/* ===================================
   CSS Variables & Base Styles
   =================================== */

:root {
  /* Colors - Warm charcoal with amber accent */
  --bg-primary: #0f0f0f;
  --bg-secondary: #161616;
  --bg-elevated: #1a1a1a;
  --text-primary: #fafafa;
  --text-secondary: #a1a1a1;
  --text-muted: #6b6b6b;
  --accent: #e8a849;
  --accent-dim: #b8842e;
  --border: #2a2a2a;
  --border-light: #333333;

  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Instrument Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 10rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

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

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

/* Noise texture overlay */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

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

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

ul {
  list-style: none;
}

/* ===================================
   Navigation
   =================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, var(--bg-primary) 0%, transparent 100%);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  transition: color 0.3s var(--ease-out);
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s var(--ease-out);
  position: relative;
}

.nav-links a:not(.nav-cta):hover {
  color: var(--text-primary);
}

.nav-links a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 0.625rem 1.25rem;
  background: var(--accent);
  color: var(--bg-primary) !important;
  border-radius: 100px;
  font-weight: 600;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 168, 73, 0.25);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg);
  position: relative;
}

.hero-content {
  max-width: 900px;
}

.hero-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: var(--space-md);
  font-weight: 600;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 12vw, 9rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: fadeUp 0.8s var(--ease-out) forwards;
}

.hero-title .line:nth-child(1) {
  animation-delay: 0.3s;
}

.hero-title .line:nth-child(2) {
  animation-delay: 0.45s;
}

.hero-title .accent {
  color: var(--accent);
  font-style: italic;
}

.hero-title .alias-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  font-style: italic;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-top: var(--space-sm);
  opacity: 0;
  transform: translateY(10px);
  animation: fadeUp 0.6s var(--ease-out) 0.7s forwards;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.7;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero-subtitle em {
  color: var(--text-primary);
  font-style: normal;
  font-weight: 500;
}

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s var(--ease-out) 0.8s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 100px;
  transition: all 0.3s var(--ease-out);
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 255, 255, 0.15);
}

.btn-ghost {
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
}

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

.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  opacity: 0;
  animation: fadeIn 0.8s var(--ease-out) 1.2s forwards;
}

.scroll-line {
  width: 40px;
  height: 1px;
  background: var(--border-light);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform: translateX(-100%);
  animation: scrollLine 2s var(--ease-in-out) infinite;
}

/* ===================================
   Sections
   =================================== */

.section {
  padding: var(--space-3xl) var(--space-lg);
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-weight: 600;
  display: block;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.section-desc {
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  font-size: 1.125rem;
}

/* ===================================
   Work / Projects
   =================================== */

.work {
  background: var(--bg-secondary);
}

.projects {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
}

.project {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--border);
}

.project:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.project-number {
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--border-light);
  line-height: 1;
  letter-spacing: -0.03em;
}

.project-content {
  max-width: 700px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.project-tags span {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.375rem 0.75rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
}

.project-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.project-desc {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.project-features {
  margin-bottom: var(--space-lg);
  padding-left: 1.25rem;
}

.project-features li {
  position: relative;
  color: var(--text-secondary);
  padding: 0.375rem 0;
  padding-left: 1rem;
  font-size: 0.9375rem;
}

.project-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.875rem;
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
}

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
}

.project-stack span {
  font-size: 0.8125rem;
  padding: 0.5rem 1rem;
  background: rgba(232, 168, 73, 0.1);
  border: 1px solid rgba(232, 168, 73, 0.2);
  border-radius: 6px;
  color: var(--accent);
  font-weight: 500;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  padding-bottom: 2px;
  border-bottom: 2px solid var(--accent);
  transition: gap 0.3s var(--ease-out);
}

.project-link:hover {
  gap: 0.75rem;
}

.project-link svg {
  transition: transform 0.3s var(--ease-out);
}

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

/* ===================================
   About Section
   =================================== */

.about-content {
  display: grid;
  gap: var(--space-2xl);
}

.about-text {
  max-width: 700px;
}

.about-lead {
  font-size: 1.5rem;
  line-height: 1.6;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

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

.about-stats {
  display: flex;
  gap: var(--space-2xl);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.about-skills h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-xl);
}

.skill-group h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.skill-group ul li {
  color: var(--text-secondary);
  padding: 0.375rem 0;
  font-size: 0.9375rem;
}

/* ===================================
   Contact Section
   =================================== */

.contact {
  background: var(--bg-secondary);
  text-align: center;
}

.contact .section-header {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-content {
  max-width: 900px;
  margin: 0 auto;
}

.contact-lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

.contact-services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  text-align: left;
}

.service {
  padding: var(--space-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.service:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
}

.service h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.service p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.contact-cta {
  padding-top: var(--space-xl);
}

.contact-email {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--accent);
  display: inline-block;
  position: relative;
  transition: color 0.3s var(--ease-out);
}

.contact-email::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease-out);
}

.contact-email:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.contact-hint {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ===================================
   Footer
   =================================== */

.footer {
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
}

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

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===================================
   Animations
   =================================== */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scrollLine {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

/* Intersection Observer animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

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

@media (max-width: 768px) {
  .nav {
    padding: var(--space-sm) var(--space-md);
  }

  .nav-links {
    gap: var(--space-md);
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .hero {
    padding: var(--space-2xl) var(--space-md);
  }

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

  .section {
    padding: var(--space-2xl) var(--space-md);
  }

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

  .project-number {
    font-size: 3rem;
  }

  .about-stats {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .stat-value {
    font-size: 2.5rem;
  }

  .contact-services {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

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

  .section-title {
    font-size: 2rem;
  }

  .project-title {
    font-size: 1.75rem;
  }
}