/* ============================================================
   KORDA WEB — "Noční studio"
   near-black · warm bone · one restrained brass accent
   Archivo Expanded / Hanken Grotesk / JetBrains Mono
   ============================================================ */

:root {
  --ink:        #0D0D0F;
  --ink-raise:  #141417;
  --bone:       #ECE9E2;
  --muted:      #9A9AA3;
  --muted-deep: #6E6E77;
  --line:       rgba(236, 233, 226, 0.12);
  --line-soft:  rgba(236, 233, 226, 0.06);
  --brass:      #C6A15B;

  --font-display: "Archivo Expanded", sans-serif;
  --font-body:    "Hanken Grotesk", sans-serif;
  --font-mono:    "JetBrains Mono", monospace;

  --w: 1200px;
  --pad: 40px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

::selection { background: var(--bone); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 4px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 200;
  background: var(--bone);
  color: var(--ink);
  padding: 10px 18px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transform: translateY(-160%);
  transition: transform 0.25s var(--ease);
}
.skip-link:focus-visible { transform: none; }

/* ---------- atmosphere ---------- */

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--brass);
  z-index: 150;
  transition: width 0.1s linear;
}

.atmosphere { position: fixed; inset: 0; z-index: -1; pointer-events: none; }

.vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(198,161,91,0.05), transparent 55%),
    radial-gradient(100% 100% at 50% 120%, rgba(0,0,0,0.6), transparent 60%);
}

.grain {
  position: absolute; inset: 0;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.03 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: var(--w);
  margin: 0 auto;
  padding: 22px var(--pad);
  background: linear-gradient(var(--ink) 40%, rgba(13,13,15,0.7) 85%, transparent);
  backdrop-filter: blur(2px);
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
}
.wordmark-k { color: var(--brass); }
.wordmark-rest { color: var(--bone); }

.topnav { display: flex; gap: 30px; margin-left: auto; }
.topnav a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s var(--ease);
}
.topnav a span { position: relative; }
.topnav a span::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 100%; height: 1px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.topnav a:hover { color: var(--bone); }
.topnav a:hover span::after { transform: scaleX(1); }

.masthead-right { display: flex; align-items: center; gap: 22px; }

.clock {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--muted-deep);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
}
.clock-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 0 0 rgba(198,161,91,0.5);
  animation: pulse 3s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(198,161,91,0.45); }
  70% { box-shadow: 0 0 0 7px rgba(198,161,91,0); }
  100% { box-shadow: 0 0 0 0 rgba(198,161,91,0); }
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.lang-switch button {
  background: none; border: none; cursor: pointer;
  color: var(--muted-deep);
  font: inherit;
  padding: 2px;
  transition: color 0.2s var(--ease);
}
.lang-switch button.is-on { color: var(--bone); }
.lang-switch button:hover { color: var(--bone); }
.lang-sep { color: var(--line); }

/* ---------- hero ---------- */

.hero {
  max-width: var(--w);
  margin: 0 auto;
  padding: clamp(48px, 9vw, 120px) var(--pad) clamp(40px, 6vw, 76px);
}

.hero-meta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: clamp(32px, 6vw, 60px); }
.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--bone);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 15px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.tag-muted { color: var(--muted); }
.tag-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #7BD88F;
  box-shadow: 0 0 10px rgba(123,216,143,0.7);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.9rem, 11vw, 9rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
}
.line { display: block; overflow: hidden; }
.line-inner { display: block; will-change: transform; }
.hero-title .line-inner {
  transform: translateY(110%);
  animation: lineUp 1s var(--ease) forwards;
  animation-delay: var(--ld, 0s);
}
@keyframes lineUp { to { transform: translateY(0); } }

.hero-foot {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 40px;
  margin-top: clamp(36px, 6vw, 64px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--line);
}
.hero-lede {
  max-width: 46ch;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}
.hero-cta { display: flex; gap: 14px; flex-shrink: 0; }

/* ---------- buttons ---------- */

.btn {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  border-radius: 999px;
  padding: 15px 26px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.15s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.35s var(--ease); }
.btn-solid { background: var(--bone); color: var(--ink); }
.btn-solid:hover { background: #fff; }
.btn-solid:hover svg { transform: translateX(4px); }
.btn-line { border: 1px solid var(--line); color: var(--bone); }
.btn-line:hover { border-color: var(--bone); background: rgba(236,233,226,0.04); }

/* ---------- kinetic band ---------- */

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
  white-space: nowrap;
}
.marquee-track {
  display: inline-block;
  animation: marquee 34s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.2rem, 2.6vw, 2rem);
  letter-spacing: -0.01em;
  color: var(--bone);
  text-transform: uppercase;
}
.marquee-track i {
  color: var(--brass);
  font-style: normal;
  margin: 0 0.5em;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */

.section {
  max-width: var(--w);
  margin: 0 auto;
  padding: clamp(80px, 12vw, 160px) var(--pad) 0;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--brass);
  text-transform: uppercase;
}
.section-index span { color: var(--muted); }

.section-head { margin-bottom: clamp(40px, 6vw, 72px); }
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin-top: 18px;
}

/* ---------- manifest ---------- */

.manifest { display: grid; grid-template-columns: minmax(0,1fr); gap: 28px; }
.manifest-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  max-width: 20ch;
}
.reveal-line {
  display: block;
  opacity: 0;
  transform: translateY(0.35em);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}
.reveal-line.in { opacity: 1; transform: none; }
.accent-line { color: var(--muted-deep); }
.accent-line.in { color: var(--brass); }
.manifest-text { max-width: 22ch; }

/* ---------- work list ---------- */

.work-list { list-style: none; border-top: 1px solid var(--line); }
.work-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(28px, 4vw, 44px) 8px;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding-left 0.4s var(--ease);
}
.work-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(198,161,91,0.06), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.work-row:hover { padding-left: 22px; }
.work-row:hover::before { opacity: 1; }
.work-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted-deep);
  padding-top: 0.5em;
}
.work-body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 12px;
}
.work-body p { color: var(--muted); max-width: 52ch; }
.work-arrow {
  width: 26px; height: 26px;
  color: var(--muted-deep);
  align-self: center;
  transition: color 0.35s var(--ease), transform 0.45s var(--ease);
}
.work-row:hover .work-arrow { color: var(--brass); transform: translate(4px, -4px); }
.work-row:hover .work-body h3 { color: #fff; }

/* ---------- process ---------- */

.process {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.proc-step {
  background: var(--ink);
  padding: clamp(24px, 3vw, 38px) clamp(20px, 2.4vw, 30px) clamp(40px, 6vw, 72px);
  transition: background 0.4s var(--ease);
}
.proc-step:hover { background: var(--ink-raise); }
.proc-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--brass);
  display: block;
  margin-bottom: clamp(30px, 5vw, 60px);
}
.proc-step h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.proc-step p { color: var(--muted); font-size: 0.95rem; }

/* ---------- why ---------- */

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.why-item {
  background: var(--ink);
  padding: clamp(30px, 4vw, 52px);
  transition: background 0.4s var(--ease);
}
.why-item:hover { background: var(--ink-raise); }
.why-item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.why-item h3::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--brass);
  border-radius: 50%;
  flex-shrink: 0;
}
.why-item p { color: var(--muted); max-width: 42ch; }

/* ---------- contact ---------- */

.contact { text-align: left; padding-bottom: clamp(60px, 8vw, 120px); }
.contact-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: -0.03em;
  margin: 20px 0 28px;
}
.reveal-clip {
  transform: translateY(110%);
  transition: transform 0.9s var(--ease);
  transition-delay: calc(var(--i, 0) * 100ms);
}
.reveal-clip.in { transform: translateY(0); }
.contact-lede { max-width: 44ch; color: var(--muted); font-size: clamp(1rem, 1.4vw, 1.15rem); margin-bottom: clamp(40px, 6vw, 64px); }

.contact-rows { border-top: 1px solid var(--line); }
.contact-row {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: center;
  gap: 20px;
  padding: clamp(22px, 3vw, 34px) 8px;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.4s var(--ease);
}
.contact-row:hover { padding-left: 20px; }
.contact-key { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted-deep); text-transform: uppercase; letter-spacing: 0.06em; }
.contact-val {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}
.contact-ar { width: 24px; height: 24px; color: var(--muted-deep); transition: color 0.35s var(--ease), transform 0.45s var(--ease); }
.contact-row:hover .contact-ar { color: var(--brass); transform: translate(4px, -4px); }
.contact-row:hover .contact-val { color: #fff; }

/* ---------- footer ---------- */

.site-footer {
  max-width: var(--w);
  margin: 0 auto;
  padding: 40px var(--pad) 56px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 40px;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
}
.footer-brand .wordmark-k { color: var(--brass); }
.footer-socials { display: flex; gap: 24px; }
.footer-socials a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  position: relative;
  transition: color 0.25s var(--ease);
}
.footer-socials a:hover { color: var(--bone); }
.footer-legal {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted-deep);
}

/* ---------- scroll reveal (headings, rows) ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--i, 0) * 70ms);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  :root { --pad: 24px; }
  .topnav { display: none; }
  .clock { display: none; }
  .hero-foot { grid-template-columns: 1fr; align-items: start; gap: 28px; }
  .hero-cta { width: 100%; }
  .hero-cta .btn { flex: 1; justify-content: center; }
  .process { grid-template-columns: 1fr 1fr; }
  .work-row:hover, .contact-row:hover { padding-left: 8px; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .masthead { gap: 16px; padding: 18px var(--pad); }
  .hero-meta { gap: 10px; }
  .tag { font-size: 0.72rem; padding: 6px 12px; }
  .process { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .work-row { grid-template-columns: auto 1fr; }
  .work-arrow { display: none; }
  .work-num { grid-row: 1; }
  .contact-row { grid-template-columns: 1fr; gap: 6px; }
  .contact-ar { display: none; }
  .contact-key { order: -1; }
  .footer-legal { margin-left: 0; width: 100%; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-title .line-inner,
  .reveal, .reveal-line, .reveal-clip { animation: none !important; transition: none !important; opacity: 1 !important; transform: none !important; }
  .marquee-track { animation: none; }
  .clock-dot { animation: none; }
  .btn, .work-row, .contact-row, .work-arrow, .contact-ar { transition: none; }
}