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

:root {
    /* Colors */
    --color-primary: #0B0A0F;
    --color-accent: #FF5722;
    --color-accent-glow: rgba(255, 87, 34, 0.4);
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-overlay: rgba(0, 0, 0, 0.95);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ===================================
   NAVIGATION
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(11, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md) 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background-color: rgba(11, 10, 15, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo img {
    height: 32px;
    width: auto;
}

/* Back Button */
.back-button {
    display: flex;
    align-items: center;
    color: var(--color-text-primary);
    text-decoration: none;
    transition: all var(--transition-normal);
    position: absolute;
    left: var(--spacing-lg);
}

.back-button:hover {
    opacity: 0.7;
    transform: translateX(-3px);
}

.back-button svg {
    width: 28px;
    height: 28px;
    transition: transform var(--transition-fast);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
    font-size: 0.875rem;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), #FF8A65);
    transition: width var(--transition-normal);
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu Overlay */
/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 200px;
    height: auto;
    background: rgba(18, 18, 23, 0.95);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: block;
    box-shadow: 
        0 4px 24px -1px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.02);
    overflow: hidden;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.mobile-menu-content {
    padding: 1.25rem;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: left;
    width: 100%;
}

.mobile-nav-links li {
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.3s ease;
}

.mobile-menu.active .mobile-nav-links li {
    opacity: 1;
    transform: translateX(0);
}

/* Staggered Delay for "Mature" Animation */
.mobile-menu.active .mobile-nav-links li:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-nav-links li:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-nav-links li:nth-child(3) { transition-delay: 0.2s; }

.mobile-nav-links a {
    text-decoration: none;
    color: var(--color-text-secondary); /* Start with secondary color for elegance */
    font-family: var(--font-family);
    font-size: 0.875rem; /* 14px */
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    position: relative;
}

.mobile-nav-links a:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(4px);
}

.mobile-nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background-color: var(--color-accent);
    border-radius: 0 2px 2px 0;
    transition: height 0.2s ease;
    opacity: 0;
}

.mobile-nav-links a:hover::after {
    height: 60%;
    opacity: 1;
}

.mobile-social {
    display: none;
}

/* Mobile Menu Backdrop */
.mobile-menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-menu-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 87, 34, 0.1) 0%, transparent 70%);
    pointer-events: none;
    animation: pulse 8s ease-in-out infinite;
}

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

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-social {
    position: absolute;
    top: 120px;
    left: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

.hero-social a {
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.hero-social a:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.title-line-1 {
    display: block;
    background: linear-gradient(135deg, #FFFFFF 0%, #E0E0E0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.title-line-2 {
    display: block;
    background: linear-gradient(135deg, #FFFFFF 0%, #B0B0B0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-image {
    margin: var(--spacing-2xl) auto;
    max-width: 914px;
    width: 100%;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.keyboard-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    /* box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 80px rgba(255, 87, 34, 0.2);
    transition: transform var(--transition-slow); */
}

.keyboard-image:hover {
    transform: translateY(-10px) scale(1.02);
}

.cta-wrapper {
    margin-top: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out 0.8s backwards;
}

.cta-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.3),
        0 0 60px var(--color-accent-glow);
}

.cta-button::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    filter: blur(8px);
}

.cta-button::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 87, 34, 0.1), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.4),
        0 0 80px rgba(255, 87, 34, 0.6);
    border-color: rgba(255, 87, 34, 0.3);
}

.cta-button:hover::after {
    opacity: 1;
}

.cta-button:active {
    transform: translateY(-1px);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: var(--spacing-3xl);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

.footer-logo img {
    height: 24px;
    width: auto;
}

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

/* ===================================
   UTILITY CLASSES
   =================================== */
.desktop-nav {
    display: flex;
}

.mobile-only {
    display: none;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }

    .back-button {
        display: none;
    }

    .desktop-nav {
        display: none;
    }

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

    .mobile-only {
        display: flex;
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .hero-social {
        position: static;
        justify-content: center;
        margin-bottom: var(--spacing-lg);
    }

    .hero-title {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 var(--spacing-sm);
    }

    .hero-image {
        margin: var(--spacing-lg) auto;
    }

    .cta-button {
        padding: 0.875rem 2.5rem;
        font-size: 1rem;
    }

    .footer {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .navbar {
        padding: var(--spacing-sm) 0;
    }

    .logo {
        font-size: 1rem;
    }

    .logo img {
        height: 28px;
    }

    .hero-title {
        margin-bottom: var(--spacing-sm);
    }

    .hero-subtitle {
        margin-bottom: var(--spacing-lg);
    }

    /* .mobile-nav-links a font-size override removed */
}

/* ===================================
   ANIMATIONS & MICRO-INTERACTIONS
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}