/* ========================================
   NEATAREA - Landing Page Styles
   Design: Dark Mode + Glassmorphism
   Style: Linear/Vercel/Windows 11
======================================== */

/* ===== CSS Custom Properties ===== */
:root {
    /* Colors */
    --color-bg-primary: #050505;
    --color-bg-secondary: #0a0a0a;
    --color-bg-elevated: #111111;
    --color-bg-card: rgba(255, 255, 255, 0.03);
    --color-bg-card-hover: rgba(255, 255, 255, 0.06);

    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1a1;
    --color-text-tertiary: #666666;

    --color-accent: #00d4ff;
    --color-accent-hover: #00b8e6;
    --color-accent-glow: rgba(0, 212, 255, 0.4);
    --color-accent-subtle: rgba(0, 212, 255, 0.1);

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);

    /* Gradients */
    --gradient-text: linear-gradient(135deg, #00d4ff 0%, #00ff88 100%);
    --gradient-glow: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 70%);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 20px;

    /* Typography */
    --font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, 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;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px var(--color-accent-glow);

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ===== 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);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

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

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

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===== Utility Classes ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in--visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in--delay {
    transition-delay: 200ms;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse-glow {

    0%,
    100% {
        opacity: 0.4;
    }

    50% {
        opacity: 0.8;
    }
}

@keyframes scroll-bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(8px);
    }
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: background var(--transition-base), backdrop-filter var(--transition-base), padding var(--transition-base);
}

.header--scrolled {
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.nav__logo:hover {
    color: var(--color-accent);
}

.nav__logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
}

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

.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(--color-accent);
    transition: width var(--transition-base);
}

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

.nav__link:hover::after {
    width: 100%;
}

.nav__link--cta {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-accent);
    color: var(--color-bg-primary) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
}

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

.nav__link--cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.nav__link--github {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
}

.nav__link--github::after {
    display: none;
}

.nav__link--github svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.nav__link--github:hover svg {
    transform: scale(1.15);
    color: var(--color-text-primary);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav__toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.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 Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: var(--spacing-4xl) 0;
    overflow: hidden;
}

.hero__bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: var(--gradient-glow);
    border-radius: 50%;
    top: 10%;
    right: -10%;
    pointer-events: none;
    animation: pulse-glow 4s ease-in-out infinite;
}

.hero__bg-glow--secondary {
    width: 400px;
    height: 400px;
    top: 60%;
    left: -5%;
    animation-delay: 2s;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__content {
    max-width: 600px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

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

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
}

.hero__title--gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.hero__cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.hero__version {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.hero__visual {
    position: relative;
}

.hero__video-wrapper {
    padding: var(--spacing-sm);
    overflow: hidden;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        0 0 80px rgba(0, 212, 255, 0.15);
}

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

.hero__scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    animation: scroll-bounce 2s ease-in-out infinite;
}

.hero__scroll-indicator svg {
    width: 20px;
    height: 20px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn__icon {
    width: 20px;
    height: 20px;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 0 80px var(--color-accent-glow);
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-base);
}

.btn--large .btn__icon {
    width: 24px;
    height: 24px;
}

.btn--outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-text-secondary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-3px);
}

.btn--outline .btn__icon {
    width: 18px;
    height: 18px;
}

/* Hero Buttons Container */
.hero__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
}

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-accent-subtle);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

/* ===== Features Section ===== */
.features {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg-secondary);
    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(2, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-accent-subtle) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-5px);
}

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

.feature-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent);
    position: relative;
    z-index: 1;
}

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

.feature-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.feature-card__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ===== Video Demo Section ===== */
.video-demo {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg-primary);
    position: relative;
}

.video-demo__container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.video-demo__glow {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(1.5);
    pointer-events: none;
    opacity: 0.4;
    animation: pulse-glow 4s ease-in-out infinite;
}

.video-demo__wrapper {
    position: relative;
    z-index: 1;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow:
        0 25px 80px -12px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.08),
        0 0 100px rgba(0, 212, 255, 0.2);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.video-demo__wrapper:hover {
    transform: translateY(-5px);
    box-shadow:
        0 30px 100px -12px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(255, 255, 255, 0.12),
        0 0 120px rgba(0, 212, 255, 0.3);
}

.video-demo__player {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
}

/* Custom video controls styling */
.video-demo__player::-webkit-media-controls-panel {
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

.video-demo__caption {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.video-demo__caption svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    animation: pulse-glow 2s ease-in-out infinite;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-bg-secondary);
}

.cta-card {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.cta-card__glow {
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--gradient-glow);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0.5;
}

.cta-card__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.cta-card__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

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

.cta-card__note {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    position: relative;
    z-index: 1;
}

/* ===== Footer ===== */
.footer {
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

.footer__container {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-3xl);
}

.footer__brand {
    max-width: 300px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

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

.footer__tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer__links {
    display: flex;
    gap: var(--spacing-3xl);
}

.footer__column-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.footer__column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

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

.footer__bottom {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.footer__copyright,
.footer__tech {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.footer__copyright strong {
    color: var(--color-accent);
}

.footer__github {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.footer__github svg {
    width: 16px;
    height: 16px;
}

.footer__github:hover {
    color: var(--color-accent);
}

/* ===== Responsive Design ===== */

/* Tablet - 1024px */
@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.75rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }

    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }

    .hero__content {
        max-width: 100%;
        order: 1;
    }

    .hero__visual {
        order: 2;
        max-width: 700px;
        margin: 0 auto;
    }

    .hero__cta {
        align-items: center;
    }

    .hero__buttons {
        justify-content: center;
    }

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

    .video-demo__container {
        max-width: 100%;
    }

    .cta-card {
        padding: var(--spacing-2xl);
    }

    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer__brand {
        max-width: 100%;
    }

    .footer__logo {
        justify-content: center;
    }

    .footer__links {
        justify-content: center;
    }

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

/* Mobile Landscape / Small Tablet - 768px */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --container-padding: 1.25rem;
    }

    /* Mobile Navigation */
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-elevated);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
        padding: var(--spacing-xl);
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-border);
        z-index: 999;
    }

    .nav__menu--active {
        right: 0;
    }

    .nav__link {
        font-size: var(--font-size-lg);
        padding: var(--spacing-sm) 0;
    }

    .nav__link--github {
        order: 10;
        margin-top: var(--spacing-md);
    }

    .nav__link--github svg {
        width: 28px;
        height: 28px;
    }

    .nav__link--cta {
        margin-top: var(--spacing-md);
    }

    .nav__toggle {
        display: flex;
        z-index: 1001;
    }

    /* Hero Section */
    .hero {
        min-height: auto;
        padding: calc(var(--spacing-4xl) + 60px) 0 var(--spacing-2xl);
    }

    .hero__scroll-indicator {
        display: none;
    }

    .hero__bg-glow {
        width: 250px;
        height: 250px;
        opacity: 0.6;
    }

    .hero__bg-glow--secondary {
        width: 200px;
        height: 200px;
    }

    .hero__buttons {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
    }

    .hero__buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .hero__visual {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }

    /* Features Grid */
    .features {
        padding: var(--spacing-3xl) 0;
    }

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

    .feature-card {
        padding: var(--spacing-lg);
    }

    .feature-card__icon {
        width: 40px;
        height: 40px;
        margin-bottom: var(--spacing-md);
    }

    .feature-card__icon svg {
        width: 20px;
        height: 20px;
    }

    /* Video Demo */
    .video-demo {
        padding: var(--spacing-3xl) 0;
    }

    .video-demo__wrapper {
        padding: var(--spacing-xs);
    }

    .video-demo__caption {
        font-size: var(--font-size-xs);
    }

    /* CTA Section */
    .cta-section {
        padding: var(--spacing-3xl) 0;
    }

    .cta-card {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    .cta-card__title {
        font-size: var(--font-size-2xl);
    }

    .cta-card__subtitle {
        font-size: var(--font-size-base);
    }

    /* Footer */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }

    .footer__links {
        gap: var(--spacing-md);
    }

    .footer__bottom {
        padding-top: var(--spacing-lg);
        margin-top: var(--spacing-lg);
    }

    .footer__github {
        order: 0;
    }

    /* Section Headers */
    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

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

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

/* Mobile Portrait - 480px */
@media (max-width: 480px) {
    :root {
        --font-size-5xl: 1.75rem;
        --font-size-4xl: 1.5rem;
        --font-size-3xl: 1.25rem;
        --font-size-2xl: 1.125rem;
        --container-padding: 1rem;
    }

    /* Header */
    .nav__logo span {
        font-size: var(--font-size-base);
    }

    .nav__logo-icon {
        width: 24px;
        height: 24px;
    }

    /* Hero */
    .hero {
        padding: calc(var(--spacing-3xl) + 50px) 0 var(--spacing-xl);
    }

    .hero__badge {
        font-size: 0.65rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .hero__title {
        font-size: var(--font-size-4xl);
        line-height: 1.2;
    }

    .hero__subtitle {
        font-size: var(--font-size-base);
        line-height: 1.6;
    }

    .hero__version {
        font-size: 0.65rem;
        text-align: center;
    }

    .hero__buttons {
        max-width: 100%;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .btn__icon {
        width: 18px;
        height: 18px;
    }

    .btn--large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    /* Features */
    .feature-card__title {
        font-size: var(--font-size-lg);
    }

    .feature-card__description {
        font-size: var(--font-size-sm);
    }

    /* Video Demo */
    .video-demo__glow {
        display: none;
    }

    /* CTA */
    .cta-card {
        padding: var(--spacing-lg);
    }

    .cta-card__glow {
        display: none;
    }

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

    .cta-card__subtitle {
        font-size: var(--font-size-sm);
    }

    .cta-card__note {
        font-size: var(--font-size-xs);
    }

    /* Footer */
    .footer__tagline {
        font-size: var(--font-size-xs);
    }

    .footer__column-title {
        font-size: var(--font-size-sm);
    }

    .footer__column a {
        font-size: var(--font-size-xs);
    }

    .footer__links {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .footer__bottom {
        gap: var(--spacing-sm);
    }

    .footer__copyright,
    .footer__tech,
    .footer__github {
        font-size: 0.65rem;
    }
}

/* Extra Small Devices - 360px */
@media (max-width: 360px) {
    :root {
        --font-size-5xl: 1.5rem;
        --font-size-4xl: 1.25rem;
        --container-padding: 0.75rem;
    }

    .hero__title {
        font-size: 1.5rem;
    }

    .hero__subtitle {
        font-size: var(--font-size-sm);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
    }

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

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .fade-in {
        opacity: 1;
        transform: none;
    }
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ===== Selection ===== */
::selection {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-text-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
}