/* ============================================
   TexCalc Landing Page Styles
   Modern, Sleek, Futuristic Design
   ============================================ */

/* CSS Variables - Matching App Theme */
:root {
    /* Colors - From app base.css */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-secondary: #6366f1;
    --color-accent: #06b6d4;
    
    /* Text Colors - From app */
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;
    
    /* Background Colors - From app */
    --color-bg: #ffffff;
    --color-bg-secondary: #eaeef3;
    --color-bg-medium: #f4f6f9;
    --color-bg-dark: #0f172a;
    --color-bg-dark-secondary: #253244;
    --color-bg-dark-medium: #1e293b;
    
    /* Border Colors - From app */
    --color-border: #d1d7df;
    --color-border-dark: #334155;
    
    /* Status Colors - From app */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius - Subtle for modern design */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows - Subtle for depth */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border widths for minimal design */
    --border-width: 1px;
    
    /* Texture patterns - removed gradients for Chrome compatibility */
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.65;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: -0.011em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    position: relative;
}

main {
    position: relative;
    z-index: 1;
}

/* Typography - Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: 2rem;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 1.75rem;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.5rem;
    letter-spacing: -0.018em;
}

h4 {
    font-size: 1.25rem;
    letter-spacing: -0.015em;
}

h5 {
    font-size: 1.125rem;
    letter-spacing: -0.015em;
}

h6 {
    font-size: 1rem;
    letter-spacing: -0.01em;
}

p {
    font-family: var(--font-primary);
    line-height: 1.7;
    letter-spacing: -0.011em;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: 0.75rem 0;
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-menu {
    display: none;
    align-items: center;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    font-family: var(--font-primary);
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--color-primary);
    transition: none;
}

.nav-link:hover::after {
    width: 80%;
}

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

.nav-link.active::after {
    width: 80%;
}

/* Knowledge Base link - dark green color */
.nav-link.nav-link-green {
    color: #166534;
    font-weight: 700;
}

.nav-link.nav-link-green::after {
    background: #166534;
}

.nav-link.active.nav-link-green,
.nav-link.nav-link-green.active {
    color: #166534;
}

.nav-link.active.nav-link-green::after,
.nav-link.nav-link-green.active::after {
    background: #166534;
    width: 80%;
}

.nav-link.nav-link-green:hover {
    color: #166534;
}

.nav-link.nav-link-green:hover::after {
    background: #166534;
    width: 80%;
}

.mobile-nav-link.active {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

/* Knowledge Base link in mobile menu - dark green color */
.mobile-nav-link.nav-link-green {
    color: #166534;
}

.mobile-nav-link.active.nav-link-green,
.mobile-nav-link.nav-link-green.active {
    color: #166534;
    background: var(--color-bg-secondary);
}

.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle:hover {
    background: var(--color-bg-secondary);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: var(--spacing-md);
    padding-top: 0;
    background: var(--color-bg);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 999;
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
    box-shadow: 0 12px 18px rgba(0, 0, 0, 0.2);
}

.mobile-menu.show {
    display: flex;
}

.mobile-nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.mobile-nav-link:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
    transition: none;
}

.mobile-nav-cta {
    margin-top: var(--spacing-xs);
    background: var(--color-primary);
    color: white;
    text-align: center;
    border: var(--border-width) solid var(--color-primary);
}

.mobile-nav-cta:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
    text-decoration: none;
    color: inherit;
}

.nav-brand:hover {
    text-decoration: none;
    color: inherit;
}

.nav-brand:visited {
    color: inherit;
}

.nav-brand:focus {
    outline: none;
    text-decoration: none;
}

.nav-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    opacity: 0;
    transition: var(--transition-fast);
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.brand-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition-fast);
}

/* Navbar icons - always show dark icon on light navbar background */
.icon-light {
    display: none;
}

.icon-dark {
    display: block;
}


.brand-name {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: -0.025em;
    line-height: 1.1;
    display: flex;
    align-items: baseline;
    position: relative;
    z-index: 1;
}

.app-name-tex {
    font-weight: 400;
    color: #222;
}

.app-name-calc {
    font-weight: 700;
    color: #222;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--color-primary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition-base);
    border: var(--border-width) solid var(--color-primary);
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    transition: var(--transition-base);
    z-index: -1;
}

.nav-cta:hover {
    color: white;
}

.nav-cta:hover::before {
    left: 0;
}

/* Hero Section */
.hero {
    padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-xl);
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    position: relative;
    z-index: 2;
}

@media (min-width: 768px) {
    .hero .container {
        gap: var(--spacing-xl);
    }
}

@media (min-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
}

.hero-content {
    text-align: center;
    position: relative;
}

@media (min-width: 1024px) {
    .hero-content {
        text-align: left;
    }
}

.hero-title {
    font-family: var(--font-primary);
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.025em;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
        margin-bottom: var(--spacing-sm);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 2.75rem;
    }
}

.gradient-text {
    color: var(--color-primary);
    position: relative;
}

.hero-subtitle {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    letter-spacing: -0.01em;
}

@media (min-width: 768px) {
    .hero-subtitle {
        margin-bottom: var(--spacing-md);
    }
}

@media (min-width: 1024px) {
    .hero-subtitle {
        margin-left: 0;
        margin-right: 0;
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .hero-cta {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-xl);
    }
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero-cta {
        justify-content: flex-start;
    }
}

.btn {
    font-family: var(--font-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    outline: none;
}

.btn-primary {
    background: transparent;
    color: var(--color-primary);
    border: var(--border-width) solid var(--color-primary);
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-sm);
}

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

.btn-submit::before {
    background: var(--color-primary-dark);
}

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

.btn-submit:hover::before {
    left: 0;
    background: var(--color-primary-dark);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    transition: var(--transition-base);
    z-index: 0;
}

.btn-primary > * {
    position: relative;
    z-index: 1;
}

.btn-primary:hover {
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:hover::before {
    left: 0;
    z-index: 0;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: var(--border-width) solid var(--color-border);
    border-radius: var(--radius-sm);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-bg-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-large {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

@media (min-width: 1024px) {
    .hero-stats {
        justify-content: flex-start;
    }
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.125rem;
    position: relative;
    padding: var(--spacing-xs);
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 0;
    background: var(--color-primary);
    transition: var(--transition-base);
    opacity: 0.3;
}

.stat-item:hover::before {
    height: 100%;
}

.stat-number {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.stat-label {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.hero-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

/* Features Section */
.features {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-dark);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-primary);
    opacity: 0.3;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--color-primary);
    opacity: 0.5;
}

.section-title {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 1.75rem;
    }
}

.section-subtitle {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
}

.about-section-landing .section-title {
    color: #ffffff;
}

.about-section-landing .section-subtitle {
    color: #94a3b8;
}

.features .section-subtitle,
.contact-section-landing .section-subtitle {
    color: #94a3b8;
}

.section-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.section-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.section-stat-number {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-stat-label {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
    line-height: 1.3;
}

@media (min-width: 768px) {
    .section-stats {
        gap: var(--spacing-2xl);
    }
    
    .section-stat-number {
        font-size: 1.75rem;
    }
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
    max-width: 800px;
    margin: 0 auto;
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    align-items: stretch;
    padding: 0;
    border-radius: 0;
    position: relative;
    border: none;
    transition: var(--transition-base);
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--color-primary);
    opacity: 0;
    transition: var(--transition-base);
}


/* Checkerboard pattern - alternating colors */
.feature-item:nth-child(4n+1) .feature-content,
.feature-item:nth-child(4n+4) .feature-content {
    background: var(--color-bg-dark-secondary);
}

.feature-item:nth-child(4n+2) .feature-content,
.feature-item:nth-child(4n+3) .feature-content {
    background: var(--color-bg-dark-medium);
}

.feature-item:nth-child(4n+1) .feature-image,
.feature-item:nth-child(4n+4) .feature-image {
    background: var(--color-bg-dark-secondary);
}

.feature-item:nth-child(4n+2) .feature-image,
.feature-item:nth-child(4n+3) .feature-image {
    background: var(--color-bg-dark-medium);
}

/* On mobile, simpler alternating */
@media (max-width: 767px) {
    .feature-item:nth-child(odd) .feature-content {
        background: var(--color-bg-dark-secondary);
    }
    
    .feature-item:nth-child(even) .feature-content {
        background: var(--color-bg-dark-medium);
    }
    
    .feature-item:nth-child(odd) .feature-image {
        background: var(--color-bg-dark-secondary);
    }
    
    .feature-item:nth-child(even) .feature-image {
        background: var(--color-bg-dark-medium);
    }
    
    /* Ensure content appears above image on mobile */
    .feature-content {
        order: 1;
    }
    
    .feature-image {
        order: 2;
    }
}

@media (min-width: 768px) {
    .feature-item {
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }
    
    .feature-item-left {
        grid-template-columns: 1fr 1fr;
    }
    
    .feature-item-right {
        grid-template-columns: 1fr 1fr;
    }
    
    /* Reset order for desktop - left items: content first, image second */
    .feature-item-left .feature-content {
        order: 1;
    }
    
    .feature-item-left .feature-image {
        order: 2;
    }
    
    /* Right items: image first, content second (zig-zag pattern) */
    .feature-item-right .feature-image {
        order: 1;
    }
    
    .feature-item-right .feature-content {
        order: 2;
    }
}

.feature-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl);
}

.feature-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-dark-secondary);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
    flex-shrink: 0;
    margin-bottom: var(--spacing-xs);
    position: relative;
    border: 1px solid var(--color-primary);
    transition: var(--transition-base);
}


.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: #ffffff;
    letter-spacing: -0.015em;
    line-height: 1.4;
}

.feature-description {
    font-family: var(--font-primary);
    color: #b8c5d1;
    line-height: 1.7;
    font-size: 0.9375rem;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.feature-image {
    border-radius: 0;
    overflow: hidden;
    border: none;
    position: relative;
    transition: var(--transition-base);
    padding: 0;
    width: 100%;
    height: 100%;
}

.feature-image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-medium);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-primary);
    opacity: 0.2;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-family: var(--font-primary);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.025em;
    line-height: 1.3;
    color: var(--color-text);
}

@media (min-width: 768px) {
    .cta-title {
        font-size: 2rem;
    }
}

.cta-subtitle {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

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

.cta-section .btn-primary::before {
    background: var(--color-primary);
}

.cta-section .btn-primary:hover {
    color: white;
}

.cta-section .btn-primary:hover::before {
    left: 0;
}

/* About Section */
.about-section-landing {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-dark);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.about-section-landing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-primary);
    opacity: 0.3;
}

@media (min-width: 768px) {
    .about-section-landing {
        padding: var(--spacing-2xl) 0;
    }
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-description {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: #e2e8f0;
    line-height: 1.75;
    margin-bottom: 0;
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    letter-spacing: -0.011em;
}

@media (min-width: 768px) {
    .about-description {
        font-size: 1.0625rem;
    }
}

/* How to Use & Install Section */
.how-to-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-medium);
    position: relative;
    overflow: hidden;
}

.how-to-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-secondary);
    opacity: 0.15;
}

@media (min-width: 768px) {
    .how-to-section {
        padding: var(--spacing-2xl) 0;
    }
}

.how-to-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    max-width: 100%;
    margin: 0;
}

@media (min-width: 768px) {
    .how-to-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

.how-to-column {
    padding: var(--spacing-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.how-to-column::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--color-primary);
    transition: var(--transition-base);
}

.how-to-column:hover::before {
    height: 100%;
}

@media (min-width: 768px) {
    .how-to-column {
        padding: var(--spacing-xl);
    }
}

.how-to-column-left {
    background: var(--color-bg-secondary);
}

.how-to-column-right {
    background: var(--color-bg);
}

@media (min-width: 768px) {
    .how-to-column-left {
        background: var(--color-bg-secondary);
    }
    
    .how-to-column-right {
        background: var(--color-bg);
    }
}

.how-to-column-title {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.018em;
    line-height: 1.4;
}

@media (min-width: 768px) {
    .how-to-column-title {
        font-size: 1.25rem;
        margin-bottom: var(--spacing-sm);
    }
}

.how-to-column-text {
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text-light);
    line-height: 1.7;
    margin: 0;
    letter-spacing: -0.01em;
}

@media (min-width: 768px) {
    .how-to-column-text {
        font-size: 0.9375rem;
    }
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }
}

.about-stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.about-stat-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0;
    background: var(--color-primary);
    transition: var(--transition-base);
    opacity: 0.3;
}

@media (min-width: 768px) {
    .about-stat-item {
        padding: var(--spacing-xl);
        min-height: 140px;
    }
}

.about-stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-primary);
    opacity: 0;
    transition: var(--transition-base);
}

.about-stat-item:hover::before {
    opacity: 1;
}

.about-stat-item:hover::after {
    height: 3px;
    background: var(--color-primary);
}

.about-stat-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.about-stat-item .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .about-stat-item .stat-number {
        font-size: 2.5rem;
    }
}

.about-stat-item .stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-top: var(--spacing-xs);
}

/* Contact Section */
.contact-section-landing {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-dark-medium);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.contact-section-landing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-primary);
    opacity: 0.3;
}

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

.contact-info {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.contact-description {
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 400;
    color: #b8c5d1;
    line-height: 1.7;
    letter-spacing: -0.01em;
}

.contact-description a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

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

.landing-contact-form {
    background: var(--color-bg-dark-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-dark);
    position: relative;
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.form-group label {
    font-family: var(--font-primary);
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 0.875rem;
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    font-weight: 400;
    letter-spacing: -0.01em;
    color: #ffffff;
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: var(--color-bg-dark-medium);
    color: #ffffff;
    border-color: var(--color-primary);
}

.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled,
.landing-contact-form button:disabled,
.landing-contact-form button.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Disabled submit button - muted grey */
.landing-contact-form button[type="submit"]:disabled,
.landing-contact-form button[type="submit"].disabled {
    background: #6b7280 !important;
    border-color: #6b7280 !important;
    color: #9ca3af !important;
    opacity: 1;
    cursor: not-allowed;
    pointer-events: none;
}

.landing-contact-form button[type="submit"]:disabled::before,
.landing-contact-form button[type="submit"].disabled::before {
    display: none;
}

.landing-contact-form button[type="submit"]:disabled:hover,
.landing-contact-form button[type="submit"].disabled:hover {
    transform: none;
    box-shadow: none;
    color: #9ca3af !important;
}


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

.contact-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    display: none;
}

.contact-result.show {
    display: block;
}

.contact-result.success {
    background: #064e3b;
    color: #b4f8df;
    border: 1px solid var(--color-success);
}

.contact-result.error {
    background: #7f1d1d;
    color: #ffd4d4;
    border: 1px solid #ef4444;
}

/* Color Checkbox Captcha Styles */
#captcha-question-label {
    margin-bottom: var(--spacing-sm);
    display: block;
}

.color-captcha-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 0.75rem;
    margin-top: 0;
    padding: var(--spacing-sm);
    background: var(--color-bg-dark-medium);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 100%;
    box-sizing: border-box;
}

.color-captcha-checkbox-wrapper {
    position: relative;
    aspect-ratio: 1;
    min-width: 0;
    max-width: 100%;
}

.color-captcha-checkbox {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
}

.color-captcha-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-width: 0;
    max-width: 100%;
    background: var(--color-bg-dark);
    border: 2px solid #6b7280;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
    margin: 0px !important;
}

.captcha-shape-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    transition: all 0.2s ease;
}

.captcha-shape-icon svg {
    display: block;
}

.color-captcha-label:hover {
    border-color: #9ca3af;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    background: var(--color-bg-dark-medium);
}

.color-captcha-checkbox:checked + .color-captcha-label .captcha-shape-icon {
    opacity: 0;
}

.color-captcha-checkmark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    color: #ffffff;
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-captcha-checkmark svg {
    width: 28px;
    height: 28px;
    display: block;
}

.color-captcha-checkbox:checked + .color-captcha-label {
    border-color: #6b7280;
    background: var(--color-bg-dark-medium);
}

.color-captcha-checkbox:checked + .color-captcha-label .color-captcha-checkmark {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
}

.color-captcha-checkbox:focus-visible + .color-captcha-label {
    outline: 2px solid #9ca3af;
    outline-offset: 2px;
}

.color-captcha-cross {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    color: #ffffff;
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 3;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-captcha-cross svg {
    width: 28px;
    height: 28px;
    display: block;
}

.color-captcha-checkbox-wrapper.correct .color-captcha-label {
    border-color: #10b981;
    background: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2), 0 4px 12px rgba(16, 185, 129, 0.3);
}

.color-captcha-checkbox-wrapper.correct .color-captcha-label .color-captcha-checkmark {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.color-captcha-checkbox-wrapper.correct .color-captcha-label .captcha-shape-icon {
    opacity: 0;
}

.color-captcha-checkbox-wrapper.incorrect .color-captcha-label {
    border-color: #ef4444;
    background: #ef4444;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2), 0 4px 12px rgba(239, 68, 68, 0.3);
    animation: shake 0.4s ease;
}

.color-captcha-checkbox-wrapper.incorrect .color-captcha-label .color-captcha-checkmark {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0);
}

.color-captcha-checkbox-wrapper.incorrect .color-captcha-label .captcha-shape-icon {
    opacity: 0;
}

.color-captcha-checkbox-wrapper.incorrect .color-captcha-cross {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* Responsive captcha - Tablet */
@media (max-width: 1024px) {
    .color-captcha-container {
        grid-template-columns: repeat(auto-fill, minmax(55px, 1fr));
        gap: 0.625rem;
        padding: var(--spacing-sm);
    }
}

/* Responsive captcha - Mobile */
@media (max-width: 768px) {
    #captcha-question-label {
        margin-bottom: 0.75rem;
        font-size: 0.8125rem;
    }
    
    .color-captcha-container {
        grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
        gap: 0.625rem;
        padding: 0.75rem;
        width: 100%;
        max-width: 100%;
    }
    
    .captcha-shape-icon svg {
        width: 32px;
        height: 32px;
    }
    
    .color-captcha-checkmark svg,
    .color-captcha-cross svg {
        width: 26px;
        height: 26px;
    }
}

/* Responsive captcha - Small Mobile */
@media (max-width: 480px) {
    #captcha-question-label {
        margin-bottom: 0.625rem;
        font-size: 0.8125rem;
    }
    
    .color-captcha-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
        padding: 0.625rem;
        width: 100%;
        max-width: 100%;
    }
    
    .color-captcha-checkbox-wrapper {
        width: 100%;
        max-width: 100%;
    }
    
    .captcha-shape-icon svg {
        width: 30px;
        height: 30px;
    }
    
    .color-captcha-checkmark svg,
    .color-captcha-cross svg {
        width: 24px;
        height: 24px;
    }
}

/* Responsive captcha - Extra Small Mobile */
@media (max-width: 360px) {
    .color-captcha-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
        padding: 0.5rem;
    }
    
    .captcha-shape-icon svg {
        width: 28px;
        height: 28px;
    }
    
    .color-captcha-checkmark svg,
    .color-captcha-cross svg {
        width: 22px;
        height: 22px;
    }
}

/* Responsive About & Contact */
@media (max-width: 768px) {
    .landing-contact-form {
        padding: var(--spacing-lg);
    }
}

/* Developer Section */
.developer-section-landing {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-secondary);
    position: relative;
    overflow: hidden;
}

.developer-section-landing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-secondary);
    opacity: 0.15;
}

.developer-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    position: relative;
}

.developer-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.developer-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.developer-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-md);
    position: relative;
}

.developer-photo::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: var(--color-primary);
    opacity: 0.2;
    z-index: -1;
    transition: var(--transition-base);
}

.developer-photo:hover::before {
    opacity: 0.4;
}

.developer-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.developer-info h3 {
    font-family: var(--font-primary);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.25rem;
    letter-spacing: -0.025em;
    line-height: 1.3;
}

.developer-title {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.01em;
}

.developer-bio {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-light);
    line-height: 1.75;
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.011em;
}

.developer-bio p {
    margin-bottom: var(--spacing-md);
}

.developer-bio p:last-child {
    margin-bottom: 0;
}

.developer-bio strong {
    color: var(--color-text);
    font-weight: 600;
}

.developer-expertise {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.developer-expertise h4 {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    line-height: 1.3;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-xs);
}

.expertise-item {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.expertise-item:hover {
    background: var(--color-bg-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.expertise-item span {
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.developer-contact {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    text-decoration: none;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--color-primary);
    transition: var(--transition-base);
}

.contact-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.contact-item:hover::before {
    height: 100%;
}


.contact-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-icon.email {
    background: #ea4335;
    position: relative;
    overflow: hidden;
}

.contact-icon.linkedin {
    background: #0077b5;
    position: relative;
    overflow: hidden;
}

.contact-icon svg {
    width: 18px;
    height: 18px;
}

.contact-details h5 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    color: var(--color-text);
    margin-bottom: 0.25rem;
    line-height: 1.3;
}

.contact-details p {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-text-light);
    letter-spacing: -0.01em;
    margin: 0;
    line-height: 1.4;
}

/* Responsive Developer Section */
@media (max-width: 768px) {
    .developer-content {
        padding: var(--spacing-lg);
    }
    
    .developer-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .developer-photo {
        width: 64px;
        height: 64px;
    }
    
    .developer-contact {
        grid-template-columns: 1fr;
    }
    
    .expertise-grid {
        grid-template-columns: 1fr;
    }
}

/* Custom App Development Section */
.custom-app-section-landing {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.custom-app-section-landing .section-header {
    margin-bottom: var(--spacing-xl);
}

.custom-app-section-landing .section-subtitle {
    color: var(--color-text);
    font-size: 1rem;
    line-height: 1.7;
}

.custom-app-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0;
    position: relative;
}

.custom-app-intro {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.custom-app-intro p {
    font-family: var(--font-primary);
    font-size: 1.0625rem;
    font-weight: 400;
    color: var(--color-text);
    line-height: 1.75;
    letter-spacing: -0.011em;
    margin: 0;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.custom-app-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.custom-app-feature {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    transition: var(--transition-base);
    align-items: flex-start;
}

.custom-app-feature:hover {
    transform: translateY(-2px);
}

.custom-app-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-base);
}

.custom-app-feature:hover .custom-app-icon {
    transform: scale(1.05);
}

.custom-app-icon svg {
    width: 22px;
    height: 22px;
}

.custom-app-text {
    flex: 1;
}

.custom-app-text h4 {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.015em;
    line-height: 1.4;
}

.custom-app-text p {
    font-family: var(--font-primary);
    font-size: 0.96875rem;
    font-weight: 400;
    color: var(--color-text);
    line-height: 1.7;
    letter-spacing: -0.01em;
    margin: 0;
}

.custom-app-cta {
    text-align: center;
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.custom-app-cta-text {
    font-family: var(--font-primary);
    font-size: 1.0625rem;
    font-weight: 400;
    color: var(--color-text);
    line-height: 1.75;
    letter-spacing: -0.011em;
    margin-bottom: var(--spacing-lg);
}

.custom-app-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Responsive Custom App Section */
@media (max-width: 1024px) {
    .custom-app-features {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .custom-app-section-landing {
        padding: var(--spacing-xl) 0;
    }
    
    .custom-app-section-landing .section-header {
        margin-bottom: var(--spacing-lg);
    }
    
    .custom-app-content {
        padding: 0;
    }
    
    .custom-app-intro {
        margin-bottom: var(--spacing-lg);
    }
    
    .custom-app-intro p {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .custom-app-features {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .custom-app-feature {
        flex-direction: row;
        text-align: left;
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .custom-app-icon {
        width: 40px;
        height: 40px;
    }
    
    .custom-app-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .custom-app-text h4 {
        font-size: 1.0625rem;
    }
    
    .custom-app-text p {
        font-size: 0.9375rem;
    }
    
    .custom-app-cta {
        padding-top: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .custom-app-cta-text {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .custom-app-section-landing {
        padding: var(--spacing-lg) 0;
    }
    
    .custom-app-feature {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .custom-app-icon {
        margin: 0 auto;
    }
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-md);
    background: var(--color-bg-dark);
    color: #cbd5e1;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-primary);
    opacity: 0.3;
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr;
    }
}

.footer-brand-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.footer-brand-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.footer-brand-icon .icon-light {
    display: block;
}

.footer-brand-icon .icon-dark {
    display: none;
}

.footer-brand-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.footer-brand .brand-name {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    margin: 0;
    display: flex;
    align-items: baseline;
    letter-spacing: -0.025em;
}

.footer-brand .brand-tex {
    font-weight: 400;
    color: #ffffff;
}

.footer-brand .brand-calc {
    font-weight: 700;
    color: #ffffff;
}

.footer-tagline {
    font-family: var(--font-primary);
    color: #ffffff;
    font-size: 0.8125rem;
    margin: 0;
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.5;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.footer-heading {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-list a {
    font-family: var(--font-primary);
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    font-family: var(--font-primary);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: #64748b;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.6;
}

.footer-bottom strong {
    color: white;
}

/* Responsive Adjustments */
@media (max-width: 767px) {
    .hero {
        padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-xl);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.8;
    }
}

.feature-card {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }


/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus States - Minimal */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
}

a:focus-visible,
button:focus-visible {
    outline: 1px solid var(--color-primary);
    outline-offset: 2px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: none;
}

/* Remove selection outline */
button::-moz-focus-inner {
    border: 0;
}

button:active,
a:active {
    outline: none;
}

/* Remove text selection styling on buttons */
button,
.btn {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    user-select: none;
}