/* ==========================================================================
   ntp.daha.net
   Görsel yön: istasyon kalkış panosu. Koyu ceviz gövde, fildişi kanatlar,
   kehribar uyarı lambası; altında soğuk kağıt üzerine grotesk metin.
   Tipografi: Archivo (pano + başlık), Archivo Narrow (etiket), DM Mono (kod).
   ========================================================================== */

:root {
  --paper:       #e8e7df;
  --paper-deep:  #dcdbd1;
  --card:        #f6f5ef;
  --ink:         #191713;
  --ink-soft:    #5f5b52;
  --ink-faint:   #918c81;
  --rule:        #cfcdc2;
  --rule-hard:   #b3b0a3;

  --board:       #1b1917;
  --board-lip:   #2c2822;
  --flap:        #f2eee3;
  --flap-lo:     #e4dfd1;
  --flap-ink:    #1b1917;
  --seam:        rgba(27, 25, 23, .55);

  --amber:       #d8901f;
  --amber-soft:  #f6e8cd;
  --ontime:      #3f8a5c;
  --late:        #c0392b;

  --disp: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --narr: "Archivo Narrow", "Archivo", system-ui, sans-serif;
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --flap-w: clamp(38px, 8.6vw, 76px);
  --flap-h: clamp(56px, 12.6vw, 110px);
}

/* --- temel ------------------------------------------------------------- */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--disp);
  font-size: 15.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--amber); color: #1b1917; }

a { color: var(--ink); text-decoration-color: var(--amber); text-decoration-thickness: 2px; text-underline-offset: .2em; }
a:hover { color: var(--amber); }

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

.wrap { max-width: 1120px; margin-inline: auto; padding-inline: 1.25rem; }

.eyebrow {
  font-family: var(--narr);
  font-size: .74rem; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-faint);
}

/* --- üst şerit ---------------------------------------------------------- */

.rail {
  position: sticky; top: 0; z-index: 40;
  background: var(--board);
  color: #cfc9bd;
  border-bottom: 3px solid var(--amber);
}
.rail .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.1rem; }
.rail-brand {
  font-family: var(--mono); font-size: .95rem; font-weight: 500;
  color: var(--flap); text-decoration: none; letter-spacing: -.01em;
}
.rail-brand b { color: var(--amber); font-weight: 500; }
.rail nav { display: flex; gap: 1.3rem; }
.rail nav a {
  font-family: var(--narr); font-size: .78rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: #a49d90; text-decoration: none;
}
.rail nav a:hover { color: var(--amber); }
@media (max-width: 780px) { .rail nav { display: none; } }

/* --- pano --------------------------------------------------------------- */

.board-shell { padding: 2.25rem 0 2.75rem; }

.board {
  background: var(--board);
  border-radius: 6px;
  box-shadow: 0 2px 0 var(--board-lip) inset, 0 22px 44px -30px rgba(27, 25, 23, .85);
  overflow: hidden;
}

.board-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: .85rem 1.35rem;
  border-bottom: 1px solid rgba(242, 238, 227, .12);
  font-family: var(--narr);
  font-size: .76rem; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase;
  color: #a49d90;
}
.board-head .lit {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--amber);
  font: inherit; margin: 0;
}
.board-head .bulb {
  width: .5rem; height: .5rem; border-radius: 50%;
  background: #6b6156; transition: background .3s, box-shadow .3s;
}
.board-head[data-state="ontime"] .bulb { background: var(--ontime); box-shadow: 0 0 8px var(--ontime); }
.board-head[data-state="off"]    .bulb { background: var(--amber);  box-shadow: 0 0 8px var(--amber); }
.board-head[data-state="bad"]    .bulb { background: var(--late);   box-shadow: 0 0 8px var(--late); }

.board-body { padding: 1.9rem 1.35rem 1.6rem; }

/* --- kanatlı rakamlar --------------------------------------------------- */

.flaps { display: flex; align-items: flex-end; justify-content: center; gap: .28rem; flex-wrap: nowrap; }
.flap-sep {
  font-family: var(--disp); font-weight: 700;
  font-size: calc(var(--flap-h) * .42);
  color: var(--amber);
  line-height: 1; padding: 0 .12rem calc(var(--flap-h) * .18);
}
.flap-tail {
  font-family: var(--mono);
  font-size: calc(var(--flap-h) * .2);
  color: #8d8578;
  padding-bottom: calc(var(--flap-h) * .1);
  padding-left: .3rem;
  font-variant-numeric: tabular-nums;
}

.flap {
  position: relative;
  width: var(--flap-w); height: var(--flap-h);
  perspective: 300px;
  border-radius: 5px;
  background: var(--board);
}
.fh {
  position: absolute; left: 0; width: 100%; height: 50%;
  overflow: hidden; background: var(--flap);
  backface-visibility: hidden;
}
.fh.t { top: 0; border-radius: 5px 5px 0 0; }
.fh.b { bottom: 0; border-radius: 0 0 5px 5px; background: var(--flap-lo); }
.fh::after { content: ""; position: absolute; left: 0; right: 0; height: 1px; background: var(--seam); }
.fh.t::after { bottom: 0; }
.fh.b::after { top: 0; }
.fh i {
  position: absolute; left: 0; width: 100%;
  height: var(--flap-h); line-height: var(--flap-h);
  font-family: var(--disp); font-weight: 700; font-style: normal;
  font-size: calc(var(--flap-h) * .72);
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  text-align: center; color: var(--flap-ink);
}
.fh.t i { top: 0; }
.fh.b i { bottom: 0; }

.fh.fold-out { z-index: 4; transform-origin: bottom center; animation: foldOut .11s ease-in forwards; }
.fh.fold-in  { z-index: 4; transform-origin: top center;    transform: rotateX(90deg);
               animation: foldIn .12s .11s cubic-bezier(.3, .9, .5, 1.15) forwards; }
@keyframes foldOut { to { transform: rotateX(-90deg); } }
@keyframes foldIn  { from { transform: rotateX(90deg); } to { transform: rotateX(0deg); } }

.board-date {
  text-align: center; margin: 1.25rem 0 0;
  font-family: var(--narr); font-size: .85rem; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase; color: #a49d90;
}

/* --- sefer satırları ---------------------------------------------------- */

.trips { margin-top: 1.6rem; border-top: 1px solid rgba(242, 238, 227, .13); }
.trip {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) .9fr .9fr 1fr;
  gap: .75rem; align-items: center;
  padding: .72rem .2rem;
  border-bottom: 1px solid rgba(242, 238, 227, .09);
  font-family: var(--mono); font-size: .88rem;
  color: #ded8cc; font-variant-numeric: tabular-nums;
}
.trip.head {
  font-family: var(--narr); font-size: .7rem; font-weight: 600;
  letter-spacing: .16em; text-transform: uppercase; color: #7d7669;
  padding-block: .5rem;
}
.trip .who { color: var(--flap); }
.trip .tag {
  justify-self: start;
  font-family: var(--narr); font-size: .72rem; font-weight: 600;
  letter-spacing: .13em; text-transform: uppercase;
  padding: .18rem .55rem; border-radius: 2px;
  background: rgba(242, 238, 227, .1); color: #cfc9bd;
}
.trip .tag[data-s="ref"]    { background: rgba(216, 144, 31, .18); color: var(--amber); }
.trip .tag[data-s="ontime"] { background: rgba(63, 138, 92, .2);  color: #74c294; }
.trip .tag[data-s="early"],
.trip .tag[data-s="late"]   { background: rgba(216, 144, 31, .18); color: var(--amber); }
.trip .tag[data-s="bad"]    { background: rgba(192, 57, 43, .2);  color: #e8836f; }
@media (max-width: 640px) {
  .trip { grid-template-columns: 1fr auto; row-gap: .25rem; font-size: .82rem; }
  .trip.head { display: none; }
  .trip .delta { text-align: right; }
  .trip .clock-cell { display: none; }
}

.board-meta {
  display: flex; flex-wrap: wrap; gap: 1.5rem;
  padding-top: .95rem;
  font-family: var(--mono); font-size: .8rem;
  color: #8d8578; font-variant-numeric: tabular-nums;
}
.board-meta b { color: #ded8cc; font-weight: 400; }

/* --- bölümler ----------------------------------------------------------- */

.band { padding-block: 3.5rem; border-top: 1px solid var(--rule); }
.band-grid { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 2.5rem; }
@media (max-width: 900px) { .band-grid { grid-template-columns: 1fr; gap: 1.25rem; } }

.band-label { position: sticky; top: 4.5rem; align-self: start; }
@media (max-width: 900px) { .band-label { position: static; } }
.band-label h2 {
  font-family: var(--disp); font-size: 1.3rem; font-weight: 700;
  letter-spacing: -.02em; margin: .35rem 0 .4rem;
}
.band-label p { font-size: .85rem; color: var(--ink-soft); margin: 0; }
.band-label .bar { width: 34px; height: 4px; background: var(--amber); border-radius: 2px; }

/* --- neden şeridi ------------------------------------------------------- */

.why { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.why div { background: var(--card); padding: 1.05rem 1.1rem; }
.why h3 { font-size: .92rem; font-weight: 700; margin: 0 0 .25rem; letter-spacing: -.01em; }
.why p { margin: 0; font-size: .85rem; color: var(--ink-soft); }
.why span {
  font-family: var(--mono); font-size: .7rem; color: var(--amber);
  display: block; margin-bottom: .5rem;
}

/* --- hızlı ayar --------------------------------------------------------- */

.quick { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.quick article { background: var(--card); border: 1px solid var(--rule); border-radius: 4px; padding: 1.1rem; }
.quick h3 { font-family: var(--narr); font-size: .8rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 .7rem; }
.quick p { font-size: .82rem; color: var(--ink-soft); margin: .6rem 0 0; }

/* --- kod ---------------------------------------------------------------- */

.code { position: relative; margin: 0 0 .8rem; }
.code pre {
  background: var(--board); color: #e6e0d4;
  font-family: var(--mono); font-size: .83rem; line-height: 1.75;
  padding: .9rem 5.2rem .9rem .95rem;
  border-radius: 4px; margin: 0; overflow-x: auto; tab-size: 2;
}
.code pre .c { color: #857d6f; }
.copy-btn {
  position: absolute; top: .5rem; right: .5rem;
  font-family: var(--narr); font-size: .68rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: #b8b1a3; background: rgba(242, 238, 227, .08);
  border: 1px solid rgba(242, 238, 227, .18);
  border-radius: 2px; padding: .22rem .55rem; cursor: pointer;
}
.copy-btn:hover { background: rgba(242, 238, 227, .16); color: var(--flap); }
.copy-btn.done { color: var(--amber); border-color: var(--amber); }

.file-tag {
  display: inline-block; font-family: var(--mono); font-size: .74rem;
  color: var(--ink-soft); background: var(--paper-deep);
  border: 1px solid var(--rule); border-bottom: 0;
  border-radius: 4px 4px 0 0; padding: .28rem .7rem;
}
.file-tag + .code pre { border-top-left-radius: 0; }

/* --- kurulum sekmeleri -------------------------------------------------- */

.tabs { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: 1.3rem; }
.tabs .nav-link {
  font-family: var(--narr); font-size: .79rem; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-soft); background: transparent;
  border: 1px solid var(--rule-hard); border-radius: 2px;
  padding: .4rem .8rem;
}
.tabs .nav-link:hover { color: var(--ink); border-color: var(--ink-soft); }
.tabs .nav-link.active { background: var(--board); border-color: var(--board); color: var(--flap); }

.sheet { background: var(--card); border: 1px solid var(--rule); border-radius: 4px; padding: 1.4rem; }
.sheet h3 { font-size: 1.08rem; font-weight: 700; letter-spacing: -.01em; margin: 0 0 .3rem; }
.sheet .note { font-size: .87rem; color: var(--ink-soft); margin: 0 0 1.1rem; }
.sheet h4 {
  font-family: var(--narr); font-size: .74rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint);
  margin: 1.5rem 0 .55rem;
}
.sheet h4:first-of-type { margin-top: 0; }
.sheet ul { padding-left: 1.05rem; margin: 0; font-size: .87rem; color: var(--ink-soft); }
.sheet ul li { margin-bottom: .32rem; }
.sheet code, .band-grid p code, .faq code {
  font-family: var(--mono); font-size: .86em;
  background: var(--paper-deep); padding: .08em .34em; border-radius: 2px; color: var(--ink);
}

/* --- sorun giderme ------------------------------------------------------ */

.fix { border: 1px solid var(--rule); border-radius: 4px; overflow: hidden; }
.fix-row { display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 1px; background: var(--rule); }
.fix-row > div { background: var(--card); padding: .9rem 1rem; font-size: .86rem; }
.fix-row.head > div {
  background: var(--paper-deep); font-family: var(--narr); font-size: .71rem;
  font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--ink-faint);
}
.fix-row .sym { font-family: var(--mono); font-size: .8rem; color: var(--ink); }
.fix-row .cau { color: var(--ink-soft); }
@media (max-width: 820px) {
  .fix-row { grid-template-columns: 1fr; }
  .fix-row.head { display: none; }
  .fix-row { border-bottom: 3px solid var(--rule-hard); }
  .fix-row .cau::before { content: "Neden — "; font-weight: 700; color: var(--ink); }
  .fix-row .rem::before { content: "Çözüm — "; font-weight: 700; }
}

/* --- künye -------------------------------------------------------------- */

.spec { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.spec > div { background: var(--card); padding: .95rem 1.05rem; }
.spec dt { font-family: var(--narr); font-size: .69rem; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--ink-faint); }
.spec dd { font-family: var(--mono); font-size: .92rem; margin: .2rem 0 0; word-break: break-all; }

.pact { margin-top: 1.25rem; display: grid; gap: .55rem; }
.pact li { list-style: none; display: flex; gap: .7rem; font-size: .89rem; color: var(--ink-soft); }
.pact li b { color: var(--ink); }
.pact li::before { content: "→"; color: var(--amber); font-weight: 700; }

/* --- SSS ---------------------------------------------------------------- */

.faq .accordion-item { background: var(--card); border: 1px solid var(--rule); border-radius: 4px !important; margin-bottom: .5rem; }
.faq .accordion-button {
  background: var(--card); color: var(--ink); border-radius: 4px !important;
  font-family: var(--disp); font-weight: 700; font-size: .95rem;
  padding: .95rem 1.1rem; box-shadow: none; letter-spacing: -.01em;
}
.faq .accordion-button:not(.collapsed) { background: var(--amber-soft); color: var(--ink); }
.faq .accordion-button:focus { box-shadow: none; }
.faq .accordion-body { font-size: .89rem; color: var(--ink-soft); padding: 0 1.1rem 1.1rem; }

/* --- alt ---------------------------------------------------------------- */

.foot { background: var(--board); color: #948d80; padding-block: 2rem 2.5rem; font-size: .84rem; }
.foot .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.foot b { color: var(--flap); font-weight: 500; font-family: var(--mono); }
.foot a { color: #948d80; text-decoration-color: var(--amber); }
.foot a:hover { color: var(--amber); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fh.fold-out, .fh.fold-in { animation: none !important; display: none !important; }
}