/* ============================================
   PLOXTO LANDING PAGE — DESIGN SYSTEM
   Inspired by the app's dark, premium aesthetic
   ============================================ */

/* --- CSS Variables --- */
:root {
    --color-bg: #000000;
    --color-bg-elevated: #0a0a0a;
    --color-bg-card: #111111;
    --color-bg-card-hover: #1a1a1a;
    --color-surface: #161616;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);

    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.65);
    --color-text-tertiary: rgba(255, 255, 255, 0.4);

    --color-accent-start: #ffffff;
    --color-accent-mid: #e0e0e0;
    --color-accent-end: #b0b0b0;
    --gradient-accent: linear-gradient(135deg, var(--color-accent-start), var(--color-accent-mid), var(--color-accent-end));
    --gradient-accent-glow: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(200, 200, 200, 0.2));

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --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);

    --container-max: 1200px;
    --container-padding: 24px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

/* --- Utility --- */
.gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent-start);
    margin-bottom: 16px;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-base);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 1px;
    transition: width var(--transition-base);
}

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

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

.nav-cta {
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    background: var(--color-text-primary);
    color: var(--color-bg);
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px var(--container-padding) 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255, 255, 255, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(200, 200, 200, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse 60% 50% at 20% 80%, rgba(150, 150, 150, 0.04) 0%, transparent 50%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particles .particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin-bottom: 60px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-accent-start);
    margin-bottom: 32px;
    animation: fade-in-up 0.8s ease-out;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent-start);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fade-in-up 0.8s ease-out 0.1s both;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fade-in-up 0.8s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    animation: fade-in-up 0.8s ease-out 0.3s both;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius-full);
    background: var(--color-text-primary);
    color: var(--color-bg);
    font-size: var(--font-size-base);
    font-weight: 600;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(255, 255, 255, 0.15), 0 0 80px rgba(255, 255, 255, 0.05);
}

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

.btn-large {
    padding: 20px 44px;
    font-size: var(--font-size-lg);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    font-weight: 500;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-secondary:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
    background: rgba(255, 255, 255, 0.03);
}

.apple-icon {
    width: 20px;
    height: 20px;
}

.apple-icon-small {
    width: 16px;
    height: 16px;
}

.hero-visual {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 900px;
    animation: fade-in-up 0.8s ease-out 0.4s both;
}

.hero-image-compare {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    aspect-ratio: 3 / 4;
    cursor: ew-resize;
    container-type: size;
}

.hero-image-compare img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
    user-select: none;
}

.compare-before, .compare-after {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.compare-after {
    width: 50%;
    overflow: hidden;
    border-right: 2px solid var(--color-text-primary);
    box-shadow: 5px 0 15px rgba(0,0,0,0.5);
    z-index: 2;
}

.compare-after img {
    width: 100cqw;
    height: 100cqh;
    max-width: none;
    object-position: left center;
}

.compare-label {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(0,0,0,0.6);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    z-index: 3;
    pointer-events: none;
    backdrop-filter: blur(4px);
}

.label-right {
    left: auto;
    right: 20px;
}

.compare-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    margin-left: -2px;
    background: var(--color-text-primary);
    z-index: 4;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.handle-button {
    width: 40px;
    height: 40px;
    background: var(--color-text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
    box-shadow: 0 0 15px rgba(255,255,255,0.4);
}

.hero-image-glow {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    box-shadow:
        0 0 80px rgba(255, 255, 255, 0.1),
        0 0 160px rgba(200, 200, 200, 0.05);
    pointer-events: none;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent-start), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 1; height: 40px; }
    50% { opacity: 0.3; height: 20px; }
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    padding: 120px 0;
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent-start);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.feature-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.how-it-works {
    padding: 120px 0;
    background: var(--color-bg-elevated);
    position: relative;
}

.how-it-works::before,
.how-it-works::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.how-it-works::before { top: 0; }
.how-it-works::after { bottom: 0; }

.steps-container {
    display: flex;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    position: relative;
    text-align: center;
    padding: 0 16px;
}

.step-number {
    font-size: var(--font-size-5xl);
    font-weight: 900;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    margin-bottom: 24px;
    line-height: 1;
}

.step-content {
    position: relative;
    z-index: 1;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.step-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.step-line {
    position: absolute;
    top: 40px;
    right: -20px;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-start), transparent);
    opacity: 0.3;
}

.step:last-child .step-line {
    display: none;
}

/* ============================================
   SHOWCASE SECTION
   ============================================ */
.showcase {
    padding: 120px 0;
    position: relative;
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 24px;
}

.showcase-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-base);
}

.showcase-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.showcase-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.showcase-card:hover img {
    transform: scale(1.05);
}

.showcase-large {
    grid-row: span 2;
}

.showcase-large img {
    height: 100%;
    min-height: 500px;
}

.showcase-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 24px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    transform: translateY(10px);
    opacity: 0;
    transition: all var(--transition-base);
}

.showcase-card:hover .showcase-overlay {
    transform: translateY(0);
    opacity: 1;
}

.showcase-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-accent-start);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.showcase-caption {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ============================================
   APP PREVIEW SECTION
   ============================================ */
.app-preview {
    padding: 120px 0;
    background: var(--color-bg-elevated);
    position: relative;
    overflow: hidden;
}

.app-preview::before,
.app-preview::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.app-preview::before { top: 0; }
.app-preview::after { bottom: 0; }

.app-preview-content {
    display: flex;
    align-items: center;
    gap: 80px;
}

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

.app-preview-text .section-title {
    text-align: left;
}

.app-preview-text .section-description {
    text-align: left;
    margin-bottom: 32px;
}

.app-features-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.app-features-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.app-features-list li svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent-start);
    flex-shrink: 0;
}

.app-preview-image {
    flex: 1.2;
    position: relative;
}

.app-preview-image img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    border-radius: var(--radius-xl);
}

.app-preview-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
    padding: 120px 0;
    position: relative;
}

.cta-content {
    position: relative;
    text-align: center;
    padding: 80px 40px;
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 500px;
    margin: 0 auto 40px;
    position: relative;
    z-index: 1;
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 80px 0 40px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    gap: 64px;
    margin-bottom: 64px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.footer-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.footer-tagline {
    font-size: var(--font-size-base);
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

.footer-links-group {
    display: flex;
    gap: 64px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.store-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.store-badge:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

/* ============================================
   SCROLL ANIMATIONS (IntersectionObserver)
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }
.animate-on-scroll.delay-5 { transition-delay: 0.5s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .app-preview-content {
        flex-direction: column;
        gap: 48px;
    }

    .app-preview-text .section-title,
    .app-preview-text .section-description {
        text-align: center;
    }

    .app-features-list {
        align-items: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 20px;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 999;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links .nav-link {
        font-size: var(--font-size-2xl);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 100px var(--container-padding) 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-scroll-indicator {
        display: none;
    }

    .features {
        padding: 80px 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-card {
        padding: 28px 24px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .how-it-works {
        padding: 80px 0;
    }

    .steps-container {
        flex-direction: column;
        gap: 32px;
    }

    .step-line {
        display: none;
    }

    .step-number {
        font-size: var(--font-size-4xl);
    }

    .showcase {
        padding: 80px 0;
    }

    .showcase-grid {
        grid-template-columns: 1fr;
    }

    .showcase-large {
        grid-row: span 1;
    }

    .showcase-large img {
        min-height: 300px;
    }

    .showcase-overlay {
        transform: translateY(0);
        opacity: 1;
    }

    .app-preview {
        padding: 80px 0;
    }

    .cta {
        padding: 80px 0;
    }

    .cta-content {
        padding: 48px 24px;
    }

    .cta-title {
        font-size: var(--font-size-3xl);
    }

    .footer-top {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links-group {
        flex-wrap: wrap;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .btn-primary {
        padding: 14px 28px;
        font-size: var(--font-size-sm);
    }

    .btn-large {
        padding: 16px 32px;
        font-size: var(--font-size-base);
    }
}