/* ============================================
   Design System & CSS Variables
   ============================================ */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a24;
    --color-bg-card: rgba(26, 26, 36, 0.6);

    /* Accent Colors */
    --color-accent-primary: #00d4ff;
    --color-accent-secondary: #7c3aed;
    --color-accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --color-accent-glow: rgba(0, 212, 255, 0.3);

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-tertiary: #71717a;
    --color-text-accent: #00d4ff;

    /* Border Colors */
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-hover: rgba(255, 255, 255, 0.2);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px var(--color-accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-Index */
    --z-navbar: 100;
    --z-modal: 200;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    border: 2px solid var(--color-bg-secondary);
}

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

::selection {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

p {
    color: var(--color-text-secondary);
}

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

section {
    padding: var(--spacing-4xl) 0;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px var(--color-accent-glow);
}

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

.btn-secondary:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-navbar);
    padding: var(--spacing-lg) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
    list-style: none;
}

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

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

.nav-cta {
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary) !important;
    border-radius: var(--radius-md);
}

.nav-cta:hover {
    transform: scale(1.05);
}

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

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

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

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

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    z-index: calc(var(--z-navbar) - 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-menu::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

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

.mobile-nav-links {
    list-style: none;
    text-align: center;
    position: relative;
    z-index: 1;
}

.mobile-nav-links li {
    margin: var(--spacing-xl) 0;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

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

.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-menu.active .mobile-nav-links li:nth-child(4) {
    transition-delay: 0.25s;
}

.mobile-nav-links a {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    position: relative;
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: all var(--transition-base);
}

.mobile-nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent-gradient);
    transition: width var(--transition-base);
}

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

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


/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(124, 58, 237, 0.3), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 212, 255, 0.15), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(124, 58, 237, 0.2), transparent);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
}

.hero-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.hero-greeting {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-md);
}

.hero-name {
    font-size: clamp(var(--font-size-4xl), 10vw, var(--font-size-6xl));
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(var(--font-size-xl), 4vw, var(--font-size-3xl));
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    max-width: 500px;
    margin: 0 auto var(--spacing-2xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.hero-social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.hero-social-btn:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    transform: translateY(-2px);
    background: rgba(0, 212, 255, 0.05);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--color-text-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--color-text-tertiary);
    border-radius: var(--radius-full);
    animation: scroll-wheel 2s infinite;
}

@keyframes scroll-wheel {

    0%,
    100% {
        opacity: 1;
        transform: translateY(0);
    }

    50% {
        opacity: 0.3;
        transform: translateY(6px);
    }
}

/* ============================================
   Section Titles
   ============================================ */
.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-3xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.title-accent {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-accent-primary);
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    gap: var(--spacing-3xl);
}

.about-intro {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 700px;
    line-height: 1.8;
}

.about-intro strong {
    color: var(--color-accent-primary);
    font-weight: 600;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-3xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent-primary), var(--color-accent-secondary));
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-2xl);
    opacity: 0;
    transform: translateX(-20px);
    transition: all var(--transition-slow);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--spacing-3xl) + 1px);
    width: 24px;
    height: 24px;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-accent-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.timeline-icon {
    font-size: var(--font-size-xs);
}

.timeline-content {
    position: relative;
    background-image: var(--bg-image);
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
    padding: var(--spacing-lg);
}

.timeline-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            rgba(10, 10, 15, 0.85) 0%,
            rgba(10, 10, 15, 0.75) 50%,
            rgba(10, 10, 15, 0.85) 100%);
    z-index: 0;
    transition: background var(--transition-base);
}

.timeline-item:hover .timeline-content::before {
    background: linear-gradient(135deg,
            rgba(10, 10, 15, 0.75) 0%,
            rgba(10, 10, 15, 0.65) 50%,
            rgba(10, 10, 15, 0.75) 100%);
}

.timeline-bg-overlay {
    display: none;
    /* Not needed, using ::before instead */
}

.timeline-content h3 {
    position: relative;
    z-index: 1;
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.timeline-content p {
    position: relative;
    z-index: 1;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.timeline-content p.timeline-highlight {
    color: var(--color-text-primary);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent-primary);
    margin-top: var(--spacing-sm);
}

.timeline-content p.timeline-highlight strong {
    color: var(--color-accent-primary);
}

.timeline-years {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-accent-primary);
    opacity: 0.8;
}

/* Datadog item with purple gradient background */
.timeline-item-datadog .timeline-content {
    background: linear-gradient(135deg,
            #632CA6 0%,
            #9747FF 30%,
            #632CA6 60%,
            #3D1D6E 100%);
    background-size: 200% 200%;
    animation: gradient-shift 10s ease infinite;
}

/* MongoDB item with gradient background */
.timeline-item-mongodb .timeline-content {
    background: linear-gradient(135deg,
            #00684A 0%,
            #00ED64 30%,
            #00684A 60%,
            #023430 100%);
    background-size: 200% 200%;
    animation: gradient-shift 10s ease infinite;
}

@keyframes gradient-shift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* ============================================
   Interests Section
   ============================================ */
.interests-section {
    margin-top: var(--spacing-3xl);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.interests-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.interests-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.interests-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--color-border), transparent);
}

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

.interest-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.interest-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.interest-image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

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

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

.interest-content {
    padding: var(--spacing-lg);
}

.interest-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.interest-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.interest-content strong {
    color: var(--color-accent-primary);
}

/* ============================================
   Projects Section
   ============================================ */
.projects-grid {
    display: grid;
    gap: var(--spacing-2xl);
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.project-card.featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-secondary) 100%);
}

.placeholder-graphic {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

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

.placeholder-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Project Carousel */
.project-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-dots {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.7);
}

.carousel-dot.active {
    background: var(--color-accent-primary);
    width: 24px;
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-image:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 50px;
    height: 50px;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
    transform: scale(0.8);
    transition: transform var(--transition-base);
}

.project-link:hover {
    transform: scale(1);
}

.project-info {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.project-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
}

.icon-link {
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.icon-link:hover {
    color: var(--color-accent-primary);
}

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

.project-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.project-features li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-accent-primary);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.project-cta {
    margin-top: auto;
    align-self: flex-start;
}

.more-projects {
    text-align: center;
    padding-top: var(--spacing-2xl);
    color: var(--color-text-tertiary);
    font-style: italic;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-slow);
}

.more-projects.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Project Showcase (nLight.fit)
   ============================================ */
.project-showcase {
    background: linear-gradient(180deg, rgba(18, 18, 26, 0.95) 0%, rgba(10, 10, 15, 0.98) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-xl);
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

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

.project-showcase:hover {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 60px rgba(0, 212, 255, 0.15), 0 0 120px rgba(124, 58, 237, 0.08);
}

/* Showcase Hero - Image on Top */
.showcase-hero {
    position: relative;
    width: 100%;
    aspect-ratio: 16/7;
    overflow: hidden;
}

.showcase-hero .project-carousel,
.showcase-hero .carousel-slides,
.showcase-hero .carousel-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.showcase-hero .carousel-slide {
    object-fit: cover;
    object-position: top center;
}

.showcase-header-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 3rem 1.5rem 1rem;
    background: linear-gradient(to top, rgba(10, 10, 15, 0.98) 0%, rgba(10, 10, 15, 0.8) 60%, transparent 100%);
}

.showcase-title-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.25rem;
}

.showcase-title-row h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.version-badge {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    background: rgba(0, 212, 255, 0.15);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.showcase-tagline {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin: 0;
}

/* Showcase Content */
.showcase-content {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
}

.stats-bar .stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
}

.stats-bar .val {
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats-bar .lbl {
    font-size: 0.6rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* Two Column Grid */
.showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.showcase-column {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Feature Blocks */
.feature-block {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 0.75rem;
}

.feature-block h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.powered-by {
    font-size: 0.6rem;
    font-weight: 500;
    color: #a78bfa;
    background: rgba(124, 58, 237, 0.15);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    margin-left: auto;
}

/* Compact List */
.compact-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.compact-list li {
    font-size: 0.68rem;
    color: var(--color-text-secondary);
    padding-left: 0.75rem;
    position: relative;
    line-height: 1.4;
}

.compact-list li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
    font-weight: 600;
}

/* Metrics Grid */
.metrics-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.metric {
    font-size: 0.6rem;
    color: var(--color-text-secondary);
    background: rgba(255, 255, 255, 0.04);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Profile Tags */
.profile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.profile-tags span {
    font-size: 0.55rem;
    color: var(--color-accent-primary);
    background: rgba(0, 212, 255, 0.08);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

/* Capabilities List */
.capabilities-list {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.cap-item {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
    font-size: 0.62rem;
    color: var(--color-text-secondary);
    line-height: 1.3;
}

.cap-icon {
    flex-shrink: 0;
}

/* Architecture Strip */
.arch-strip {
    display: flex;
    gap: 0.5rem;
    padding: 0.6rem;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, rgba(0, 212, 255, 0.05) 100%);
    border: 1px solid rgba(124, 58, 237, 0.15);
    border-radius: var(--radius-md);
}

.arch-item {
    flex: 1;
    font-size: 0.58rem;
    color: var(--color-text-secondary);
    line-height: 1.35;
}

.arch-key {
    display: block;
    font-size: 0.55rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.15rem;
}

/* Footer: Tech & CTA */
.showcase-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.tech {
    font-size: 0.6rem;
    font-weight: 500;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.tech.core {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-accent-primary);
    border-color: rgba(0, 212, 255, 0.2);
}

.tech.ai {
    background: rgba(124, 58, 237, 0.12);
    color: #a78bfa;
    border-color: rgba(124, 58, 237, 0.25);
}

.try-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.25rem;
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.try-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--color-accent-glow);
}

/* ============================================
   Skills Section
   ============================================ */
.skills {
    background: var(--color-bg-secondary);
}

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

/* Skill Tiles */
.skill-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
    text-align: center;
    min-height: 140px;
}

.skill-tile.visible {
    opacity: 1;
    transform: translateY(0);
}

.skill-tile:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.1);
}

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

.tile-label {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.tile-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-accent-primary);
    font-weight: 500;
    margin-top: calc(-1 * var(--spacing-sm));
}


/* ============================================
   Contact Section
   ============================================ */
.contact {
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.contact-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.contact-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

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

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.social-btn:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    transform: translateY(-2px);
    background: rgba(0, 212, 255, 0.05);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

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

/* ============================================
   Animations
   ============================================ */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fade-up 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.6s;
}

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

/* ============================================
   MOBILE-FIRST RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .project-card.featured {
        grid-template-columns: 1fr;
    }

    .project-image {
        aspect-ratio: 16/9;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-6xl: 3rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
        --spacing-4xl: 3rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        min-width: 48px;
        min-height: 48px;
        justify-content: center;
        align-items: center;
    }

    .mobile-menu {
        background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    }

    .mobile-nav-links a {
        font-size: var(--font-size-3xl);
        padding: var(--spacing-md) var(--spacing-xl);
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 56px;
    }

    section {
        padding: var(--spacing-3xl) 0;
    }

    .section-title {
        font-size: var(--font-size-2xl);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-2xl);
    }

    .title-accent {
        font-size: var(--font-size-base);
    }

    .hero {
        min-height: 100svh;
        padding-top: 80px;
    }

    .hero-content {
        padding: var(--spacing-lg);
    }

    .hero-name {
        font-size: clamp(2rem, 12vw, 3rem);
        line-height: 1.1;
    }

    .hero-title {
        font-size: clamp(1rem, 4.5vw, 1.5rem);
        margin-bottom: var(--spacing-lg);
        line-height: 1.4;
    }

    .hero-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xl);
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-cta .btn {
        width: auto;
        padding: var(--spacing-md) var(--spacing-xl);
    }

    .hero-cta .btn span {
        display: inline;
    }

    .btn {
        justify-content: center;
        padding: var(--spacing-md) var(--spacing-lg);
        min-height: 44px;
        border-radius: var(--radius-lg);
    }

    .scroll-indicator {
        display: none;
    }

    .about-intro {
        font-size: var(--font-size-lg);
    }

    /* Timeline - Mobile */
    .timeline {
        padding-left: var(--spacing-xl);
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-marker {
        left: calc(-1 * var(--spacing-xl) - 1px);
        width: 22px;
        height: 22px;
    }

    .timeline-content h3 {
        font-size: var(--font-size-lg);
    }

    .timeline-content p {
        font-size: var(--font-size-sm);
    }

    .timeline-content p.timeline-highlight {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .interests-section {
        margin-top: var(--spacing-2xl);
    }

    .interests-title {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-lg);
    }

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

    .interest-card {
        display: flex;
        flex-direction: row;
    }

    .interest-image {
        width: 120px;
        min-width: 120px;
        aspect-ratio: 1;
    }

    .interest-content {
        padding: var(--spacing-md);
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .interest-content h4 {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xs);
    }

    .interest-content p {
        font-size: var(--font-size-xs);
        line-height: 1.5;
    }

    .project-info {
        padding: var(--spacing-lg);
    }

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

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

    .tech-tag {
        font-size: 0.7rem;
        padding: 6px 12px;
    }

    .project-cta {
        align-self: stretch;
        text-align: center;
    }

    /* Project Showcase Mobile */
    .showcase-hero {
        aspect-ratio: 16/9;
    }

    .showcase-header-overlay {
        padding: 2rem 1rem 0.75rem;
    }

    .showcase-title-row h3 {
        font-size: 1.25rem;
    }

    .version-badge {
        font-size: 0.55rem;
        padding: 0.15rem 0.4rem;
    }

    .showcase-tagline {
        font-size: 0.75rem;
    }

    .showcase-content {
        padding: 1rem;
        gap: 0.75rem;
    }

    .stats-bar {
        padding: 0.5rem;
        gap: 0.25rem;
    }

    .stats-bar .val {
        font-size: 0.9rem;
    }

    .stats-bar .lbl {
        font-size: 0.5rem;
    }

    .showcase-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .showcase-column {
        gap: 0.5rem;
    }

    .feature-block {
        padding: 0.6rem;
    }

    .feature-block h4 {
        font-size: 0.7rem;
        margin-bottom: 0.35rem;
    }

    .compact-list li {
        font-size: 0.62rem;
    }

    .metrics-grid {
        gap: 0.2rem;
    }

    .metric {
        font-size: 0.55rem;
        padding: 0.15rem 0.35rem;
    }

    .profile-tags span {
        font-size: 0.5rem;
        padding: 0.1rem 0.3rem;
    }

    .cap-item {
        font-size: 0.58rem;
    }

    .arch-strip {
        flex-direction: column;
        gap: 0.35rem;
        padding: 0.5rem;
    }

    .arch-item {
        font-size: 0.55rem;
    }

    .arch-key {
        font-size: 0.5rem;
        display: inline;
        margin-right: 0.3rem;
    }

    .showcase-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .tech-stack {
        justify-content: center;
    }

    .tech {
        font-size: 0.55rem;
        padding: 0.15rem 0.4rem;
    }

    .try-btn {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1rem;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .skill-tile {
        padding: var(--spacing-md);
        min-height: 100px;
        gap: var(--spacing-sm);
    }

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

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

    .tile-subtitle {
        font-size: var(--font-size-xs);
    }

    .social-links {
        flex-direction: row;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }

    .social-link {
        flex: 1;
        min-width: 140px;
        max-width: 160px;
        min-height: 100px;
    }

    .social-link svg {
        width: 32px;
        height: 32px;
    }

    .contact-cta {
        width: 100%;
        max-width: 320px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-name {
        font-size: clamp(1.75rem, 11vw, 2.5rem);
    }

    .hero-title {
        font-size: clamp(0.9rem, 4vw, 1.25rem);
    }

    .project-info {
        padding: var(--spacing-md);
    }

    .placeholder-icon {
        font-size: 3rem;
    }

    .social-links {
        flex-direction: column;
        align-items: center;
    }

    .social-link {
        width: 100%;
        max-width: 280px;
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-md);
        min-height: 64px;
    }
}

/* Extra Small */
@media (max-width: 375px) {
    .hero-name {
        font-size: 1.6rem;
    }

    .hero-title {
        font-size: 0.85rem;
    }

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

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .project-card:hover {
        transform: none;
        box-shadow: none;
    }

    .skill-tile:hover {
        transform: none;
    }

    .social-link:hover {
        transform: none;
    }

    .btn-primary:hover {
        transform: none;
    }

    .project-card:active {
        border-color: var(--color-accent-primary);
        transform: scale(0.99);
    }

    .btn:active {
        transform: scale(0.97);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

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

    .animate-fade-up {
        opacity: 1;
        transform: none;
    }

    .timeline-item,
    .project-card,
    .skill-tile,
    .contact-content,
    .more-projects {
        opacity: 1;
        transform: none;
    }
}

/* Safe Area Insets */
@supports (padding: env(safe-area-inset-top)) {
    .navbar {
        padding-top: calc(var(--spacing-lg) + env(safe-area-inset-top));
    }

    .navbar.scrolled {
        padding-top: calc(var(--spacing-md) + env(safe-area-inset-top));
    }

    .mobile-menu {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }

    .footer {
        padding-bottom: calc(var(--spacing-2xl) + env(safe-area-inset-bottom));
    }
}