/* ==========================================================================
   Artifis Studio – static site styles
   Layout: hero with wordmark at bottom · movie-tape carousel · clean footer.
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-alt: #f4f4f2;
  --ink: #000000;
  --ink-dim: rgba(0, 0, 0, 0.55);
  --ink-faint: rgba(0, 0, 0, 0.30);
  --line: rgba(0, 0, 0, 0.10);
  --line-strong: rgba(0, 0, 0, 0.20);
  --accent: #3737ff;
  --on-card: #ffffff;
  --on-card-dim: rgba(255, 255, 255, 0.65);

  --font-mono: 'Space Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1320px;
  --gutter: clamp(20px, 4vw, 56px);

  --radius: 18px;
  --radius-lg: 28px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --header-h: 64px;
  --tape-speed: 140s;        /* full cycle of the project tape — slow */
}

* { box-sizing: border-box; }

/* Ensure hidden attribute always wins over any display property */
[hidden] { display: none !important; }

/* Bilingual content — show only the language matching <html lang> */
html[lang="cs"] [lang="en"],
html[lang="en"] [lang="cs"] { display: none !important; }

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

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: opacity .25s var(--ease); }
a:hover { opacity: 0.55; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
::selection { background: var(--ink); color: #fff; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Header ------------------------------------------------------------------ */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 22px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}

.site-header.is-scrolled { border-bottom-color: var(--line); }

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: clamp(20px, 4vw, 48px);
}

.site-nav a {
  color: var(--ink);
  position: relative;
  padding: 6px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}

.site-nav a:hover { opacity: 1; }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }

/* Hero – pinned wordmark at bottom ---------------------------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--header-h) + 40px) var(--gutter) 32px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.4vw, 16px);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 16px;
}

.hero-tagline {
  margin-top: 18px;
  max-width: 50ch;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.1vw, 15px);
  color: var(--ink);
  line-height: 1.6;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-wordmark {
  width: 100%;
  display: block;
  color: var(--ink);
  margin-top: auto;
}

.hero-wordmark svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Project tape – horizontal infinite scroll with 3D hover --------------- */

.tape {
  position: relative;
  padding: clamp(40px, 6vw, 80px) 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.tape-head {
  padding: 0 var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: clamp(28px, 4vw, 48px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.tape-head .count { color: var(--ink-faint); }

.tape-track {
  display: flex;
  gap: clamp(20px, 2vw, 32px);
  padding: 30px var(--gutter);
  width: max-content;
  animation: tape-scroll var(--tape-speed) linear infinite;
  will-change: transform;
}

.tape.paused .tape-track { animation-play-state: paused; }

@keyframes tape-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.tape-item {
  flex: 0 0 auto;
  width: clamp(260px, 28vw, 460px);
  aspect-ratio: 4 / 3;
  perspective: 1400px;
  cursor: pointer;
}

.tape-card {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
  transform-style: preserve-3d;
  transform: rotateY(0) rotateX(0);
  transition:
    transform .8s var(--ease),
    box-shadow .8s var(--ease);
  box-shadow:
    0 10px 30px -16px rgba(0, 0, 0, 0.4),
    0 4px 12px -6px rgba(0, 0, 0, 0.2);
}

.tape-item:hover .tape-card {
  transform: rotateY(-14deg) rotateX(6deg) scale(1.04);
  box-shadow:
    0 40px 80px -30px rgba(0, 0, 0, 0.6),
    0 20px 40px -15px rgba(0, 0, 0, 0.35);
}

.tape-card-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translateZ(0);
  transition: transform .8s var(--ease), filter .6s var(--ease);
}

.tape-item:hover .tape-card-media { filter: brightness(0.7) saturate(1.1); }

.tape-card-info {
  position: absolute;
  inset: auto 0 0 0;
  padding: clamp(16px, 2vw, 28px);
  color: #fff;
  transform: translateZ(0px);
  transition: transform .8s var(--ease), opacity .5s var(--ease);
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(0,0,0,0));
}

.tape-item:hover .tape-card-info {
  opacity: 1;
  transform: translateZ(80px);
}

.tape-card-info .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 8px;
}

.tape-card-info .title {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2vw, 24px);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin: 0;
}

/* small "click-to-open" hint */
.tape-card-info .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.95;
}

/* Static label always visible (small corner tag) */
.tape-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 4px;
  transform: translateZ(20px);
  transition: opacity .4s var(--ease);
}

.tape-item:hover .tape-card-tag { opacity: 0; }

/* Footer ----------------------------------------------------------------- */

.site-footer {
  background: var(--bg);
  padding: clamp(40px, 5vw, 64px) var(--gutter);
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border-top: 1px solid var(--line);
}

@media (min-width: 720px) {
  .site-footer { grid-template-columns: auto 1fr auto; align-items: center; }
}

.footer-brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); }
.footer-brand svg { height: 18px; width: auto; }
.footer-links { display: inline-flex; gap: clamp(16px, 3vw, 32px); justify-content: center; flex-wrap: wrap; }
.footer-links a { color: var(--ink-dim); }

/* ==========================================================================
   Inner pages (about, contact, blog, playground, project)
   ========================================================================== */

.page {
  padding-top: calc(var(--header-h) + 80px);
  padding-bottom: clamp(60px, 10vw, 120px);
}

.page-head {
  padding-inline: var(--gutter);
  margin-bottom: clamp(40px, 6vw, 80px);
  max-width: var(--container);
  margin-inline: auto;
}

.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
}

.page-title {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: clamp(40px, 7vw, 96px);
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin: 0;
  text-transform: uppercase;
}

.page-lede {
  max-width: 60ch;
  margin-top: clamp(20px, 3vw, 32px);
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.55;
  color: var(--ink);
}

/* About ------------------------------------------------------------------ */

.about-body {
  max-width: 720px;
  padding-inline: var(--gutter);
  margin-inline: auto;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.about-body p { margin: 0 0 18px; }
.about-body h2 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.4vw, 28px);
  text-transform: uppercase;
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
  font-weight: 400;
}

.about-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  font-family: var(--font-mono);
}

.about-list li {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.about-list li .num {
  color: var(--ink-faint);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.about-list li b {
  font-weight: 400;
  text-transform: uppercase;
}

/* Contact ---------------------------------------------------------------- */

.contact-info {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .contact-info { grid-template-columns: 1fr 1fr; }
}

.contact-row {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}

.contact-value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--ink);
  letter-spacing: -0.01em;
}

/* Blog ------------------------------------------------------------------- */

.blog-list {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  gap: clamp(28px, 3vw, 40px);
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .blog-list { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1100px) {
  .blog-list { grid-template-columns: repeat(3, 1fr); }
}

.post-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-decoration: none;
  color: var(--ink);
  transition: transform .5s var(--ease);
}

.post-card:hover { opacity: 1; transform: translateY(-4px); }

.post-card-thumb {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.post-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s var(--ease);
}

.post-card:hover .post-card-thumb img { transform: scale(1.04); }

.post-card-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.post-card-title {
  font-family: var(--font-mono);
  font-size: clamp(18px, 1.8vw, 22px);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  font-weight: 400;
  line-height: 1.2;
}

.post-card-excerpt {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-dim);
  margin: 0;
}

/* Single blog post ------------------------------------------------------- */

.post-body {
  max-width: 720px;
  padding-inline: var(--gutter);
  margin-inline: auto;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
}

.post-body p { margin: 0 0 18px; }
.post-body h2 {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.4vw, 28px);
  text-transform: uppercase;
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
  font-weight: 400;
}
.post-body img { width: 100%; height: auto; border-radius: var(--radius); margin: 24px 0; }

/* Playground – endless feed --------------------------------------------- */

.playground-feed {
  max-width: 980px;
  margin-inline: auto;
  padding: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vw, 32px);
}

.playground-item {
  position: relative;
  width: 100%;
  background: var(--bg-alt);
  border-radius: var(--radius);
  overflow: hidden;
}

.playground-item img,
.playground-item video {
  width: 100%;
  height: auto;
  display: block;
}

.playground-empty {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: center;
  padding: 60px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
}

/* Reveal ----------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Coming-soon landing (homepage variant)
   Fits on a single screen (no scroll) on PC; scrolls on mobile if needed.
   ========================================================================== */

/* Lock the homepage to a single viewport on PC */
@media (min-width: 720px) {
  body.coming {
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
  }
  body.coming .hero-soon {
    height: 100vh;
    height: 100dvh;
  }
}

.hero-soon {
  padding-top: clamp(40px, 5vw, 80px);
  padding-bottom: clamp(20px, 3vw, 40px);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-soon .hero-top {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 60ch;
}

.hero-soon .hero-bottom {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* The wordmark — static (no link), capped so it never pushes other content
   off-screen on shorter PC displays */
.hero-soon .hero-wordmark {
  width: 100%;
  display: block;
  color: var(--ink);
}

.hero-soon .hero-wordmark svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(42vh, 460px);
}

.hero-credit {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: center;
}

/* Click-to-reveal contact button (anti-scrape) */
.hero-email-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 13px 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  border-radius: 999px;
  cursor: pointer;
  width: fit-content;
  transition: background .3s var(--ease), color .3s var(--ease), transform .3s var(--ease);
}

.hero-email-btn:hover {
  background: var(--ink);
  color: #fff;
  transform: translateY(-1px);
}

.hero-email-btn .star-icon {
  display: inline-block;
  color: var(--accent);
  animation: stamp-pulse 2.4s ease-in-out infinite;
}

.hero-email-btn:hover .star-icon { color: #fff; }

/* Revealed email link */
.hero-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
  width: fit-content;
}

.hero-email::before {
  content: "✉";
  font-size: 0.9em;
  opacity: 0.6;
}

.hero-email:hover {
  color: var(--accent);
  opacity: 1;
}

.hero-email[hidden] { display: none; }

/* Rotating "Coming Soon" stamp -------------------------------------------- */

.coming-stamp {
  position: absolute;
  top: 50%;
  right: clamp(20px, 6vw, 96px);
  transform: translateY(-60%);
  width: clamp(160px, 22vw, 260px);
  height: clamp(160px, 22vw, 260px);
  color: var(--ink);
  pointer-events: none;
  z-index: 1;
}

.coming-stamp > svg {
  width: 100%;
  height: 100%;
  animation: stamp-spin 22s linear infinite;
  transform-origin: center;
}

@keyframes stamp-spin {
  to { transform: rotate(360deg); }
}

.stamp-text {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.20em;
  fill: currentColor;
  text-transform: uppercase;
}

.stamp-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: clamp(28px, 3.5vw, 44px);
  color: var(--accent);
  animation: stamp-pulse 2.4s ease-in-out infinite;
}

@keyframes stamp-pulse {
  0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
  50%      { transform: scale(0.7) rotate(60deg); opacity: 0.55; }
}

/* Wavy "COMING SOON" line under the description -------------------------- */

.wave-line {
  display: inline-flex;
  gap: 0.18em;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 38px);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 14px;
}

.wave-line span {
  display: inline-block;
  animation: wave 2.8s ease-in-out infinite;
  /* Each letter passes --i: N inline; delay = N × 50 ms */
  animation-delay: calc(var(--i, 0) * 0.05s);
  transform-origin: 50% 80%;
}

.wave-line .star {
  color: var(--accent);
  animation: wave 2.8s ease-in-out infinite, spin-inplace 4s linear infinite;
}

@keyframes wave {
  0%, 100% { transform: translateY(0); }
  35%      { transform: translateY(-0.35em) scale(1.06); }
  70%      { transform: translateY(0); }
}

@keyframes spin-inplace {
  to { transform: rotate(360deg); }
}

/* Small "soon" footer ---------------------------------------------------- */

.footer-soon {
  padding: 16px var(--gutter);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
}

/* Tempera-stroke brush canvas — cursor paints on the page ------------ */

.brush {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: multiply;
}

@media (pointer: coarse) {
  /* No cursor on touch devices — no brush */
  .brush { display: none; }
}

/* Make sure content stacks above background layers */
.hero,
.site-header,
.site-footer,
.footer-soon,
.page { position: relative; z-index: 1; }

/* Language switcher (top right) ----------------------------------------- */

.lang-switch {
  position: fixed;
  top: clamp(18px, 2.5vw, 32px);
  right: clamp(20px, 3vw, 40px);
  z-index: 10;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  mix-blend-mode: difference;
  color: #fff;            /* difference of #fff against white BG = black */
}

.lang-btn {
  background: transparent;
  border: none;
  padding: 8px 10px;
  cursor: pointer;
  color: inherit;
  opacity: 0.45;
  position: relative;
  transition: opacity .3s var(--ease);
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.lang-btn:hover { opacity: 0.85; }

.lang-btn.is-active { opacity: 1; }

.lang-btn.is-active::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 4px;
  height: 1px;
  background: currentColor;
}

.lang-sep { opacity: 0.4; user-select: none; }

/* Custom invert cursor -------------------------------------------------- */

.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 24px;
  height: 24px;
  background: #ffffff;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  transition: width 0.35s var(--ease), height 0.35s var(--ease), opacity 0.3s var(--ease);
  will-change: transform;
  opacity: 0;
}

.cursor.is-active   { opacity: 1; }
.cursor.is-hovering { width: 64px; height: 64px; }

@media (pointer: coarse) {
  .cursor { display: none !important; }
}

/* Mobile tweaks ---------------------------------------------------------- */

@media (max-width: 720px) {
  .coming-stamp {
    position: static;
    transform: none;
    margin: 40px auto;
    width: clamp(160px, 60vw, 220px);
    height: clamp(160px, 60vw, 220px);
  }
  .blob { filter: blur(60px); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .tape-track,
  .coming-stamp > svg,
  .stamp-center,
  .wave-line span { animation: none !important; }
}
