/* Minimal, Elegant Design System */
:root {
    /* Refined Color Palette */
    --black: #0a0a0a;
    --white: #fefefe;
    --gray-900: #1c1c1e;
    --gray-800: #2c2c2e;
    --gray-700: #3a3a3c;
    --gray-600: #48484a;
    --gray-500: #8e8e93;
    --gray-400: #c7c7cc;
    --gray-300: #d1d1d6;
    --gray-200: #e5e5ea;
    --gray-100: #f2f2f7;
    --gray-50: #fafafa;
    
    /* Semantic Colors */
    --text-primary: var(--black);
    --text-secondary: var(--gray-700);
    --text-tertiary: var(--gray-500);
    --text-quaternary: var(--gray-400);
    
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    
    --border-primary: var(--gray-200);
    --border-secondary: var(--gray-300);
    
    /* Refined Spacing System */
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3.5rem;
    --spacing-4xl: 5rem;
    --spacing-5xl: 7rem;
    
    /* Layout */
    --container-width: 1200px;
    --border-radius: 40px;
    --border-radius-md: 16px;
    --border-radius-sm: 12px;
    --border-radius-xs: 8px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    line-height: 1.7;
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: -0.01em;
}

/* Refined Typography Scale */
h1 {
    font-size: clamp(2.75rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

h2 {
    font-size: clamp(2.25rem, 4.5vw, 3rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.section-subtitle {
    font-size: 1.375rem;
    color: var(--text-tertiary);
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--spacing-4xl);
    font-weight: 400;
    line-height: 1.6;
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

/* Minimal Navigation */
.nav {
    position: sticky;
    top: 0;
    background: rgba(254, 254, 254, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 100;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0.6rem var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 20px;
    width: auto;
    filter: contrast(1.1);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text-primary);
    transition: width 0.3s ease;
}

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

.nav-cta {
    background: var(--black) !important;
    color: var(--white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-cta::after {
    display: none;
}

/* Elegant Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-2xl);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    min-width: 180px;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    background: var(--gray-900);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* Minimal Hero Section */
.hero {
    padding: var(--spacing-5xl) 0 var(--spacing-4xl);
    background: var(--bg-primary);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, var(--gray-50) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-5xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 560px;
}

.hero-subtitle {
    font-size: 1.375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    font-weight: 400;
    line-height: 1.7;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.feature-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.feature-badge:hover {
    border-color: var(--border-secondary);
    transform: translateY(-1px);
}

.feature-badge i {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.hero-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-primary);
    color: var(--text-quaternary);
    font-size: 0.875rem;
    font-weight: 500;
}

.hero-note i {
    color: var(--text-quaternary);
    font-size: 0.875rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-container {
    position: relative;
}

.hero-phone {
    max-width: 320px;
    height: auto;
    filter: drop-shadow(var(--shadow-xl));
    transition: all 0.3s ease;
}

.hero-phone:hover {
    transform: translateY(-8px);
}

/* Device Mockup */
.device-mockup {
    position: relative;
    width: 280px;
    height: 580px;
    background: #1c1c1e;
    border-radius: 40px;
    padding: 20px;
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
}

.device-mockup:hover {
    transform: translateY(-8px);
}

.device-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 30px;
    position: relative;
    overflow: hidden;
}

.device-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 50%, rgba(255,255,255,0.1) 100%);
    animation: shimmer 3s infinite;
}

.device-screen::after {
    content: 'Roamio';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 2rem;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.device-notch {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #000;
    border-radius: 15px;
    z-index: 10;
}

.device-home-indicator {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 4px;
    background: rgba(255,255,255,0.3);
    border-radius: 2px;
    z-index: 10;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Minimal Problem Section */
.problem-section {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.problem-item {
    background: var(--bg-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-primary);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.problem-item:hover {
    border-color: var(--border-secondary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.problem-icon {
    margin-bottom: var(--spacing-xl);
}

.problem-icon i {
    font-size: 2.5rem;
    color: var(--text-quaternary);
    transition: color 0.3s ease;
}

.problem-item:hover .problem-icon i {
    color: var(--text-tertiary);
}

.problem-item h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.375rem;
}

.problem-item p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 0;
    line-height: 1.7;
}

/* Elegant Solution Section */
.solution-section {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-primary);
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.solution-item {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-2xl);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.solution-item:hover {
    border-color: var(--border-secondary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.solution-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.solution-item:hover .solution-icon {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
}

.solution-icon i {
    font-size: 1.5rem;
    color: var(--text-tertiary);
    transition: color 0.3s ease;
}

.solution-item:hover .solution-icon i {
    color: var(--text-secondary);
}

.solution-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.375rem;
}

.solution-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 0;
    line-height: 1.7;
}

/* Minimal How It Works */
.how-it-works {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-secondary);
}

.steps {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4xl);
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 24px;
    right: -50%;
    width: 100%;
    height: 1px;
    background: var(--border-primary);
    z-index: 1;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto var(--spacing-xl);
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.step-number:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.step-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 1.375rem;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 0;
    line-height: 1.7;
}

/* Elegant Testimonials */
.testimonials {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-primary);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
}

.testimonial {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-primary);
    transition: all 0.3s ease;
    position: relative;
}

.testimonial:hover {
    border-color: var(--border-secondary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.testimonial::before {
    content: '"';
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    font-size: 3rem;
    color: var(--text-quaternary);
    font-family: serif;
    line-height: 1;
}

.testimonial-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    padding-left: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author strong {
    color: var(--text-primary);
    font-weight: 600;
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.testimonial-author span {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Minimal Privacy Section */
.privacy-section {
    padding: var(--spacing-5xl) 0;
    background: var(--bg-secondary);
}

.privacy-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.privacy-header {
    margin-bottom: var(--spacing-4xl);
}

.privacy-header p {
    font-size: 1.375rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.6;
}

.privacy-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
}

.privacy-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    text-align: left;
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-primary);
    transition: all 0.3s ease;
}

.privacy-feature:hover {
    border-color: var(--border-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.privacy-feature i {
    font-size: 1.75rem;
    color: var(--text-quaternary);
    margin-top: var(--spacing-sm);
    flex-shrink: 0;
    transition: color 0.3s ease;
}

.privacy-feature:hover i {
    color: var(--text-tertiary);
}

.privacy-feature h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.privacy-feature p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 0;
    line-height: 1.7;
}

/* Elegant Waitlist Section */
.waitlist-section {
    padding: var(--spacing-5xl) 0;
    text-align: center;
    background: var(--bg-primary);
}

.waitlist-content {
    max-width: 720px;
    margin: 0 auto;
}

.waitlist-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    font-size: 1.25rem;
    line-height: 1.6;
}

.waitlist-steps {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.waitlist-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.waitlist-step:hover {
    border-color: var(--border-secondary);
    transform: translateY(-1px);
}

.waitlist-step i {
    color: var(--text-tertiary);
    font-size: 1rem;
}

/* Improved Email Form */
.waitlist-form {
    background: var(--bg-secondary);
    padding: var(--spacing-3xl);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-primary);
    margin-bottom: var(--spacing-3xl);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.input-container {
    position: relative;
    display: flex;
    gap: var(--spacing-md);
    max-width: 500px;
    margin: 0 auto;
}

.email-input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--border-primary);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
    outline: none;
}

.email-input:focus {
    border-color: var(--black);
    box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.1);
}

.email-input::placeholder {
    color: var(--text-tertiary);
    font-weight: 400;
}

.submit-btn {
    background: var(--black);
    color: var(--white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

.submit-btn:hover {
    background: var(--gray-900);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-icon {
    font-size: 0.875rem;
    transition: transform 0.3s ease;
}

.submit-btn:hover .btn-icon {
    transform: translateX(2px);
}

.form-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-quaternary);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-note i {
    color: var(--text-quaternary);
    font-size: 0.875rem;
}

/* Success Message */
.success-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border: 2px solid var(--border-primary);
    border-radius: var(--border-radius-md);
    text-align: left;
}

.success-icon i {
    font-size: 2rem;
    color: #10b981;
}

.success-text h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.125rem;
}

.success-text p {
    color: var(--text-secondary);
    margin-bottom: 0;
    font-size: 0.875rem;
}

/* Waitlist Benefits */
.waitlist-benefits {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    border-color: var(--border-secondary);
    transform: translateY(-1px);
}

.benefit-item i {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Minimal Footer */
.footer {
    background: var(--black);
    color: var(--white);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--border-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    flex: 1;
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.footer-brand p {
    color: var(--text-quaternary);
    font-size: 1.125rem;
    margin-bottom: 0;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: var(--spacing-4xl);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-column h4 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

.footer-column a {
    color: var(--text-quaternary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.footer-column a:hover {
    color: var(--white);
    transform: translateX(4px);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-quaternary);
    font-size: 0.875rem;
    margin-bottom: 0;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-4xl);
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .device-mockup {
        width: 240px;
        height: 500px;
        padding: 16px;
    }
    
    .device-screen::after {
        font-size: 1.5rem;
    }
    
    .steps {
        flex-direction: column;
        gap: var(--spacing-2xl);
        max-width: 500px;
    }
    
    .step:not(:last-child)::after {
        display: none;
    }
    
    .waitlist-steps {
        gap: var(--spacing-lg);
    }
    
    .input-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .submit-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
        --spacing-4xl: 3rem;
        --spacing-5xl: 4rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .nav-container {
        padding: 0.5rem var(--spacing-lg);
    }
    
    .hero {
        padding: var(--spacing-4xl) 0 var(--spacing-3xl);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-lg);
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 320px;
    }
    
    .hero-features {
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .feature-badge {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .solution-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .solution-icon {
        margin: 0 auto;
    }
    
    .privacy-feature {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .privacy-feature i {
        margin: 0 auto;
    }
    
    .waitlist-steps {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .waitlist-step {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .waitlist-form {
        padding: var(--spacing-xl);
    }
    
    .waitlist-benefits {
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-container {
        padding: 0.4rem var(--spacing-md);
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .device-mockup {
        width: 200px;
        height: 420px;
        padding: 12px;
    }
    
    .device-screen::after {
        font-size: 1.25rem;
    }
    
    .device-notch {
        width: 100px;
        height: 20px;
        top: 12px;
    }
    
    .device-home-indicator {
        width: 120px;
        height: 3px;
        bottom: 12px;
    }
    
    .feature-badge {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .problem-item,
    .solution-item,
    .testimonial,
    .privacy-feature {
        padding: var(--spacing-lg);
    }
    
    .solution-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .steps {
        gap: var(--spacing-xl);
    }
}