/* =================================================================
   TOTAL TRACTION - WEBSITE STYLES
   Design System: Precision Engineering meets Safety-First
   ================================================================= */

/* ============= CSS VARIABLES ============= */
:root {
    /* Colors - Traffic Light System */
    --color-green: #00C853;
    --color-green-dark: #00A843;
    --color-yellow: #FFD600;
    --color-yellow-dark: #FFC400;
    --color-red: #FF1744;
    --color-red-dark: #D50000;
    
    /* Neutral Colors */
    --color-bg: #0A0E27;
    --color-bg-light: #141936;
    --color-bg-lighter: #1E2441;
    --color-text: #E8EAED;
    --color-text-muted: #9AA0A6;
    --color-border: #2D3548;
    
    /* Accent */
    --color-accent: #FF8C00;
    --color-accent-glow: rgba(255, 140, 0, 0.3);
    
    /* Typography */
    --font-display: 'DM Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============= RESET & BASE ============= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-display);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ============= CONTAINER ============= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============= NAVIGATION ============= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
    transition: background var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: translateY(-2px);
}

.logo-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 8px var(--color-accent-glow));
}

.logo-text {
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
}

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

.nav-menu a {
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a:not(.nav-cta):hover {
    color: var(--color-accent);
}

.nav-menu a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-fast);
}

.nav-menu a:not(.nav-cta):hover::after {
    width: 100%;
}

.nav-cta {
    padding: 0.5rem 1.25rem;
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: var(--radius-full);
    font-weight: 700;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-green);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 229, 255, 0.3);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

/* ============= HERO SECTION ============= */
.hero {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0.3;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.5; transform: translateX(-50%) scale(1.1); }
}

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

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-bg-lighter);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 500px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat {
    flex: 1;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-accent);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease-out 0.4s both;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, var(--color-bg-lighter) 0%, var(--color-bg) 100%);
    border-radius: 40px;
    padding: 16px;
    box-shadow: 
        0 50px 100px -20px rgba(0, 0, 0, 0.5),
        0 0 0 1px var(--color-border),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: var(--color-bg);
    border-radius: 0 0 20px 20px;
}

.traction-display {
    background: var(--color-bg);
    border-radius: 24px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.traction-circle {
    position: relative;
    width: 250px;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.traction-rings {
    position: absolute;
    width: 100%;
    height: 100%;
}

.ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid;
    opacity: 0.3;
}

.ring-75 {
    width: 100%;
    height: 100%;
    border-color: var(--color-green);
    animation: ringPulse 3s ease-in-out infinite;
}

.ring-50 {
    width: 66.67%;
    height: 66.67%;
    top: 16.67%;
    left: 16.67%;
    border-color: var(--color-yellow);
    animation: ringPulse 3s ease-in-out 0.5s infinite;
}

.ring-25 {
    width: 33.33%;
    height: 33.33%;
    top: 33.33%;
    left: 33.33%;
    border-color: var(--color-red);
    animation: ringPulse 3s ease-in-out 1s infinite;
}

@keyframes ringPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.traction-vector {
    position: absolute;
    width: 4px;
    height: 80px;
    background: linear-gradient(to bottom, var(--color-yellow), transparent);
    bottom: 50%;
    left: 50%;
    transform-origin: bottom center;
    transform: translateX(-50%) rotate(15deg);
    border-radius: 2px;
    animation: vectorMove 4s ease-in-out infinite;
}

.traction-vector::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 10px solid var(--color-yellow);
}

@keyframes vectorMove {
    0%, 100% { transform: translateX(-50%) rotate(15deg); }
    50% { transform: translateX(-50%) rotate(-20deg); }
}

.traction-percentage {
    font-size: 4rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-yellow);
    text-shadow: 0 0 20px var(--color-yellow);
    animation: percentageChange 4s ease-in-out infinite;
}

@keyframes percentageChange {
    0%, 100% { color: var(--color-yellow); text-shadow: 0 0 20px var(--color-yellow); }
    50% { color: var(--color-green); text-shadow: 0 0 20px var(--color-green); }
}

.traction-percentage span {
    font-size: 2rem;
}

.condition-indicator {
    position: absolute;
    bottom: 40px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-bg-lighter);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
}

.condition-icon {
    font-size: 1.5rem;
}

.condition-text {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--color-accent);
}

/* ============= BUTTONS ============= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-green);
    color: var(--color-bg);
    box-shadow: 0 4px 16px rgba(0, 200, 83, 0.3);
}

.btn-primary:hover {
    background: var(--color-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 200, 83, 0.4);
}

.btn-secondary {
    background: var(--color-bg-lighter);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-light);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-lighter);
    transform: translateY(-2px);
}

.btn-primary-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    background: linear-gradient(135deg, var(--color-green) 0%, var(--color-accent) 100%);
    box-shadow: 0 8px 32px rgba(0, 200, 83, 0.3);
}

.btn-primary-large:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 200, 83, 0.4);
}

/* ============= SECTIONS ============= */
section {
    padding: var(--spacing-xl) 0;
}

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

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ============= EXPLAINER SECTION ============= */
.explainer {
    background: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.explainer-content h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

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

.comparison-card {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.comparison-card.good {
    border-color: var(--color-green);
}

.comparison-card.bad {
    border-color: var(--color-red);
    opacity: 0.7;
}

.comparison-card:hover {
    transform: translateY(-4px);
}

.comparison-card.good:hover {
    box-shadow: 0 8px 32px rgba(0, 200, 83, 0.2);
}

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

.comparison-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.example-reading {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    margin: var(--spacing-md) 0;
}

.comparison-card.good .example-reading {
    color: var(--color-green);
}

.comparison-card.bad .example-reading {
    color: var(--color-red);
}

.comparison-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

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

.feature-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-green));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 32px rgba(0, 229, 255, 0.1);
}

.feature-card.featured {
    background: linear-gradient(135deg, rgba(0, 200, 83, 0.1) 0%, rgba(0, 229, 255, 0.1) 100%);
    border-color: var(--color-green);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.feature-tag {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: 0.25rem 0.75rem;
    background: var(--color-green);
    color: var(--color-bg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cta-centered {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ============= USE CASES ============= */
.use-cases {
    background: var(--color-bg-light);
}

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

.use-case {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    position: relative;
    transition: all var(--transition-normal);
}

.use-case:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
}

.use-case-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-bg-lighter);
    line-height: 1;
}

.use-case h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    padding-right: 3rem;
}

.use-case p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============= COMPETITIVE TABLE ============= */
.competitive {
    background: var(--color-bg);
}

/* ============= APP SCREENSHOTS GALLERY ============= */
.app-screenshots {
    background: var(--color-bg-light);
    padding: var(--spacing-xl) 0;
}

.screenshots-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.screenshot-frame {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.screenshot-frame:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 48px rgba(255, 140, 0, 0.2);
    border-color: var(--color-accent);
}

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

.screenshot-caption {
    text-align: center;
    padding: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.4;
}

/* ============= COMPETITIVE TABLE ============= */
.competitive {
    background: var(--color-bg);
}

.competitive h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.competitive-table {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.competitive-header,
.competitive-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    align-items: center;
}

.competitive-header {
    background: var(--color-bg-lighter);
    font-weight: 700;
    border-bottom: 2px solid var(--color-border);
}

.competitive-row {
    border-bottom: 1px solid var(--color-border);
}

.competitive-row:last-child {
    border-bottom: none;
}

.competitive-row:hover {
    background: var(--color-bg);
}

.feature-name {
    font-weight: 600;
}

.value {
    text-align: center;
    color: var(--color-text-muted);
}

.value.highlight {
    color: var(--color-green);
    font-weight: 700;
}

.competitive-header .highlight {
    color: var(--color-accent);
}

/* ============= FINAL CTA ============= */
.final-cta {
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-bg) 100%);
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
    opacity: 0.2;
}

.cta-box {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.cta-box p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

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

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ============= FOOTER ============= */
.footer {
    background: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-md) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

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

.footer-col h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
}

.footer-col a {
    display: block;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    transition: color var(--transition-fast);
    font-size: 0.9375rem;
}

.footer-col a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer-disclaimer {
    margin-top: 0.5rem;
    font-size: 0.75rem;
}

/* ============= RESPONSIVE ============= */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-visual {
        order: 1;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 73px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-top: 1px solid var(--color-border);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .traction-circle {
        width: 200px;
        height: 200px;
    }
    
    .traction-percentage {
        font-size: 3rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .competitive-header,
    .competitive-row {
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .features-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
}

/* ============= PAGE HEADER ============= */
.page-header {
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-lg) 0;
    text-align: center;
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ============= FEATURES DETAILED PAGE ============= */
.features-detailed {
    padding: var(--spacing-xl) 0;
}

.feature-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.feature-detail:last-child {
    border-bottom: none;
}

.feature-detail:nth-child(even) .feature-detail-content {
    order: 2;
}

.feature-detail:nth-child(even) .feature-detail-visual {
    order: 1;
}

.feature-detail.featured-detail {
    background: linear-gradient(135deg, rgba(0, 200, 83, 0.05) 0%, rgba(0, 229, 255, 0.05) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-green);
}

.feature-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-green);
    color: var(--color-bg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.feature-detail-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.feature-detail-content h3 {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.feature-detail-content h4 {
    font-size: 1.25rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.feature-detail-content p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.feature-benefits,
.feature-specs {
    margin-top: var(--spacing-md);
}

.benefit-item {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
}

.benefit-item svg {
    flex-shrink: 0;
    color: var(--color-green);
    margin-top: 2px;
}

.feature-specs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.spec-item {
    background: var(--color-bg-light);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-align: center;
}

.spec-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.spec-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
}

.color-system {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.color-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
}

.color-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    flex-shrink: 0;
}

.color-indicator.green .color-dot {
    background: var(--color-green);
    box-shadow: 0 0 12px var(--color-green);
}

.color-indicator.yellow .color-dot {
    background: var(--color-yellow);
    box-shadow: 0 0 12px var(--color-yellow);
}

.color-indicator.red .color-dot {
    background: var(--color-red);
    box-shadow: 0 0 12px var(--color-red);
}

.color-name {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.color-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.use-case-example,
.alert-example,
.tech-note,
.feature-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-sm);
}

.conditions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.condition-card {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-normal);
}

.condition-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
}

.condition-emoji {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.condition-card h4 {
    font-size: 1.25rem;
    margin: var(--spacing-xs) 0;
}

.condition-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin: var(--spacing-sm) 0;
}

.condition-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.physics-examples {
    margin-top: var(--spacing-md);
}

.physics-item {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
}

.physics-item h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
}

.display-modes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.mode-option {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.mode-option h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

.mode-option ul {
    list-style: none;
    padding: 0;
}

.mode-option li {
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    position: relative;
    color: var(--color-text-muted);
}

.mode-option li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

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

.step {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-mono);
}

.step-content h4 {
    margin: 0 0 0.25rem 0;
}

.step-content p {
    margin: 0;
    font-size: 0.9375rem;
}

.additional-features {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

.additional-features h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.features-list {
    display: grid;
    gap: var(--spacing-md);
}

.list-feature {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.list-feature:hover {
    transform: translateX(8px);
    border-color: var(--color-accent);
}

.list-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.list-content h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
}

.list-content p {
    margin: 0;
    color: var(--color-text-muted);
}

.screenshot-placeholder {
    background: var(--color-bg-lighter);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    aspect-ratio: 9/16;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    text-align: center;
    min-height: 400px;
}

.placeholder-icon {
    font-size: 4rem;
    opacity: 0.5;
}

.screenshot-placeholder p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

@media (max-width: 968px) {
    .feature-detail {
        grid-template-columns: 1fr;
    }
    
    .feature-detail:nth-child(even) .feature-detail-content,
    .feature-detail:nth-child(even) .feature-detail-visual {
        order: initial;
    }
    
    .display-modes {
        grid-template-columns: 1fr;
    }
    
    .conditions-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .feature-specs {
        grid-template-columns: 1fr;
    }
}

/* ============= HOW IT WORKS PAGE ============= */
.quick-start {
    background: var(--color-bg-light);
}

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

.steps-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.timeline-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 60px;
    width: 2px;
    height: calc(100% - 40px);
    background: var(--color-border);
}

.timeline-marker {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-green), var(--color-accent));
    color: var(--color-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    font-family: var(--font-mono);
    box-shadow: 0 4px 16px rgba(0, 200, 83, 0.3);
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-content p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.understanding-display {
    padding: var(--spacing-xl) 0;
}

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

.detail-item {
    margin-bottom: var(--spacing-md);
}

.detail-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.detail-item p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.training-guide {
    background: var(--color-bg-light);
}

.training-scenarios {
    display: grid;
    gap: var(--spacing-md);
}

.scenario {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.scenario-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg-lighter);
    border-bottom: 1px solid var(--color-border);
}

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

.scenario-header h3 {
    font-size: 1.5rem;
}

.scenario-content {
    padding: var(--spacing-md);
}

.scenario-content h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.scenario-content ol {
    margin: var(--spacing-sm) 0 var(--spacing-sm) 1.5rem;
    color: var(--color-text-muted);
}

.scenario-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.scenario-tip {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--color-bg-lighter);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
}

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

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

.physics-card {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.physics-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.physics-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.physics-card ul {
    margin-left: 1.5rem;
    color: var(--color-text-muted);
}

.physics-card li {
    margin-bottom: 0.5rem;
}

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

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

.tip-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.tip-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
}

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

.tip-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.tip-card p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.maneuvers-section {
    padding: var(--spacing-xl) 0;
}

.maneuver-list {
    display: grid;
    gap: var(--spacing-md);
}

.maneuver {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.maneuver h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.maneuver p {
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.faq-preview {
    background: var(--color-bg-light);
}

.faq-items {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.faq-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.faq-item h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.faq-item p {
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============= SUPPORT PAGE ============= */
.faq-section {
    padding: var(--spacing-xl) 0;
}

.faq-category {
    margin-bottom: var(--spacing-xl);
}

.faq-category h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.faq-list {
    display: grid;
    gap: var(--spacing-sm);
}

.faq-accordion {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-accordion:hover {
    border-color: var(--color-accent);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    cursor: pointer;
    user-select: none;
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.faq-toggle {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-accent);
    transition: transform var(--transition-fast);
}

.faq-accordion.open .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
    color: var(--color-text-muted);
    line-height: 1.7;
}

.faq-answer a {
    color: var(--color-accent);
    text-decoration: underline;
}

.contact-section {
    background: var(--color-bg-light);
    padding: var(--spacing-xl) 0;
}

.contact-box {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg) auto;
}

.contact-method {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
}

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

.contact-method h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.contact-method p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.contact-note {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.contact-note h4 {
    margin-bottom: var(--spacing-sm);
}

.contact-note ul {
    margin-left: 1.5rem;
    color: var(--color-text-muted);
}

.contact-note li {
    margin-bottom: 0.5rem;
}

/* ============= DOWNLOAD PAGE ============= */
.download-hero {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl) 0;
}

.download-hero .container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.download-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.download-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.download-badge {
    margin-bottom: var(--spacing-md);
}

.app-store-placeholder {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-lighter);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
}

.badge-note {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

.download-features {
    display: grid;
    gap: var(--spacing-sm);
}

.download-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.download-feature svg {
    color: var(--color-green);
    flex-shrink: 0;
}

.download-specs {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.download-specs h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.specs-list {
    list-style: none;
    padding: 0;
}

.specs-list li {
    padding: 0.5rem 0;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.specs-list li:last-child {
    border-bottom: none;
}

.version-history {
    background: var(--color-bg-light);
    padding: var(--spacing-xl) 0;
}

.version {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.version-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.version-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.version-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-green);
    color: var(--color-bg);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

.version-notes h4 {
    margin-bottom: var(--spacing-sm);
}

.version-notes ul {
    margin-left: 1.5rem;
    color: var(--color-text-muted);
}

.version-notes li {
    margin-bottom: 0.5rem;
}

.screenshots-section {
    padding: var(--spacing-xl) 0;
}

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

.screenshot-item {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.screenshot-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(255, 140, 0, 0.15);
    border-color: var(--color-accent);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-caption {
    padding: var(--spacing-sm);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* ============= LEGAL PAGES ============= */
.legal-content {
    padding: var(--spacing-xl) 0;
    max-width: 800px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: var(--spacing-lg);
}

.legal-section h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.legal-section h3 {
    font-size: 1.25rem;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.legal-section p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.legal-section ul {
    margin-left: 1.5rem;
    color: var(--color-text-muted);
}

.legal-section li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.highlight-box {
    background: var(--color-bg-light);
    border: 1px solid var(--color-green);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.highlight-box h3 {
    color: var(--color-green);
    margin-top: 0;
}

/* ============= ABOUT PAGE ============= */
.about-content {
    padding: var(--spacing-xl) 0;
}

.about-story {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl) auto;
}

.about-story h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.about-story p {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

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

.mission,
.vision {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.mission h3,
.vision h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.mission p,
.vision p {
    color: var(--color-text-muted);
    line-height: 1.7;
}

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

.principles h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

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

.principle {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.principle h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-accent);
}

.principle p {
    color: var(--color-text-muted);
    line-height: 1.6;
    font-size: 0.9375rem;
}

.technical-details {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl) auto;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.technical-details h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.technical-details ul {
    margin-left: 1.5rem;
    color: var(--color-text-muted);
}

.technical-details li {
    margin-bottom: 0.5rem;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.contact-info p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.contact-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.contact-item {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.contact-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-item a {
    color: var(--color-accent);
    font-weight: 600;
}

/* ============= RESPONSIVE UPDATES ============= */
@media (max-width: 968px) {
    .display-explanation {
        grid-template-columns: 1fr;
    }
    
    .download-hero .container {
        grid-template-columns: 1fr;
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .timeline-step {
        flex-direction: column;
        padding-left: 60px;
        position: relative;
    }
    
    .timeline-marker {
        position: absolute;
        left: 0;
        top: 0;
    }
    
    .timeline-step::after {
        left: 24px;
        top: 60px;
    }
}