/* kio-kie — strona publikacji.
   Estetyka: drukowany program festiwalowy / rozkład jazdy.
   Fonty wyłącznie systemowe (zero CDN): serif edytorski w nagłówkach,
   monospace dla godzin i kodu, humanistyczny sans w treści. */

:root {
  --paper:      #f4efe3;
  --paper-2:    #ece5d4;
  --card:       #fbf8f0;
  --ink:        #1c1a16;
  --ink-soft:   #4a453b;
  --ink-faint:  #7c766a;
  --rule:       #d8cfba;
  --rule-hard:  #1c1a16;
  --accent:     #d1401f;   /* vermilion — akcent „stempla" */
  --accent-ink: #fbf8f0;
  --ok:         #2f7d4f;
  --ok-bg:      #e4f0e6;
  --err:        #b3261e;
  --err-bg:     #f6e2df;
  --shadow:     6px 6px 0 rgba(28, 26, 22, .12);

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans:  ui-sans-serif, "Segoe UI", Roboto, "Helvetica Neue", Arial, system-ui, sans-serif;
  --mono:  ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;

  --wrap: 62rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:     #17150f;
    --paper-2:   #1f1c14;
    --card:      #221f16;
    --ink:       #ede6d4;
    --ink-soft:  #c3bba6;
    --ink-faint: #8b8471;
    --rule:      #39342600;
    --rule:      #3a3427;
    --rule-hard: #ede6d4;
    --accent:    #f0663f;
    --accent-ink:#17150f;
    --ok:        #7fce9c;
    --ok-bg:     #1c2c21;
    --err:       #f4988e;
    --err-bg:    #2e1c1a;
    --shadow:    6px 6px 0 rgba(0, 0, 0, .4);
  }
}
:root[data-theme="dark"] {
  --paper:#17150f; --paper-2:#1f1c14; --card:#221f16; --ink:#ede6d4;
  --ink-soft:#c3bba6; --ink-faint:#8b8471; --rule:#3a3427; --rule-hard:#ede6d4;
  --accent:#f0663f; --accent-ink:#17150f; --ok:#7fce9c; --ok-bg:#1c2c21;
  --err:#f4988e; --err-bg:#2e1c1a; --shadow:6px 6px 0 rgba(0,0,0,.4);
}
:root[data-theme="light"] {
  --paper:#f4efe3; --paper-2:#ece5d4; --card:#fbf8f0; --ink:#1c1a16;
  --ink-soft:#4a453b; --ink-faint:#7c766a; --rule:#d8cfba; --rule-hard:#1c1a16;
  --accent:#d1401f; --accent-ink:#fbf8f0; --ok:#2f7d4f; --ok-bg:#e4f0e6;
  --err:#b3261e; --err-bg:#f6e2df; --shadow:6px 6px 0 rgba(28,26,22,.12);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  /* delikatna „faktura papieru" — czysto CSS, żadnych obrazków */
  background-image:
    repeating-linear-gradient(90deg, transparent 0 3px, rgba(124,118,106,.035) 3px 4px),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(124,118,106,.035) 3px 4px);
  line-height: 1.6;
  font-size: 17px;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.1; }

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.4rem; }

.kicker {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .72rem;
  color: var(--ink-faint);
}

/* ── Top bar ─────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: .7rem 1.4rem;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.topbar .brand {
  font-family: var(--mono); font-weight: 700; letter-spacing: -.02em;
  font-size: 1.05rem; color: var(--ink); text-decoration: none;
  display: inline-flex; align-items: center; gap: .5ch;
}
.topbar .brand .dot { color: var(--accent); }
.topbar nav { display: flex; gap: 1.1rem; align-items: center; }
.topbar nav a {
  font-family: var(--mono); font-size: .78rem; color: var(--ink-soft);
  text-decoration: none; text-transform: lowercase;
}
.topbar nav a:hover { color: var(--accent); }
.nav-links { display: flex; gap: 1.1rem; }
@media (max-width: 640px) { .nav-links { display: none; } }

.theme-toggle {
  font-family: var(--mono); font-size: .95rem; cursor: pointer;
  background: transparent; border: 1px solid var(--rule);
  color: var(--ink-soft); border-radius: 999px;
  width: 2rem; height: 2rem; line-height: 1; padding: 0;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* ── Hero ────────────────────────────────────────────── */
.hero { padding: clamp(3rem, 8vw, 6rem) 0 2.5rem; position: relative; }
.hero .edge {
  position: absolute; inset: auto 0 0 0; height: 3px;
  background: repeating-linear-gradient(90deg, var(--ink) 0 14px, transparent 14px 22px);
  opacity: .5;
}
.hero h1 {
  font-size: clamp(3.2rem, 13vw, 8rem);
  letter-spacing: -.03em; margin: .2rem 0 .1rem;
}
.hero h1 .dash { color: var(--accent); }
.hero .lede {
  font-family: var(--serif); font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  max-width: 40ch; color: var(--ink-soft); margin: 1rem 0 1.8rem; font-style: italic;
}
.hero .meta {
  display: flex; flex-wrap: wrap; gap: .5rem 1.5rem;
  font-family: var(--mono); font-size: .78rem; color: var(--ink-faint);
  border-top: 1px solid var(--rule); padding-top: 1rem;
}
.hero .meta b { color: var(--ink); font-weight: 600; }
.cta-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  font-family: var(--mono); font-size: .85rem; font-weight: 600;
  cursor: pointer; border: 2px solid var(--rule-hard);
  background: var(--card); color: var(--ink);
  padding: .65rem 1.1rem; border-radius: 2px;
  text-decoration: none; display: inline-flex; align-items: center; gap: .6ch;
  transition: transform .08s ease, box-shadow .08s ease, background .15s ease;
  box-shadow: var(--shadow);
}
.btn:hover { transform: translate(-2px,-2px); box-shadow: 8px 8px 0 rgba(28,26,22,.16); }
.btn:active { transform: translate(0,0); box-shadow: 2px 2px 0 rgba(28,26,22,.2); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.ghost { box-shadow: none; background: transparent; }
.btn.ghost:hover { box-shadow: none; background: var(--paper-2); }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; box-shadow: var(--shadow); }
.btn.small { padding: .4rem .75rem; font-size: .76rem; box-shadow: none; }

/* ── Sections ────────────────────────────────────────── */
section { padding: 3.2rem 0; border-top: 1px solid var(--rule); }
.sec-head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 1.6rem; }
.sec-head .num {
  font-family: var(--mono); font-size: .85rem; color: var(--accent);
  font-weight: 700; letter-spacing: .05em;
}
.sec-head h2 { font-size: clamp(1.8rem, 5vw, 2.8rem); letter-spacing: -.02em; margin: 0; }
.prose { max-width: 62ch; }
.prose p { margin: 0 0 1rem; }

/* ── Format: nesting diagram ─────────────────────────── */
.nest {
  font-family: var(--mono); font-size: .82rem; line-height: 1.9;
  background: var(--card); border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  padding: 1.1rem 1.3rem; border-radius: 2px; overflow-x: auto;
  box-shadow: var(--shadow);
}
.nest .lvl { color: var(--ink); }
.nest .req { color: var(--accent); font-weight: 700; }
.nest .opt { color: var(--ink-faint); }
.nest .cm  { color: var(--ink-faint); font-style: italic; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-top: 1.6rem; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }
.fact {
  background: var(--card); border: 1px solid var(--rule);
  padding: 1.1rem 1.2rem; border-radius: 2px;
}
.fact h3 { margin: 0 0 .4rem; font-size: 1.15rem; }
.fact p { margin: 0; color: var(--ink-soft); font-size: .93rem; }
.fact .tag {
  font-family: var(--mono); font-size: .68rem; text-transform: uppercase;
  letter-spacing: .12em; color: var(--accent); display: block; margin-bottom: .5rem;
}

table.fields { width: 100%; border-collapse: collapse; margin-top: 1.2rem; font-size: .9rem; }
table.fields th, table.fields td {
  text-align: left; padding: .5rem .7rem; border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
table.fields th { font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-faint); }
table.fields td.k { font-family: var(--mono); color: var(--accent); white-space: nowrap; }
table.fields td.r { font-family: var(--mono); font-size: .78rem; }
.field-scroll { overflow-x: auto; }

/* ── Prompt ──────────────────────────────────────────── */
.prompt-wrap { position: relative; margin-top: 1.4rem; }
.prompt-box {
  font-family: var(--mono); font-size: .78rem; line-height: 1.55;
  background: var(--ink); color: #e8e2d2;
  padding: 1.2rem 1.3rem; border-radius: 2px;
  max-height: 22rem; overflow: auto; white-space: pre-wrap; word-break: break-word;
  border: 2px solid var(--rule-hard); box-shadow: var(--shadow);
  margin: 0;
}
:root[data-theme="dark"] .prompt-box,
@media (prefers-color-scheme: dark) { }
.prompt-actions { display: flex; gap: .7rem; align-items: center; margin-bottom: .9rem; flex-wrap: wrap; }

/* ── Publish form ────────────────────────────────────── */
.tabs { display: inline-flex; border: 2px solid var(--rule-hard); border-radius: 2px; overflow: hidden; margin-bottom: 1.1rem; }
.tabs button {
  font-family: var(--mono); font-size: .8rem; font-weight: 600; cursor: pointer;
  background: var(--card); color: var(--ink-soft); border: 0;
  padding: .55rem 1.1rem;
}
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-ink); }
.tabs button + button { border-left: 2px solid var(--rule-hard); }

.field-label { font-family: var(--mono); font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-faint); display: block; margin-bottom: .5rem; }

textarea#json-input, input#url-input {
  width: 100%; font-family: var(--mono); font-size: .82rem; color: var(--ink);
  background: var(--card); border: 2px solid var(--rule-hard); border-radius: 2px;
  padding: .8rem .9rem; resize: vertical;
}
textarea#json-input { min-height: 13rem; line-height: 1.5; }
textarea#json-input:focus, input#url-input:focus { outline: none; border-color: var(--accent); }
.hint { font-size: .82rem; color: var(--ink-faint); margin: .5rem 0 0; }

.form-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.2rem; }

/* ── Messages / feedback ─────────────────────────────── */
.msg { border-radius: 2px; padding: .9rem 1.1rem; margin-top: 1.2rem; font-size: .92rem; border: 1px solid; }
.msg.hidden { display: none; }
.msg.ok  { background: var(--ok-bg); border-color: var(--ok); color: var(--ink); }
.msg.err { background: var(--err-bg); border-color: var(--err); color: var(--ink); }
.msg h3 { margin: 0 0 .5rem; font-size: 1.05rem; }
.msg ul { margin: .4rem 0 0; padding-left: 1.2rem; }
.msg li { margin: .25rem 0; font-family: var(--mono); font-size: .82rem; }
.msg code { font-family: var(--mono); background: color-mix(in srgb, var(--ink) 10%, transparent); padding: .05em .4em; border-radius: 2px; }

/* ── Publish result card ─────────────────────────────── */
.result-card {
  margin-top: 1.4rem; background: var(--card);
  border: 2px solid var(--rule-hard); border-radius: 2px;
  box-shadow: var(--shadow); overflow: hidden;
}
.result-card.hidden { display: none; }
.result-card .head {
  background: var(--accent); color: var(--accent-ink);
  padding: 1rem 1.3rem; display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.result-card .head .code {
  font-family: var(--mono); font-weight: 700; font-size: clamp(1.6rem, 6vw, 2.4rem);
  letter-spacing: .18em;
}
.result-card .body { padding: 1.2rem 1.3rem; }
.result-card .body p { margin: 0 0 .8rem; }
.token-row {
  display: flex; align-items: center; gap: .7rem; flex-wrap: wrap;
  background: var(--paper-2); border: 1px dashed var(--accent);
  padding: .7rem .9rem; border-radius: 2px; margin: .3rem 0 1rem;
}
.token-row code { font-family: var(--mono); font-size: .9rem; word-break: break-all; color: var(--ink); }
.warn { color: var(--accent); font-weight: 600; }
.link-list { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: .5rem; }
.link-list a { font-family: var(--mono); font-size: .85rem; }

/* ── Preview render ──────────────────────────────────── */
.preview { margin-top: 1.6rem; }
.preview.hidden { display: none; }
.preview-head {
  border-top: 2px solid var(--rule-hard); border-bottom: 1px solid var(--rule);
  padding: 1rem 0 .8rem; margin-bottom: 1.2rem;
}
.preview-head h3 { margin: 0; font-size: 1.5rem; }
.preview-head .sub { font-family: var(--mono); font-size: .78rem; color: var(--ink-faint); margin-top: .3rem; }
.pv-warns { font-size: .82rem; color: var(--ink-soft); margin: .6rem 0 0; }
.pv-warns li { margin: .15rem 0; }

.day-block { margin-bottom: 2.2rem; }
.day-block > h4 {
  font-family: var(--serif); font-size: 1.4rem; margin: 0 0 .2rem;
  display: flex; align-items: baseline; gap: .7rem;
}
.day-block > h4 .date { font-family: var(--mono); font-size: .8rem; color: var(--ink-faint); font-weight: 400; }
.day-block > h4::before { content: ""; }
.room-block { margin: 1.1rem 0 0; }
.room-name {
  font-family: var(--mono); text-transform: uppercase; letter-spacing: .12em;
  font-size: .74rem; color: var(--ink-faint);
  border-bottom: 1px solid var(--rule); padding-bottom: .3rem; margin-bottom: .3rem;
}
.session {
  display: grid; grid-template-columns: 4.4rem 1fr; gap: .1rem 1rem;
  padding: .7rem 0; border-bottom: 1px solid var(--rule); position: relative;
}
.session .time {
  font-family: var(--mono); font-size: .82rem; color: var(--ink); font-weight: 600;
  padding-left: .7rem; border-left: 4px solid var(--track, var(--ink-faint));
}
.session .time .dur { display: block; color: var(--ink-faint); font-weight: 400; font-size: .72rem; }
.session .body .title { font-family: var(--serif); font-size: 1.1rem; font-weight: 600; }
.session .body .subtitle { color: var(--ink-soft); font-size: .9rem; }
.session .body .persons { font-size: .85rem; color: var(--ink-soft); margin-top: .15rem; }
.session .body .meta { margin-top: .35rem; display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.chip {
  font-family: var(--mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em;
  padding: .12rem .5rem; border-radius: 999px; border: 1px solid var(--rule);
  color: var(--ink-soft);
}
.chip.track { color: #fff; border: 0; }
.session .body .abstract { font-size: .88rem; color: var(--ink-soft); margin-top: .4rem; }

/* ── Footer ──────────────────────────────────────────── */
footer {
  border-top: 3px solid var(--rule-hard); padding: 2.5rem 0 3.5rem;
  font-family: var(--mono); font-size: .8rem; color: var(--ink-faint);
}
footer a { color: var(--ink-soft); }
footer .row { display: flex; flex-wrap: wrap; gap: .4rem 1.5rem; justify-content: space-between; }

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

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}