/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* ==========================================================================
   Utilities
   ========================================================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.section-heading {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.section-subtext {
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

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

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

/* Cards on alt sections need contrasting backgrounds */
.section-alt .expertise-card,
.section-alt .service-card,
.section-alt .content-card,
.section-alt .track-card {
  background: var(--bg-tertiary);
}

.section-alt .expertise-tag {
  background: rgba(10, 10, 15, 0.5);
}

.section-alt .track-year {
  background: rgba(10, 10, 15, 0.5);
  -webkit-text-fill-color: initial;
  background-clip: border-box;
  -webkit-background-clip: border-box;
  color: var(--accent-primary);
}

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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.8;
}

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

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

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.nav-cta {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: var(--accent-warm);
  color: #fff;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.nav-cta:hover {
  box-shadow: var(--gradient-warm-glow);
  transform: translateY(-1px);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xl);
  z-index: 99;
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(108, 99, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 212, 170, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(108, 99, 255, 0.08) 0%, transparent 50%);
  animation: meshMove 60s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 750px;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-full);
  background: var(--accent-warm);
  color: #fff;
  font-weight: 600;
  font-size: var(--text-base);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.btn-primary:hover {
  box-shadow: var(--gradient-warm-glow);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-hover);
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--text-base);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.btn-outline:hover {
  border-color: var(--text-tertiary);
  transform: translateY(-2px);
}

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

/* Metrics strip — borderless, subtle */
.about-metrics {
  display: flex;
  justify-content: flex-start;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.about-metric {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.about-metric-number {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1;
}

.about-metric-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

/* About — two-column layout */
.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

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

.about-col p:last-child {
  margin-bottom: 0;
}

.about-col-heading {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
}

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


/* ==========================================================================
   Expertise
   ========================================================================== */

.expertise-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.expertise-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.expertise-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

.expertise-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--gradient-card-glow);
}

.expertise-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.expertise-card h3 {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.expertise-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

/* ==========================================================================
   Track Record
   ========================================================================== */

.track-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.track-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.track-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-xl) var(--space-xl) var(--space-2xl);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.track-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
}

.track-card:hover {
  transform: translateX(4px);
  border-color: var(--border-hover);
}

.track-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  margin-bottom: var(--space-md);
  -webkit-text-fill-color: initial;
  background-clip: border-box;
  -webkit-background-clip: border-box;
  color: var(--accent-primary);
}

.track-card h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.track-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   Services
   ========================================================================== */

.services-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.service-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--gradient-card-glow);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.service-card > p {
  color: var(--text-secondary);
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: var(--space-md);
}

.service-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-md) 0;
  flex-grow: 1;
}

.service-list li {
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 6px 0;
  padding-left: 1.2em;
  position: relative;
  font-size: var(--text-sm);
}

.service-list li::before {
  content: '\203A';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: 700;
}

.service-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  line-height: 1.6;
  margin-bottom: 0;
  flex-grow: 0;
}

/* ==========================================================================
   Content & Media
   ========================================================================== */

.content-header {
  margin-bottom: var(--space-3xl);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.content-card {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.content-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--gradient-card-glow);
}

.content-card-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 10px;
}

.content-card-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--text-secondary);
  transition: fill var(--transition-base);
}

.content-card:hover .content-card-icon svg {
  fill: var(--text-primary);
}

.content-card-body h3 {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.content-card-body p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.content-card-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-warm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.content-card:hover .content-card-link .arrow {
  transform: translateX(4px);
}

.content-card-link .arrow {
  transition: transform var(--transition-base);
}

.content-scope {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-align: center;
  margin-top: var(--space-2xl);
  line-height: 1.7;
  letter-spacing: 0.02em;
}

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

.contact {
  text-align: center;
}

.contact-content {
  max-width: 720px;
  margin: 0 auto;
}

.contact .section-subtext {
  margin: 0 auto var(--space-2xl);
}

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

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-hover);
  font-weight: 500;
  font-size: var(--text-base);
  transition: border-color var(--transition-base), transform var(--transition-base), background var(--transition-base);
}

.contact-btn:hover {
  border-color: var(--text-tertiary);
  transform: translateY(-2px);
  background: var(--bg-secondary);
}

.contact-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.contact-btn.linkedin:hover {
  border-color: #0A66C2;
  color: #0A66C2;
}

.contact-btn.youtube:hover {
  border-color: #FF0000;
  color: #FF0000;
}

.contact-btn.spotify:hover {
  border-color: #1DB954;
  color: #1DB954;
}

.contact-btn.github:hover {
  border-color: #E8E8ED;
}

.contact-btn.medium:hover {
  border-color: #00D4AA;
  color: #00D4AA;
}

/* Contact section button colors on alt background */
.section-alt .contact-btn {
  border-color: var(--border);
}

.section-alt .contact-btn:hover {
  background: var(--bg-tertiary);
}

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

.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border);
}

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

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

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

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

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

.footer-links a:hover {
  color: var(--text-secondary);
}

/* ==========================================================================
   Scroll Reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

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

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-bg {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}