #60a5fa;
    --code-string: #34d399;
    --code-comment: #64748b;
    --code-error: #ef4444;
    --dot-red: #ef4444;
    --dot-yellow: #eab308;
    --dot-green: #22c55e;
    --newsletter-bg: #f8f9fa;
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-color: #0a0e1a;
    --text-color: #ffffff;
    --text-secondary: #b0b8c8;
    --text-muted: #94a3b8;
    --primary-color: #00d4ff;
    --primary-hover: #00b8d9;
    --secondary-color: #0066ff;
    --accent-color: #008080;
    --card-bg: #111625;
    --card-border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.5);
    --navbar-bg: rgba(10, 14, 26, 0.95);
    --navbar-border: #1f2937;
    --section-bg: #0a0e1a;
    --section-alt-bg: #0f172a;
    --code-bg: #0f172a;
    --code-text: #e2e8f0;
    --code-content: #e2e8f0;
    --code-keyword: #60a5fa;
    --code-string: #34d399;
    --code-comment: #64748b;
    --code-error: #ef4444;
    --dot-red: #ff4d4d;
    --dot-yellow: #ff8533;
    --dot-green: #27c93f;
    --newsletter-bg: #0f172a;
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: all 0.3s ease;
}

/* Theme transition classes */
.theme-transition {
    transition: all 0.3s ease !important;
}

.theme-transition-ready * {
    transition: all 0.3s ease;
}

.resize-animation-stopper * {
    animation: none !important;
    transition: none !important;
}

@keyframes resize-stopper {
    from { opacity: 1; }
    to { opacity: 1; }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-color);
}

h1 {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 2.5rem;
    color: var(--text-color);
}

h3 {
    font-size: 1.5rem;
    color: var(--text-color);
}

h4 {
    font-size: 1.25rem;
    color: var(--text-color);
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
    background-color: var(--section-bg);
}

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

/* Theme Switcher */
.theme-switcher {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
}

/* Mobile Theme Switcher */
@media (max-width: 768px) {
    .theme-switcher {
        top: 1rem;
        right: 1rem;
        z-index: 1000;
    }
}

/* Extra small mobile devices */
@media (max-width: 480px) {
    .theme-switcher {
        top: 1rem;
        right: 0.75rem;
        z-index: 1000;
    }
}

.theme-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 6px var(--shadow);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.theme-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-hover);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--navbar-bg);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--navbar-border);
    transition: all 0.3s ease;
}

/* Dynamic Logo Behavior */
.navbar-logo {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.navbar-logo.visible {
    opacity: 1;
    visibility: visible;
}

/* Ensure navbar logo is hidden by default */
.navbar-logo:not(.visible) {
    opacity: 0;
    visibility: hidden;
}

/* Hero section logo visibility control */
.hero-logo {
    transition: opacity 0.4s ease;
}

.hero-logo.hidden {
    opacity: 0;
}

/* Mobile-specific logo behavior */
@media (max-width: 768px) {
    .navbar-logo {
        opacity: 0;
        visibility: hidden;
    }
    
    .navbar-logo.visible {
        opacity: 1;
        visibility: visible;
    }
    
    .hero-logo {
        transition: opacity 0.4s ease;
    }
    
    .hero-logo.hidden {
        opacity: 0;
    }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.logo-text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 1px;
    color: var(--text-color);
    /*text-transform: uppercase;*/
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-color);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    transition: color 0.3s ease;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: var(--bg-color);
    overflow: hidden;
}

.hero-content {
    text-align: center;
    z-index: 10;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-logo {
    margin-bottom: 2rem;
}

.hero-logo-img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.eyebrow {
    display: inline-block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.highlight {
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-underline {
    width: 100px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 2rem auto;
    border-radius: 2px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 194, 203, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    display: inline-block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px var(--shadow);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--shadow-hover);
    border-color: var(--primary-color);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Code Examples */
.code-example {
    background-color: var(--code-bg);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 3rem;
    box-shadow: 0 8px 25px var(--shadow);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.code-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background-color: var(--dot-red); }
.dot.yellow { background-color: var(--dot-yellow); }
.dot.green { background-color: var(--dot-green); }

.code-title {
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    color: var(--code-text);
    font-weight: 500;
}

.code-content {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    padding: 1.5rem;
    overflow-x: auto;
}

.code-content pre {
    color: var(--code-content);
    margin: 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.keyword { color: var(--code-keyword); font-weight: bold; }
.string { color: var(--code-string); }
.comment { color: var(--code-comment); font-style: italic; }
.error { color: var(--code-error); font-weight: bold; }

.code-warning {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--code-error);
    border-radius: 0 8px 8px 0;
    color: var(--code-error);
    font-size: 0.875rem;
}

/* Grids for Vision, Architecture, Safety, Platform */
.vision-grid,
.architecture-grid,
.safety-grid,
.platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.vision-item,
.arch-item,
.safety-item,
.platform-item {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px var(--shadow);
}

.vision-item:hover,
.arch-item:hover,
.safety-item:hover,
.platform-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px var(--shadow-hover);
    border-color: var(--primary-color);
}

.vision-icon,
.arch-icon,
.safety-icon,
.platform-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.platform-item ul {
    list-style: none;
    margin-top: 1rem;
}

.platform-item li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--card-border);
    color: var(--text-secondary);
}

.platform-item li:last-child {
    border-bottom: none;
}

/* Scenario Section */
.scenario-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.scenario-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    background-color: var(--primary-color);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.step-content h4 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.step-content p {
    color: var(--text-secondary);
    margin: 0;
}

.sample-code {
    background-color: var(--code-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 8px 25px var(--shadow);
}

/* Gateway Section */
.gateway-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.gateway-text p {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.gateway-text ul {
    list-style: none;
}

.gateway-text li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.gateway-text i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.diagram-box {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 6px var(--shadow);
}

.diagram-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.125rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.diagram-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.diagram-item {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.diagram-arrow {
    color: var(--text-muted);
    font-size: 1.5rem;
    font-weight: bold;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-info p {
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--card-border);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.contact-item h4 {
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 4px 6px var(--shadow);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 194, 203, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

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

.form-message.success {
    background-color: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    border: 1px solid rgba(34, 197, 94, 0.3);
    display: block;
}

.form-message.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.3);
    display: block;
}

/* Newsletter Section */
.newsletter {
    background-color: var(--newsletter-bg);
    padding: 4rem 0;
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

.newsletter-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.newsletter-text h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.newsletter-text p {
    color: var(--text-secondary);
}

.newsletter-form {
    display: flex;
    gap: 1rem;
}

.newsletter-form .form-group {
    flex: 1;
    margin-bottom: 0;
}

.newsletter-form input {
    width: 74%;
    padding: 1rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 194, 203, 0.1);
}

/* Footer */
.footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--card-border);
}

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

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo-img {
    width: 70px;
    height: 70px;
    object-fit: contain;
}

.footer-logo p {
    color: var(--footer-text);
    font-size: 0.875rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--footer-text);
    transition: color 0.3s ease;
}

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

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.footer-social a {
    color: var(--footer-text);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* Background Elements */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 194, 203, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 194, 203, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
}

.circuit-pattern {
    position: absolute;
    top: 0;
    right: 0;
    width: 600px;
    height: 720px;
    opacity: 0.1;
    pointer-events: none;
}

.tech-element {
    position: absolute;
    top: 200px;
    right: 100px;
    width: 300px;
    height: 300px;
    border: 1px solid rgba(0, 194, 203, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.tech-element::before {
    content: '';
    position: absolute;
    width: 220px;
    height: 220px;
    border: 1px solid rgba(0, 194, 203, 0.3);
    border-radius: 50%;
}

.tech-element::after {
    content: '';
    position: absolute;
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(0,194,203,0.2) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
}

.tech-element i {
    font-family: 'Courier New', monospace;
    color: var(--primary-color);
    font-size: 24px;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        justify-content: space-between;
        position: relative;
    }
    
    .nav-logo {
        position: relative;
        left: 40pt;
        transform: none;
        z-index: 1000; /*hamburger menu list has z-index:9999 */
    }
    
    .hamburger {
        display: flex;
        position: absolute;
        left: 2rem;
        top: 50%;
        transform: translateY(-50%);
        z-index: 10;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--navbar-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        border-top: 1px solid var(--navbar-border);
        padding: 2rem 0;
        backdrop-filter: blur(10px);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 1rem 0;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

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

    .hero-logo-img {
        width: 150px;
        height: 150px;
    }

    .section {
        padding: 4rem 0;
    }

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

    .scenario-content,
    .gateway-content,
    .contact-grid,
    .newsletter-content,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form button {
        width: 75%;
        margin-top: 2rem;
    }

    .theme-switcher {
        top: 1rem;
        right: 1rem;
    }
}

/* Scroll Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background-color: var(--primary-color);
    z-index: 1000;
    transition: width 0.1s ease-out;
}

/* Active link highlighting */
.nav-link.active {
    color: var(--primary-color);
}

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