/* ==========================================================
   Marc Edlinger — Portfolio
   Dark, technical aesthetic. Near-black background, acid-green
   accent, monospace display + clean grotesk body.
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #0B0F0D;
  --bg-raised: #10140F;
  --ink: #E7EEE8;
  --ink-soft: #8FA095;
  --ink-faint: #55645A;
  --accent: #4CFF6E;
  --accent-2: #2FAE4C;
  --accent-soft: #16241A;
  --line: #202822;
  --line-strong: #34423A;
  --radius: 4px;
  --maxw: 780px;
  --maxw-wide: 1080px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
  --space-6: 8rem;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', 'Segoe UI', sans-serif;
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--space-6) var(--space-2);
}

section#projects,
section#experience {
  max-width: var(--maxw-wide);
}

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: var(--accent);
  z-index: 999;
  transition: width 0.1s linear;
}

/* ---------- Nav ---------- */
#nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(11, 15, 13, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--accent);
}

.nav-logo span {
  color: var(--ink-faint);
  font-style: normal;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2vw, 1.9rem);
}

.nav-links a {
  font-size: 0.86rem;
  color: var(--ink-soft);
  padding: 0.3rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-links-cv { margin-left: 0.4rem; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav-social {
  display: flex;
  gap: 0.9rem;
}

.nav-social a {
  color: var(--ink-soft);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-hamburger span {
  display: block;
  height: 1.5px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-menu-overlay {
  display: none;
}

/* ---------- Buttons ---------- */
.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

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

.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

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

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
}

/* ---------- Hero ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(4.5rem, 12vw, 8rem) var(--space-2) var(--space-5);
}

.hero-label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-size: 0.82rem;
  margin-bottom: 1.4rem;
}

.hero-label em { font-style: normal; }

.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  line-height: 1.05;
  margin-bottom: 1.6rem;
}

.hero h1 .highlight {
  font-weight: 600;
  color: var(--ink);
}

.hero-bio {
  max-width: 56ch;
  color: var(--ink-soft);
  font-size: 1.08rem;
  margin-bottom: 2.2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* ---------- Section headers ---------- */
.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: var(--space-4);
}

.section-tag {
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-size: 0.8rem;
  white-space: nowrap;
}

.section-tag em { font-style: normal; }

.section-tag::before { content: '[ '; }
.section-tag::after { content: ' ]'; }

.section-title {
  font-size: clamp(1.7rem, 3vw, 2.15rem);
}

.section-line {
  flex: 1;
  height: 1px;
  background: var(--line);
  margin-left: 0.5rem;
  align-self: center;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-4);
  align-items: start;
}

.about-text {
  font-size: 1.03rem;
  color: var(--ink-soft);
}

.about-text .emph {
  color: var(--accent);
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 0.6rem 1.6rem;
  margin-top: 1.8rem;
}

.tech-item {
  font-size: 0.9rem;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.accent-icon { color: var(--accent); font-size: 0.6rem; }

.about-image img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  filter: grayscale(0.3) contrast(1.05);
}

/* ---------- Education timeline ---------- */
.education-timeline {
  display: flex;
  flex-direction: column;
}

.education-entry {
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

.education-entry:last-child { border-bottom: 1px solid var(--line); }

.education-entry h3 {
  font-size: 1.25rem;
  font-weight: 500;
}

.education-entry h3 span {
  color: var(--ink-soft);
  font-weight: 400;
  font-size: 0.9em;
}

.education-entry .date {
  font-size: 0.85rem;
  color: var(--accent);
  margin: 0.3rem 0 0.7rem;
  font-weight: 600;
}

.education-entry p {
  color: var(--ink-soft);
  margin: 0.3rem 0;
}

.badge {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin: 0.6rem 0.5rem 0 0;
}

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.service-card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.service-icon {
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

.service-card p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin-bottom: 1.1rem;
}

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

.service-tags span,
.exp-tech span,
.project-tech span,
.achievement-tech span {
  font-size: 0.76rem;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

/* ---------- Experience (timeline, replaces old tab UI) ---------- */
.experience-tabs { display: none; } /* legacy tab controls, unused in new layout */

.experience-timeline {
  display: flex;
  flex-direction: column;
}

.experience-entry {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

.experience-entry:last-child { border-bottom: 1px solid var(--line); }

.experience-when {
  font-size: 0.85rem;
  color: var(--ink-faint);
  padding-top: 0.2rem;
}

.experience-when .place {
  display: block;
  color: var(--ink-soft);
  margin-top: 0.3rem;
}

.experience-entry h3 {
  font-size: 1.2rem;
  margin-bottom: 0.2rem;
}

.experience-entry h3 span {
  display: block;
  font-family: 'Inter', sans-serif;
  font-style: normal;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--accent);
  margin-top: 0.2rem;
}

.experience-entry ul {
  margin: 0.8rem 0 1rem;
}

.experience-entry li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.experience-entry li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--ink-faint);
}

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

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

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

.project-image {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  margin-bottom: 1.2rem;
  aspect-ratio: 16/10;
  background: var(--bg-raised);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin-bottom: 0.4rem;
}

.project-name {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.project-desc {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-links a {
  color: var(--ink-soft);
  font-size: 1rem;
  transition: color 0.2s ease;
}

.project-links a:hover { color: var(--accent); }

/* ---------- Achievements ---------- */
.achievements-list {
  display: flex;
  flex-direction: column;
}

.achievement-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

.achievement-row:last-child { border-bottom: 1px solid var(--line); }

.achievement-icon {
  color: var(--accent);
  font-size: 1.1rem;
  padding-top: 0.2rem;
}

.achievement-row h4 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.achievement-row p {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0 0 0.6rem;
}

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

.achievement-meta {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  text-align: right;
}

/* ---------- Skills ---------- */
.skills-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.skills-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1rem;
  font-size: 0.95rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
}

.skills-row:last-child { border-bottom: 1px solid var(--line); }

.skills-row .label {
  color: var(--ink-faint);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: 0.15rem;
}

.skills-row .value { color: var(--ink-soft); }

.skills-row .value span:not(:last-child)::after {
  content: '·';
  margin: 0 0.5rem;
  color: var(--ink-faint);
}

/* ---------- Contact ---------- */
.contact-section {
  text-align: center;
  max-width: 620px;
}

.contact-section .section-tag {
  display: block;
  margin-bottom: 1rem;
}

.contact-section h2 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin-bottom: 1.1rem;
}

.contact-section p {
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}

.contact-meta {
  color: var(--ink-faint);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.contact-section .btn-primary {
  margin-top: 0.6rem;
}

/* ---------- Footer ---------- */
footer {
  text-align: center;
  padding: var(--space-4) var(--space-2) var(--space-5);
  font-size: 0.82rem;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
  margin-top: var(--space-4);
}

footer a {
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-strong);
}

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

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---------- Focus states ---------- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-image { order: -1; max-width: 260px; }
  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .experience-entry { grid-template-columns: 1fr; }
  .experience-when { display: flex; justify-content: space-between; }
  .achievement-row { grid-template-columns: auto 1fr; }
  .achievement-meta { grid-column: 2; text-align: left; margin-top: 0.4rem; }
}

@media (max-width: 700px) {
  .nav-links {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 320px);
    height: 100vh;
    background: var(--bg-raised);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.6rem;
    padding: 0 2.2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -8px 0 30px rgba(0,0,0,0.5);
  }

  .nav-links a { font-size: 1.05rem; }
  .nav-links-cv { margin-left: 0; }

  body.menu-open .nav-links { transform: translateX(0); }

  .mobile-menu-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 90;
  }

  body.menu-open .mobile-menu-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .nav-hamburger { display: flex; }

  body.menu-open .nav-hamburger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  body.menu-open .nav-hamburger span:nth-child(2) { opacity: 0; }
  body.menu-open .nav-hamburger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  .nav-social { display: none; }
}

@media (max-width: 480px) {
  .skills-row { grid-template-columns: 1fr; }
  .skills-row .label { padding-top: 0; }
}