/* ==========================================================================
   SWK Cycles — MVP kostra webu
   Paleta a komponenty jsou navržené tak, aby šly snadno přebarvit/přejmenovat.
   Hledej "TODO" pro místa k doladění před nasazením.
   ========================================================================== */

:root {
  /* ---- světlé (výchozí) barevné schéma ---- */
  --paper: #f6f1e8;
  --paper-alt: #efe7d8;
  --ink: #1b1811;
  --muted: #6f6656;
  --line: rgba(27, 24, 17, 0.14);
  --accent: #b34c1c;      /* žhavá ocel / měď */
  --accent-ink: #ffffff;
  --surface: #ffffff;

  /* ---- typografie ----
     Space Grotesk (nadpisy) + Inter (text) — načteno z Google Fonts, viz <head>.
     Fallback řetězec funguje i bez internetu / než se webfont načte. */
  --font-display: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* ---- rozměry ---- */
  --container: 1180px;
  --radius: 2px;
  --nav-h: 84px;
}

/* Tmavé schéma — na .section--dark (dílčí pás) i na body.page-dark (celá stránka) */
.section--dark,
body.page-dark {
  --paper: #15130f;
  --paper-alt: #1d1a14;
  --ink: #f2ece0;
  --muted: #b7ac97;
  --line: rgba(242, 236, 224, 0.14);
  --accent: #e2822f;
  --accent-ink: #15130f;
  --surface: #201c15;
}

/* ---------------------------- reset & base ------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s ease, color .3s ease;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; margin: 0 0 .5em; }
p { margin: 0 0 1em; color: var(--ink); }
p:last-child { margin-bottom: 0; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: .9em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.3rem; }

.lede { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-block: clamp(56px, 8vw, 108px);
}

.section--tight { padding-block: clamp(40px, 5vw, 64px); }

.section--dark { background: var(--paper); color: var(--ink); }
.section--alt { background: var(--paper-alt); }

.grid { display: grid; gap: 32px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.text-center { text-align: center; margin-inline: auto; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; top: -48px; left: 12px; z-index: 200;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: var(--radius);
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* -------------------------------- buttons -------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-weight: 600; font-size: .95rem;
  letter-spacing: .02em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 85%, black); }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { background: transparent; color: var(--ink); padding-inline: 0; text-decoration: underline; text-underline-offset: 4px; }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 1.75em; }

/* ---------------------------------- nav ---------------------------------- */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.site-nav.is-scrolled,
.site-nav.is-open,
body.no-hero .site-nav {
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom-color: var(--line);
}
.site-nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.brand { display: flex; flex-direction: column; line-height: 1; }
.brand-mark { font-family: var(--font-display); font-size: 1.4rem; letter-spacing: .04em; }
.brand-tag { font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-top: 4px; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: .92rem; font-weight: 600; letter-spacing: .01em; position: relative; padding-block: 6px; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px; background: var(--accent);
  transition: right .2s ease;
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { right: 0; }
.nav-links a[aria-current="page"] { color: var(--accent); }

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

.lang-toggle {
  display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  font-size: .78rem; font-weight: 700; letter-spacing: .06em;
}
.lang-toggle button {
  border: 0; background: transparent; color: var(--muted); padding: 7px 11px; cursor: pointer;
  font-family: var(--font-body); font-weight: 700;
}
.lang-toggle button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.nav-toggle {
  display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: var(--radius);
  background: transparent; cursor: pointer; position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 9px; right: 9px; height: 2px; background: var(--ink);
}
.nav-toggle span { top: 19px; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; inset: var(--nav-h) 0 0 0; z-index: 90;
    background: var(--paper);
    flex-direction: column; align-items: flex-start; gap: 6px;
    padding: 24px; transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
    overflow-y: auto;
  }
  .nav-links a { width: 100%; padding: 14px 4px; font-size: 1.1rem; border-bottom: 1px solid var(--line); }
  .site-nav.is-open .nav-links { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-actions { margin-left: auto; }
}

/* --------------------------------- hero ---------------------------------- */
.hero {
  position: relative;
  min-height: min(88vh, 780px);
  margin-top: calc(var(--nav-h) * -1);
  display: flex; align-items: flex-end;
  color: #f2ece0;
  overflow: hidden;
}
.hero-media {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(10,9,6,.35) 0%, rgba(10,9,6,.55) 55%, rgba(10,9,6,.92) 100%),
    repeating-linear-gradient(115deg, #2a2419 0 3px, #221d14 3px 6px);
}
.hero-content { position: relative; z-index: 1; padding-block: calc(var(--nav-h) + 40px) 72px; }
.hero .eyebrow { color: #e2a066; }
.hero h1 { max-width: 16ch; }
.hero .lede { color: #d8cfbe; }

/* small page header (non-hero pages) */
.page-header { padding-block: calc(var(--nav-h) + 48px) 40px; border-bottom: 1px solid var(--line); }

/* ------------------------------ placeholder img --------------------------- */
.placeholder-img {
  position: relative;
  aspect-ratio: var(--ar, 4 / 3);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    repeating-linear-gradient(135deg, color-mix(in srgb, var(--ink) 8%, var(--paper)) 0 14px, color-mix(in srgb, var(--ink) 4%, var(--paper)) 14px 28px);
  border: 1px solid var(--line);
  display: flex; align-items: flex-end;
}
.placeholder-img span {
  display: block; width: 100%;
  font-size: .74rem; letter-spacing: .04em; color: var(--muted);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  padding: 8px 12px;
  border-top: 1px solid var(--line);
}
.placeholder-img.ar-square { --ar: 1 / 1; }
.placeholder-img.ar-wide { --ar: 16 / 9; }
.placeholder-img.ar-tall { --ar: 3 / 4; }

/* -------------------------------- pillars --------------------------------- */
.pillar { padding: 8px 0; }
.pillar-icon {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); color: var(--accent); margin-bottom: 18px;
}
.pillar-icon svg { width: 22px; height: 22px; }

/* --------------------------------- cards ---------------------------------- */
.card { display: flex; flex-direction: column; gap: 14px; }
.card h3 { margin-bottom: 2px; }
.card .meta { font-size: .82rem; color: var(--muted); letter-spacing: .02em; }
.card-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: .88rem; margin-top: 4px; }
.card-link::after { content: "→"; transition: transform .15s ease; }
.card:hover .card-link::after { transform: translateX(4px); }

/* --------------------------- filter (portfolio) ---------------------------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-btn {
  border: 1px solid var(--line); background: transparent; color: var(--muted);
  padding: 9px 18px; border-radius: 999px; font-size: .85rem; font-weight: 700;
  cursor: pointer; font-family: var(--font-body);
  transition: all .15s ease;
}
.filter-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.frame-card[hidden] { display: none; }

/* ---------------------------------- blog ------------------------------------ */
.blog-post {
  display: grid; grid-template-columns: 200px 1fr; gap: 32px;
  padding-block: 44px; border-bottom: 1px solid var(--line);
}
.blog-post:first-child { padding-top: 0; }
.blog-post:last-child { border-bottom: 0; }
.blog-post-date {
  font-family: var(--font-display); font-size: 1.1rem; color: var(--muted);
  padding-top: 2px;
}
.blog-post-date .tag {
  display: block; margin-top: 10px; font-family: var(--font-body);
  font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent);
}
.blog-post-body h2 { margin-bottom: 14px; }
.blog-post-photos {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin: 22px 0;
}
.blog-post-photos .placeholder-img:first-child { grid-column: span 2; grid-row: span 2; }
@media (max-width: 640px) {
  .blog-post { grid-template-columns: 1fr; gap: 14px; }
  .blog-post-photos { grid-template-columns: repeat(2, 1fr); }
  .blog-post-photos .placeholder-img:first-child { grid-column: span 2; grid-row: auto; }
}

/* -------------------------------- timeline --------------------------------- */
.timeline { position: relative; display: flex; flex-direction: column; gap: 0; }
.timeline::before {
  content: ""; position: absolute; left: 27px; top: 8px; bottom: 8px; width: 1px;
  background: var(--line);
}
.step {
  position: relative; display: grid; grid-template-columns: 56px 1fr; gap: 24px 32px;
  padding-block: 34px; border-bottom: 1px solid var(--line);
}
.step:last-child { border-bottom: 0; }
.step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 1.15rem; color: var(--accent);
  z-index: 1;
}
.step-body { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start; }
.step-body h3 { margin-bottom: 8px; }
.step-time { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 10px; display: block; }
@media (max-width: 700px) {
  .step-body { grid-template-columns: 1fr; }
}

/* order-steps: compact horizontal version for cenik.html */
.order-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: os; }
@media (max-width: 900px) { .order-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .order-steps { grid-template-columns: 1fr; } }
.order-step { border-top: 3px solid var(--accent); padding-top: 16px; }
.order-step::before {
  counter-increment: os; content: counter(os, decimal-leading-zero);
  display: block; font-family: var(--font-display); color: var(--muted); font-size: .95rem; margin-bottom: 8px;
}

/* --------------------------------- quote ----------------------------------- */
.pull-quote {
  font-family: var(--font-display); font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.4; max-width: 34ch; position: relative; padding-left: 28px;
  border-left: 3px solid var(--accent);
}
.pull-quote cite { display: block; margin-top: 20px; font-family: var(--font-body); font-size: .85rem; font-style: normal; color: var(--muted); }

/* ----------------------------- testimonials -------------------------------- */
.testimonial { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.testimonial p { font-family: var(--font-display); font-size: 1.05rem; }
.testimonial .who { font-size: .82rem; color: var(--muted); margin-top: 14px; }

/* -------------------------------- pricing ----------------------------------- */
.price-table { width: 100%; border-collapse: collapse; }
.price-table th, .price-table td { text-align: left; padding: 16px 12px; border-bottom: 1px solid var(--line); }
.price-table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 700; }
.price-table td.price { text-align: right; font-family: var(--font-display); font-size: 1.05rem; white-space: nowrap; }
.price-table tr:last-child td { border-bottom: 0; }
.price-note { font-size: .82rem; color: var(--muted); margin-top: 14px; }

/* ---------------------------------- forms ------------------------------------ */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 620px) { .form-grid { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-size: .82rem; font-weight: 700; letter-spacing: .02em; }
.field .hint { font-size: .76rem; color: var(--muted); }
.field input, .field select, .field textarea {
  font: inherit; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: .8rem; color: var(--muted); margin-top: 18px; }

/* --------------------------------- accordion ---------------------------------- */
.accordion-item { border-bottom: 1px solid var(--line); }
.accordion-item summary {
  cursor: pointer; list-style: none; padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  font-weight: 700; font-size: 1.02rem;
}
.accordion-item summary::-webkit-details-marker { display: none; }
.accordion-item summary::after {
  content: "+"; font-size: 1.4rem; color: var(--accent); flex-shrink: 0; transition: transform .2s ease;
}
.accordion-item[open] summary::after { content: "–"; }
.accordion-item .accordion-body { padding-bottom: 22px; color: var(--muted); max-width: 62ch; }

/* ---------------------------------- cta band ----------------------------------- */
.cta-band { text-align: center; }
.cta-band h2 { max-width: 22ch; margin-inline: auto; }

/* ----------------------------------- footer ------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding-block: 56px 28px; background: var(--paper-alt); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 44px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); font-family: var(--font-body); margin-bottom: 16px; }
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid a:hover { color: var(--accent); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 24px; border-top: 1px solid var(--line);
  font-size: .78rem; color: var(--muted);
}
.social-row { display: flex; gap: 16px; }

/* --------------------------------- reveal-on-scroll -------------------------------- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------------------------------- misc badges ------------------------------------- */
.todo-badge {
  display: inline-block; font-size: .68rem; font-weight: 700; letter-spacing: .04em;
  background: #ffe3b0; color: #6b3d00; padding: 3px 8px; border-radius: 3px; margin-left: 8px;
  vertical-align: middle;
}
.section--dark .todo-badge, body.page-dark .todo-badge { background: #4a3312; color: #ffd399; }
