/* ============================================
   PORTFOLIO - REFINED EDITORIAL AESTHETIC
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Refined Dark Palette */
    --color-bg: #0d0d0d;
    --color-bg-elevated: #161616;
    --color-bg-card: #1a1a1a;
    --color-bg-hover: #222222;

    /* Text Colors */
    --color-text: #f5f5f5;
    --color-text-secondary: #888888;
    --color-text-muted: #555555;

    /* Accent Colors - Warm Amber/Gold */
    --color-accent: #d4a853;
    --color-accent-light: #e8c97a;
    --color-accent-dark: #b8943f;

    /* Secondary Accent - Terracotta */
    --color-secondary: #c17f59;
    --color-secondary-light: #d9a082;

    /* Subtle Colors */
    --color-border: #2a2a2a;
    --color-border-light: #333333;

    /* Typography - Vercel Style */
    --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Geist Mono', 'SF Mono', Consolas, monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    --spacing-2xl: 8rem;

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-base: 0.4s var(--ease-out);
    --transition-slow: 0.6s var(--ease-out);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(212, 168, 83, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(212, 168, 83, 0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes grain {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-5%, -10%); }
    20% { transform: translate(-15%, 5%); }
    30% { transform: translate(7%, -25%); }
    40% { transform: translate(-5%, 25%); }
    50% { transform: translate(-15%, 10%); }
    60% { transform: translate(15%, 0%); }
    70% { transform: translate(0%, 15%); }
    80% { transform: translate(3%, 35%); }
    90% { transform: translate(-10%, 10%); }
}

/* ============================================
   BASE STYLES
   ============================================ */

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Film grain overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
}

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

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

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

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 13, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(13, 13, 13, 0.95);
    border-bottom-color: var(--color-border);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    height: 72px;
}

.logo {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

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

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

.nav-links {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.625rem 1rem;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    position: relative;
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
}

.nav-links a:not(.lang-switch):hover {
    color: var(--color-text);
    background: var(--color-bg-elevated);
}

.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: var(--spacing-sm);
    padding: 0.5rem 1rem !important;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.8rem !important;
    color: var(--color-text-secondary) !important;
    background: transparent;
    transition: var(--transition-fast);
}

.lang-switch:hover {
    border-color: var(--color-accent);
    color: var(--color-accent) !important;
    background: rgba(212, 168, 83, 0.05);
}

.lang-switch svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(212, 168, 83, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border-light);
}

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

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    position: relative;
    overflow: hidden;
}

/* Gradient orbs */
.hero::before {
    content: '';
    position: absolute;
    top: 10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
    pointer-events: none;
    animation: float 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(193, 127, 89, 0.06) 0%, transparent 70%);
    pointer-events: none;
    animation: float 10s ease-in-out infinite reverse;
}

.hero-content {
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 1.25rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeUp 0.8s var(--ease-out) forwards;
    animation-delay: 0.1s;
}

.hero-badge-icon {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse-glow 2s infinite;
}

.hero-title {
    font-family: var(--font-sans);
    font-size: clamp(2.75rem, 7vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    letter-spacing: -0.04em;
    opacity: 0;
    animation: fadeUp 0.8s var(--ease-out) forwards;
    animation-delay: 0.2s;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    max-width: 600px;
    opacity: 0;
    animation: fadeUp 0.8s var(--ease-out) forwards;
    animation-delay: 0.3s;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    opacity: 0;
    animation: fadeUp 0.8s var(--ease-out) forwards;
    animation-delay: 0.4s;
}

/* ============================================
   SECTION STYLES
   ============================================ */

.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

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

.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.section-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--color-accent);
}

.section-title {
    font-family: var(--font-sans);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.section-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    margin-top: var(--spacing-sm);
    max-width: 550px;
    line-height: 1.7;
    font-weight: 300;
}

/* ============================================
   PROJECTS SECTION
   ============================================ */

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

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

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-light);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 0 1px var(--color-border-light);
}

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

.project-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

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

.project-card:hover .project-image img {
    transform: scale(1.08);
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg-card) 100%);
    color: var(--color-text-muted);
    position: relative;
    overflow: hidden;
}

.project-image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(135deg, transparent 40%, rgba(212, 168, 83, 0.05) 50%, transparent 60%);
    background-size: 200% 200%;
    animation: shimmer 3s ease-in-out infinite;
}

.project-image-placeholder svg {
    width: 48px;
    height: 48px;
    opacity: 0.4;
    transition: var(--transition-base);
}

.project-card:hover .project-image-placeholder svg {
    opacity: 0.6;
    transform: scale(1.1);
    color: var(--color-accent);
}

/* Project Screenshot Style */
.project-screenshot {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-elevated);
}

.project-screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 0.5s ease, filter 0.3s ease;
    filter: brightness(0.9);
}

.project-card:hover .project-screenshot img {
    transform: scale(1.08);
    filter: brightness(1);
}

.project-screenshot::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, var(--color-bg-card) 0%, transparent 100%);
    pointer-events: none;
}

.project-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-family: var(--font-sans);
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    letter-spacing: -0.02em;
    transition: color var(--transition-fast);
}

.project-card:hover .project-title {
    color: var(--color-accent);
}

.project-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
    font-weight: 300;
}

.project-features {
    list-style: none;
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.project-features li {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    padding: 0.375rem 0;
    padding-left: 1.25rem;
    position: relative;
    transition: var(--transition-fast);
    font-weight: 400;
}

.project-features li:hover {
    color: var(--color-text);
    transform: translateX(4px);
}

.project-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.85rem;
    width: 5px;
    height: 5px;
    background: var(--color-accent);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.project-features li:hover::before {
    box-shadow: 0 0 8px var(--color-accent);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.3rem 0.625rem;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
    letter-spacing: 0.02em;
}

.tech-tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.project-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: 1px solid var(--color-border-light);
    color: var(--color-text);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition-base);
}

.project-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

.project-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.project-link:hover svg {
    transform: translate(2px, -2px);
}

/* ============================================
   SKILLS SECTION
   ============================================ */

.skills-section {
    background: var(--color-bg-elevated);
    position: relative;
}

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

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.skill-category {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: var(--transition-base);
    position: relative;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: var(--spacing-md);
    right: var(--spacing-md);
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-light);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
}

.skill-category:hover::before {
    opacity: 1;
}

.skill-category-title {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.75rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
    padding: 0.25rem 0;
    font-weight: 400;
}

.skill-item:hover {
    color: var(--color-text);
    transform: translateX(4px);
}

.skill-item::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--color-text-muted);
    border-radius: 50%;
    flex-shrink: 0;
    transition: var(--transition-fast);
}

.skill-item:hover::before {
    background: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent);
}

.skill-item.highlight {
    color: var(--color-text);
    font-weight: 500;
}

.skill-item.highlight::before {
    background: var(--color-accent);
    width: 6px;
    height: 6px;
}

/* Rails Way - Ruby Red Special Style */
.skill-item.ruby-way {
    color: #CC342D;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(204, 52, 45, 0.1) 0%, rgba(204, 52, 45, 0.05) 100%);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(204, 52, 45, 0.2);
    margin-top: 0.5rem;
    position: relative;
    overflow: hidden;
}

.skill-item.ruby-way::before {
    display: none;
}

.skill-item.ruby-way:hover {
    background: linear-gradient(135deg, rgba(204, 52, 45, 0.15) 0%, rgba(204, 52, 45, 0.08) 100%);
    border-color: rgba(204, 52, 45, 0.4);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(204, 52, 45, 0.2);
}

.skill-item.ruby-way .ruby-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.skill-item.ruby-way::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 30px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(204, 52, 45, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.skill-item.ruby-way:hover::after {
    opacity: 1;
}

/* ============================================
   EXPERTISE SECTION
   ============================================ */

.expertise-section {
    background: var(--color-bg);
    padding: var(--spacing-lg) 0;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.expertise-card {
    background: linear-gradient(145deg, var(--color-bg-card) 0%, var(--color-bg-elevated) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--expertise-accent, var(--color-accent));
    opacity: 0.8;
}

.expertise-card:hover {
    transform: translateY(-4px);
    border-color: var(--expertise-accent, var(--color-accent));
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3),
                0 0 20px color-mix(in srgb, var(--expertise-accent, var(--color-accent)) 20%, transparent);
}

.expertise-card.rails {
    --expertise-accent: #CC342D;
}

.expertise-card.react {
    --expertise-accent: #61DAFB;
}

.expertise-card.ai {
    --expertise-accent: #10B981;
}

.expertise-card.java {
    --expertise-accent: #F89820;
}

.expertise-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.expertise-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--expertise-accent, var(--color-accent)) 15%, transparent);
    border-radius: var(--radius-md);
    color: var(--expertise-accent, var(--color-accent));
}

.expertise-icon svg {
    width: 18px;
    height: 18px;
}

.expertise-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--expertise-accent, var(--color-accent));
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.expertise-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.expertise-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    transition: var(--transition-base);
}

.expertise-tag:hover {
    border-color: var(--expertise-accent, var(--color-accent));
    color: var(--color-text);
    background: color-mix(in srgb, var(--expertise-accent, var(--color-accent)) 10%, transparent);
}

.expertise-tag svg {
    width: 12px;
    height: 12px;
    opacity: 0.6;
}

@media (max-width: 1200px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .expertise-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-section {
    background: var(--color-bg);
    position: relative;
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-content h3 {
    font-family: var(--font-sans);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    letter-spacing: -0.03em;
}

.about-content p {
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 300;
}

.about-content strong {
    color: var(--color-text);
    font-weight: 500;
}

.credentials {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.credential {
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    min-width: 140px;
}

.credential:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.credential-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-bottom: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.credential-value {
    font-family: var(--font-sans);
    font-weight: 600;
    color: var(--color-text);
    font-size: 1rem;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-section {
    background: var(--color-bg-elevated);
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: -200px;
    left: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.contact-section::after {
    content: '';
    position: absolute;
    bottom: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(193, 127, 89, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

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

.contact-title {
    font-family: var(--font-sans);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    letter-spacing: -0.03em;
}

.contact-text {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    font-weight: 300;
}

.contact-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.contact-link {
    padding: 1rem 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.contact-link:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: var(--color-bg);
    box-shadow: 0 12px 30px rgba(212, 168, 83, 0.25);
}

.contact-link svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.contact-link:hover svg {
    transform: scale(1.1);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: var(--spacing-lg) 0;
    background: var(--color-bg);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    letter-spacing: 0.01em;
}

.footer p a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

/* ============================================
   SCROLL REVEAL ANIMATION
   ============================================ */

.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 0.8s var(--ease-out),
        transform 0.8s var(--ease-out);
}

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

/* Staggered animation delays */
.projects-grid .reveal-on-scroll:nth-child(1) { transition-delay: 0.05s; }
.projects-grid .reveal-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.projects-grid .reveal-on-scroll:nth-child(3) { transition-delay: 0.15s; }
.projects-grid .reveal-on-scroll:nth-child(4) { transition-delay: 0.2s; }
.projects-grid .reveal-on-scroll:nth-child(5) { transition-delay: 0.25s; }
.projects-grid .reveal-on-scroll:nth-child(6) { transition-delay: 0.3s; }

.skills-grid .reveal-on-scroll:nth-child(1) { transition-delay: 0.05s; }
.skills-grid .reveal-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.skills-grid .reveal-on-scroll:nth-child(3) { transition-delay: 0.15s; }
.skills-grid .reveal-on-scroll:nth-child(4) { transition-delay: 0.2s; }

.credentials .reveal-on-scroll:nth-child(1) { transition-delay: 0.05s; }
.credentials .reveal-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.credentials .reveal-on-scroll:nth-child(3) { transition-delay: 0.15s; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-2xl: 5rem;
    }

    .nav-links {
        display: none;
    }

    .hero-content {
        text-align: center;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .section-header {
        text-align: center;
    }

    .section-label {
        justify-content: center;
    }

    .section-label::before {
        display: none;
    }

    .section-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

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

    .credentials {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .credential {
        width: 100%;
        max-width: 280px;
    }

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

    .contact-link {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* ============================================
   PROJECT DETAIL PAGE STYLES
   ============================================ */

.project-hero {
    padding-top: 120px;
    padding-bottom: var(--spacing-xl);
    background: var(--color-bg);
    position: relative;
}

.project-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(212, 168, 83, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    transition: var(--transition-fast);
}

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

.back-link svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.back-link:hover svg {
    transform: translateX(-4px);
}

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

.project-hero-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 16px 40px rgba(212, 168, 83, 0.25);
}

.project-hero-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-bg);
}

.project-hero-title {
    font-family: var(--font-sans);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    letter-spacing: -0.03em;
}

.project-hero-tagline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.project-internal-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.project-internal-badge svg {
    width: 16px;
    height: 16px;
}

/* Screenshots Section */
.project-screenshots {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-elevated);
}

.project-section-title {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

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

.screenshot-placeholder {
    aspect-ratio: 16/10;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.screenshot-placeholder:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
}

.screenshot-placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text-muted);
}

.screenshot-placeholder-content svg {
    width: 48px;
    height: 48px;
    opacity: 0.4;
}

.screenshot-placeholder-content span {
    font-size: 0.875rem;
    font-weight: 500;
}

.screenshot-item {
    aspect-ratio: 3/4;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.screenshot-item:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.screenshot-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

/* Carousel */
.carousel {
    position: relative;
    width: 100%;
}

.carousel-container {
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s var(--ease-out);
}

.carousel-slide {
    flex: 0 0 calc(100% / 3);
    padding: 0 0.5rem;
    box-sizing: border-box;
}

.carousel-slide img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    object-position: top;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
    cursor: pointer;
}

.carousel-slide img:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    z-index: 10;
    color: var(--color-text);
}

.carousel-btn:hover:not(:disabled) {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.carousel-btn svg {
    width: 24px;
    height: 24px;
}

.carousel-btn-prev {
    left: -24px;
}

.carousel-btn-next {
    right: -24px;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--spacing-md);
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    background: var(--color-border);
    cursor: pointer;
    transition: var(--transition-fast);
}

.carousel-dot:hover {
    background: var(--color-text-muted);
}

.carousel-dot.active {
    background: var(--color-accent);
    transform: scale(1.3);
}

/* Carousel Responsive */
@media (max-width: 1024px) {
    .carousel-slide {
        flex: 0 0 50%;
    }

    .carousel-btn-prev { left: 8px; }
    .carousel-btn-next { right: 8px; }
}

@media (max-width: 640px) {
    .carousel-slide {
        flex: 0 0 100%;
        padding: 0;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
    }

    .carousel-btn svg {
        width: 20px;
        height: 20px;
    }
}

/* Project Description Section */
.project-description-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.project-description-content {
    max-width: 800px;
    margin: 0 auto;
}

.project-detailed-description {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    font-weight: 300;
}

.project-detailed-description p {
    margin-bottom: var(--spacing-sm);
}

/* Features Section */
.project-features-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-elevated);
}

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

.feature-detail-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: var(--transition-base);
}

.feature-detail-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.feature-detail-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature-detail-title::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

.feature-detail-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
}

/* Tech Section */
.project-tech-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.tech-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

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

.tech-category-title {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.75rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.tech-category-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-detail-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 0.375rem 0.75rem;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Challenges Section */
.project-challenges-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-elevated);
}

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

.challenge-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border-left: 3px solid var(--color-accent);
}

.challenge-title {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

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

.challenge-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.challenge-problem .challenge-label {
    background: rgba(220, 38, 38, 0.1);
    color: #f87171;
}

.challenge-solution .challenge-label {
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
}

.challenge-problem p,
.challenge-solution p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
}

/* Project CTA Section */
.project-cta-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
}

.project-cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.project-cta-content h2 {
    font-family: var(--font-sans);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-bg);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.project-cta-content p {
    color: rgba(13, 13, 13, 0.8);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.project-cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.project-cta-buttons .btn-primary {
    background: var(--color-bg);
    color: var(--color-accent);
    border-color: var(--color-bg);
}

.project-cta-buttons .btn-primary:hover {
    background: var(--color-bg-elevated);
    border-color: var(--color-bg-elevated);
}

.project-cta-buttons .btn-secondary {
    background: transparent;
    color: var(--color-bg);
    border-color: var(--color-bg);
}

.project-cta-buttons .btn-secondary:hover {
    background: var(--color-bg);
    color: var(--color-accent);
}

/* Project Page Responsive */
@media (max-width: 1024px) {
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .challenge-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .project-hero {
        padding-top: 100px;
    }

    .project-hero-icon {
        width: 64px;
        height: 64px;
    }

    .project-hero-icon svg {
        width: 32px;
        height: 32px;
    }

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

    .features-detail-grid {
        grid-template-columns: 1fr;
    }

    .tech-detail-grid {
        grid-template-columns: 1fr;
    }

    .project-cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .project-cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ============================================
   LIGHTBOX STYLES
   ============================================ */

.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox[hidden] {
    display: none;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    cursor: pointer;
}

.lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-image {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    color: white;
    z-index: 10;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.lightbox-close svg {
    width: 28px;
    height: 28px;
}

.lightbox-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    color: white;
    z-index: 10;
}

.lightbox-nav:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.lightbox-nav svg {
    width: 28px;
    height: 28px;
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-counter {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    z-index: 10;
}

/* Lightbox Responsive */
@media (max-width: 768px) {
    .lightbox-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }

    .lightbox-close svg {
        width: 24px;
        height: 24px;
    }

    .lightbox-nav {
        width: 44px;
        height: 44px;
    }

    .lightbox-nav svg {
        width: 24px;
        height: 24px;
    }

    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }

    .lightbox-image {
        max-width: 95vw;
        max-height: 80vh;
    }
}