/* ===========================================================
   Matěj Vítek — Portfolio
   =========================================================== */

:root {
  --bg: #FFF8F0;
  --bg-alt: #FFF1E3;
  --ink: #17181C;
  --ink-soft: #4A4A52;
  --muted: #7A7A82;
  --accent: #FF5A36;      /* coral */
  --accent-ink: #B23A1F;
  --accent-2: #1E9E8F;    /* teal */
  --accent-3: #FFC94A;    /* yellow */
  --accent-4: #6C63FF;    /* violet */
  --line: #E8DFD2;
  --dark: #16181D;
  --dark-2: #21242B;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(23, 24, 28, 0.08);
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

.section-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- decorative blobs ---------- */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .35;
  z-index: 0;
  pointer-events: none;
}
.blob-1 {
  width: 480px; height: 480px;
  background: var(--accent-3);
  top: -160px; right: -160px;
}
.blob-2 {
  width: 420px; height: 420px;
  background: var(--accent-2);
  bottom: 10%; left: -180px;
  opacity: .25;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 248, 240, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
}
.logo .dot { color: var(--accent); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-menu a {
  position: relative;
  padding: 4px 2px;
  transition: color .2s ease;
}
.nav-menu a:not(.nav-cta):after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  height: 2px; width: 0;
  background: var(--accent);
  transition: width .25s ease;
}
.nav-menu a:not(.nav-cta):hover:after { width: 100%; }
.nav-cta {
  background: var(--dark);
  color: var(--bg);
  padding: 9px 18px;
  border-radius: 999px;
  transition: transform .2s ease, background .2s ease;
}
.nav-cta:hover { background: var(--accent); transform: translateY(-1px); }

.header-actions { display: flex; align-items: center; gap: 14px; }

#lang-toggle {
  border: 1.5px solid var(--ink);
  background: transparent;
  border-radius: 999px;
  padding: 6px 14px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  letter-spacing: .02em;
  display: flex;
  gap: 4px;
}
#lang-toggle .lang-sep { opacity: .4; }
#lang-toggle .lang-en, #lang-toggle .lang-cs { transition: opacity .2s ease; }
body.lang-en #lang-toggle .lang-en { color: var(--accent); }
body.lang-cs #lang-toggle .lang-cs { color: var(--accent); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px; height: 34px;
  border: none;
  background: transparent;
  cursor: pointer;
}
.hamburger span {
  width: 100%; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 90px 32px 60px;
  z-index: 1;
}
.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: rgba(255, 90, 54, 0.12);
  padding: 6px 14px;
  border-radius: 999px;
  margin: 0 0 20px;
}
.hero-text h1 {
  font-size: clamp(2.6rem, 5.2vw, 4.2rem);
  margin-bottom: 20px;
}
.hero-text h1 .highlight {
  color: var(--accent);
  font-style: italic;
}
.hero-sub {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 16px;
  max-width: 34ch;
}
.hero-body {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 90, 54, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(255, 90, 54, 0.4); }
.btn-ghost {
  border: 1.5px solid var(--ink);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--bg); transform: translateY(-2px); }

.hero-photo { position: relative; justify-self: center; }
.photo-frame {
  width: min(320px, 80vw);
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 6px solid var(--dark);
  box-shadow: var(--shadow);
  transform: rotate(3deg);
  background: var(--dark);
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }

.photo-tag {
  position: absolute;
  background: var(--dark);
  color: var(--bg);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.photo-tag-1 {
  top: 8%;
  left: -14px;
  transform: rotate(-6deg);
  background: var(--accent-2);
  color: #fff;
}
.photo-tag-2 {
  bottom: 6%;
  right: -18px;
  transform: rotate(4deg);
  background: var(--accent-3);
  color: var(--dark);
}

.scroll-cue {
  display: flex;
  justify-content: center;
  margin-top: 60px;
}
.scroll-cue span {
  width: 1px; height: 46px;
  background: linear-gradient(var(--muted), transparent);
  display: block;
  animation: scrollcue 1.8s ease-in-out infinite;
}
@keyframes scrollcue {
  0% { transform: scaleY(0.4); opacity: .2; }
  50% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0.4); opacity: .2; }
}

/* ---------- generic section ---------- */
.section {
  position: relative;
  z-index: 1;
  padding: 100px 0;
}
.kicker {
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 14px;
}
.kicker-light { color: var(--accent-3); }
.section h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  max-width: 18ch;
  margin-bottom: 28px;
}
.lead {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0 0 18px;
}
.lead-light { color: #C9CCD6; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- about ---------- */
.about-facts {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.fact { display: flex; flex-direction: column; }
.fact-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--accent);
  line-height: 1;
}
.fact-label {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 16ch;
  margin-top: 6px;
}

/* ---------- experience timeline ---------- */
.timeline {
  position: relative;
  margin-top: 20px;
  padding-left: 30px;
  border-left: 2px solid var(--line);
}
.timeline-item {
  position: relative;
  padding: 0 0 48px 30px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker {
  position: absolute;
  left: -39px;
  top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
}
.timeline-date {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin: 0 0 6px;
}
.timeline-content h3 {
  font-size: 1.35rem;
  margin-bottom: 2px;
}
.timeline-org {
  font-weight: 600;
  color: var(--ink-soft);
  margin: 0 0 12px;
}
.timeline-content ul { display: flex; flex-direction: column; gap: 7px; }
.timeline-content li {
  position: relative;
  padding-left: 20px;
  color: var(--ink-soft);
  font-size: 0.98rem;
}
.timeline-content li:before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
}

.other-achievements {
  margin-top: 56px;
  padding: 32px;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
}
.other-achievements h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.other-achievements ul { display: flex; flex-direction: column; gap: 10px; }
.other-achievements li {
  position: relative;
  padding-left: 22px;
  color: var(--ink-soft);
}
.other-achievements li:before {
  content: "★";
  position: absolute;
  left: 0; top: 0;
  color: var(--accent-3);
  font-size: 0.9rem;
}

/* ---------- featured cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 12px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow);
  border-top: 6px solid var(--accent);
  transition: transform .25s ease, box-shadow .25s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 18px 34px rgba(23,24,28,0.14); }
.card-accent-1 { border-color: var(--accent); }
.card-accent-2 { border-color: var(--accent-2); }
.card-accent-3 { border-color: var(--accent-3); }
.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  margin: 0 0 12px;
}
.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.feature-card p { color: var(--ink-soft); font-size: 0.98rem; margin: 0; }

/* ---------- skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 12px;
}
.skills-col h3 {
  font-size: 1.05rem;
  margin-bottom: 16px;
  color: var(--accent-ink);
}
.tag-list { display: flex; flex-direction: column; gap: 10px; }
.tag-list li {
  background: var(--bg-alt);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
}

/* ---------- education ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 12px;
}
.edu-item {
  padding: 28px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
}
.edu-item h3 { font-size: 1.2rem; margin-bottom: 4px; }
.edu-item p { color: var(--ink-soft); margin: 0; }

/* ---------- contact ---------- */
.contact {
  background: var(--dark);
  color: var(--bg);
  border-radius: var(--radius-lg);
  margin: 0 20px;
  padding: 90px 0;
}
.contact .section-inner { max-width: 900px; }
.contact h2 { color: var(--bg); }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 24px;
  border: 1.5px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-sm);
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.contact-item:hover {
  border-color: var(--accent);
  background: rgba(255, 90, 54, 0.08);
  transform: translateY(-2px);
}
.contact-item-static:hover { transform: none; border-color: rgba(255,255,255,0.18); background: transparent; }
.contact-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--accent-3);
  font-weight: 700;
}
.contact-value { font-size: 1.05rem; font-weight: 600; }

.references-note {
  margin-top: 36px;
  color: #9AA0AE;
  font-size: 0.92rem;
  font-style: italic;
}

/* ---------- footer ---------- */
.site-footer {
  text-align: center;
  padding: 32px;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; text-align: left; }
  .hero-photo { justify-self: start; margin-top: 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; gap: 28px; }
  .edu-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-menu {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 32px 24px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    opacity: 0;
    transition: transform .3s ease, opacity .3s ease;
    z-index: 40;
  }
  .nav-menu.is-open { transform: translateY(0); opacity: 1; }
  .nav-menu a { padding: 12px 0; width: 100%; }
  .nav-cta { margin-top: 10px; text-align: center; }
  .hamburger { display: flex; }
  .contact { margin: 0 12px; border-radius: var(--radius-md); }
}

@media (max-width: 480px) {
  .section-inner { padding: 0 22px; }
  .hero { padding: 70px 22px 40px; }
  .nav-wrap { padding: 16px 22px; }
  .other-achievements { padding: 24px; }
}