/* Design tokens */
:root {
  --bg: #0f1111;
  --bg-soft: #151818;
  --panel: #1b1f1e;
  --text: #f5f1e8;
  --muted: #b9b2a5;
  --accent: #f28b30;
  --accent-soft: #f2b179;
  --teal: #2fb59f;
  --line: rgba(245, 241, 232, 0.12);
  --shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

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

/* Base typography and background */
body {
  font-family: "Space Grotesk", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Layered atmospheric background */
.page-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(47, 181, 159, 0.2), transparent 50%),
    radial-gradient(circle at 90% 10%, rgba(242, 139, 48, 0.18), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(242, 177, 121, 0.18), transparent 55%),
    linear-gradient(140deg, #0c0f10 0%, #121615 55%, #171a19 100%);
  z-index: -1;
}

/* Sticky navigation bar */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(15, 17, 17, 0.8);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 7vw;
  gap: 24px;
}

.nav-toggle {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  display: none;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
}

.nav-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.cta {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--teal);
  color: #071312;
  font-weight: 600;
}

/* Main content spacing */
main {
  padding: 40px 7vw 80px;
}

.section {
  margin: 80px 0;
}

/* Hero layout */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--accent-soft);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.6rem, 4vw, 4rem);
  line-height: 1.05;
  margin-bottom: 18px;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.primary,
.ghost {
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary {
  background: var(--accent);
  color: #1a120a;
  box-shadow: 0 14px 30px rgba(242, 139, 48, 0.25);
}

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

.primary:hover,
.ghost:hover {
  transform: translateY(-2px);
}

.hero-metrics {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-metrics div {
  background: var(--panel);
  padding: 14px 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  min-width: 150px;
}

.metric {
  font-size: 1.4rem;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}

.label {
  color: var(--muted);
  font-size: 0.85rem;
}

.hero-panel {
  display: grid;
  gap: 22px;
}

.panel-card {
  background: var(--panel);
  padding: 26px;
  border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.panel-card h2 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.panel-card ul {
  list-style: none;
  display: grid;
  gap: 8px;
  color: var(--muted);
}


.section-title {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.section-title h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
}

.section-title p {
  color: var(--muted);
  max-width: 460px;
}

.skills-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.skill-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
  display: grid;
  gap: 16px;
}

.skill-card p {
  color: var(--muted);
}

.skill-meter {
  display: flex;
  gap: 6px;
}

.skill-meter span {
  width: 18px;
  height: 6px;
  border-radius: 999px;
  background: rgba(245, 241, 232, 0.2);
}

.skill-meter span.on {
  background: var(--accent);
}

.project-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.filter-btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.filter-btn.is-active,
.filter-btn:hover {
  color: var(--text);
  border-color: rgba(242, 139, 48, 0.4);
  transform: translateY(-1px);
}

/* Section grids */
.about-grid,
.focus-grid,
.projects-grid,
.tools-grid,
.cert-grid {
  display: grid;
  gap: 22px;
}

.about-grid,
.focus-grid,
.tools-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.projects-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.cert-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Cards */
.about-card,
.focus-card,
.project-card,
.tool-card,
.cert-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}

.focus-card ul,
.panel-card ul {
  list-style: none;
}

.focus-card ul li,
.panel-card ul li {
  position: relative;
  padding-left: 18px;
}

.focus-card ul li::before,
.panel-card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.project-header h3 {
  min-width: 0;
  word-break: break-word;
}

.project-header span {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.85rem;
  color: var(--accent-soft);
}

.project-links a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
}

.case-study-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.case-study {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px;
  display: grid;
  gap: 18px;
}

.case-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-soft);
  font-weight: 600;
  font-size: 0.9rem;
}

.case-body {
  display: grid;
  gap: 14px;
}

.case-block h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.case-block p {
  color: var(--muted);
}

.notes-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.note-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
  display: grid;
  gap: 12px;
}

.note-card p {
  color: var(--muted);
}

.note-card a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
}

.docs-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.doc-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
  display: grid;
  gap: 12px;
}

.doc-card p {
  color: var(--muted);
}

.doc-card a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
}

.cert-card.thm-card {
  overflow: hidden;
}

.thm-badge-wrap {
  width: 100%;
  overflow: hidden;
  border-radius: 14px;
  background: var(--bg-soft);
}

.thm-badge {
  display: block;
  border: none;
  background: transparent;
}


.timeline {
  display: grid;
  gap: 26px;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 18px;
  align-items: flex-start;
}

.timeline-marker {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  margin: 6px 0 0 9px;
  box-shadow: 0 0 0 6px rgba(242, 139, 48, 0.15);
}

.timeline-content {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px 22px;
}

.timeline-content p {
  color: var(--muted);
  margin: 8px 0 12px;
}

.timeline-content ul {
  list-style: none;
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.timeline-content li {
  position: relative;
  padding-left: 18px;
}

.timeline-content li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
}

.tool-card h3,
.about-card h3,
.focus-card h3 {
  margin-bottom: 10px;
}

.tool-card p,
.about-card p,
.focus-card li,
.project-card p {
  color: var(--muted);
}

.contact-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.contact-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer {
  text-align: center;
  padding: 30px 7vw 50px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* Scroll reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-wrap: wrap;
    align-items: center;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-links {
    width: 100%;
    flex-direction: column;
    gap: 12px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .nav-links.is-open {
    max-height: 320px;
  }

}

@media (max-width: 640px) {
  body {
    font-size: 1.04rem;
  }

  main {
    padding: 32px 6vw 64px;
  }

  .section {
    margin: 60px 0;
  }

  .hero-metrics div {
    padding: 12px 16px;
  }

  .metric {
    font-size: 1.2rem;
  }

  .hero-actions,
  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-metrics div {
    width: 100%;
  }

  .project-filter {
    gap: 8px;
  }


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

  .timeline-item {
    grid-template-columns: 22px minmax(0, 1fr);
  }

}

@media (max-width: 520px) {
  .project-header {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}