/*
 * Endüstri ve Girişimcilikte Yapay Zeka – etkinlik sitesi
 *
 * Ana siteden bilinçli olarak ayrı bir kimlik: "endüstriyel veri sayfası".
 *  - Sıcak kâğıt zemin, mürekkep metin, ince ölçü çizgileri
 *  - Tek vurgu: Konya silüeti çizimindeki çivit (#5864e6). Ana sitenin kırmızısı yok.
 *  - IBM Plex Sans Condensed (başlık), IBM Plex Sans (metin), IBM Plex Mono (tarih, saat, etiket)
 *  - Açılış: silüet görselinin lacivert zemini (#0c192d) ile dikişsiz birleşen gece bandı
 */

:root {
  --ai-paper: #f3f1ec;
  --ai-paper-2: #ebe8e1;
  --ai-ink: #14161c;
  --ai-ink-soft: #4d515c;
  --ai-line: rgba(20, 22, 28, 0.14);
  --ai-line-strong: rgba(20, 22, 28, 0.32);
  --ai-night: #0c192d;
  --ai-night-2: #13223b;
  --ai-night-ink: #eef0f8;
  --ai-night-soft: #a8b0c8;
  --ai-signal: #5864e6;
  --ai-signal-ink: #3a44c4;      /* kâğıtta yazı (AA) */
  --ai-signal-light: #8d95ff;    /* gecede yazı (AA) */
  --ai-display: 'IBM Plex Sans Condensed', 'Arial Narrow', system-ui, sans-serif;
  --ai-text: 'IBM Plex Sans', system-ui, sans-serif;
  --ai-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --ai-gutter: clamp(1rem, 5vw, 4rem);
  --ai-max: 76rem;
  --ai-ease: cubic-bezier(0.23, 1, 0.32, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; scroll-padding-top: 80px; background: var(--ai-paper); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body.ai {
  margin: 0; background: var(--ai-paper); color: var(--ai-ink);
  font: 400 1.0625rem/1.65 var(--ai-text); -webkit-font-smoothing: antialiased;
}
.ai img { display: block; max-width: 100%; height: auto; }
.ai a { color: inherit; }
.ai h1, .ai h2, .ai h3 { font-family: var(--ai-display); font-weight: 700; letter-spacing: -0.01em; margin: 0; text-wrap: balance; }
.ai p { margin: 0; }
.ai :focus-visible { outline: 2px solid var(--ai-signal); outline-offset: 3px; border-radius: 2px; }
.ai ::selection { background: var(--ai-signal); color: #fff; }
.ai .mono { font-family: var(--ai-mono); }
.ai .sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ai .skip-link { position: absolute; left: 16px; top: -100px; z-index: 100; padding: 10px 16px; background: var(--ai-signal); color: #fff; font-weight: 600; text-decoration: none; }
.ai .skip-link:focus { top: 12px; }

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

/* Etiket: monospace, büyük harf, ince */
.ai-label {
  font-family: var(--ai-mono); font-size: 0.75rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ai-ink-soft);
}

/* --------------------------------------------------------------- top bar -- */
.ai-bar {
  position: sticky; top: 0; z-index: 50;
  background: var(--ai-night); color: var(--ai-night-ink);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.ai-bar .ai-wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; }
.ai-bar__brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--ai-mono); font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; }
.ai-bar__brand img { height: 22px; width: auto; filter: brightness(0) invert(1); }
.ai-bar__nav { display: flex; gap: 4px; margin-left: auto; }
.ai-bar__nav a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px;
  font-size: 0.9rem; font-weight: 500; text-decoration: none; color: var(--ai-night-soft);
}
.ai-bar__nav a:hover, .ai-bar__nav a[aria-current="page"] { color: #fff; }
.ai-bar__nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--ai-signal-light); }

/* ---------------------------------------------------------------- buttons -- */
.ai-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; border-radius: 2px;
  font: 600 0.95rem/1 var(--ai-text); text-decoration: none; cursor: pointer; white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color 160ms var(--ai-ease), color 160ms var(--ai-ease), border-color 160ms var(--ai-ease);
}
.ai-btn svg { width: 18px; height: 18px; }
.ai .ai-btn--signal { background: var(--ai-signal); color: #fff; }
.ai .ai-btn--signal:hover { background: #4651d6; }
.ai .ai-btn--ink { background: var(--ai-ink); color: var(--ai-paper); }
.ai .ai-btn--ink:hover { background: #2a2d36; }
.ai .ai-btn--line { border-color: var(--ai-line-strong); color: var(--ai-ink); background: transparent; }
.ai .ai-btn--line:hover { border-color: var(--ai-ink); }
.ai .ai-night .ai-btn--line, .ai .ai-bar .ai-btn--line { border-color: rgba(255, 255, 255, 0.32); color: #fff; }
.ai .ai-night .ai-btn--line:hover, .ai .ai-bar .ai-btn--line:hover { border-color: #fff; }
.ai-bar .ai-btn { min-height: 40px; padding: 0 16px; font-size: 0.85rem; }

/* ------------------------------------------------------------------- hero -- */
.ai-hero {
  position: relative; isolation: isolate; overflow: hidden;
  background: var(--ai-night); color: var(--ai-night-ink);
  padding-top: clamp(3.5rem, 9vw, 7rem);
}
/* İnce ölçü ızgarası: teknik çizim kâğıdı hissi */
.ai-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(141, 149, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(141, 149, 255, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 95%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 55%, transparent 95%);
}
.ai-hero__kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; color: var(--ai-night-soft); }
.ai-hero__kicker .ai-label { color: var(--ai-night-soft); }
.ai-status {
  display: inline-flex; align-items: center; gap: 8px; padding: 4px 10px;
  border: 1px solid rgba(141, 149, 255, 0.5); color: var(--ai-signal-light);
  font-family: var(--ai-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
}
.ai-status::before { content: ""; width: 7px; height: 7px; background: var(--ai-signal-light); }
.ai-hero__title {
  margin-top: clamp(1.25rem, 3vw, 2rem) !important;
  font-size: clamp(2.8rem, 1.2rem + 7.2vw, 7.4rem); line-height: 0.92; letter-spacing: -0.025em;
  text-transform: uppercase; max-width: 14ch;
}
.ai-hero__title em { font-style: normal; color: var(--ai-signal-light); }
.ai-hero__lede { margin-top: clamp(1.25rem, 3vw, 2rem) !important; max-width: 56ch; color: var(--ai-night-soft); font-size: clamp(1.05rem, 1rem + 0.3vw, 1.2rem); }
.ai-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }

/* Veri şeridi: tarih / saat / yer / format */
.ai-spec {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: clamp(2.5rem, 5vw, 3.5rem) 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.ai-spec > div { padding: 16px 20px 16px 0; border-right: 1px solid rgba(255, 255, 255, 0.1); min-width: 0; }
.ai-spec > div + div { padding-left: 20px; }
.ai-spec > div:last-child { border-right: 0; }
.ai-spec dt { font-family: var(--ai-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ai-night-soft); }
.ai-spec dd { margin: 6px 0 0; font-family: var(--ai-display); font-size: 1.2rem; font-weight: 600; line-height: 1.25; color: #fff; }

.ai-hero__sky { position: relative; margin-top: clamp(1.5rem, 4vw, 3rem); }
.ai-hero__sky img { width: min(1100px, 100%); margin-inline: auto; }
/* Silüet soldan sağa çizilerek gelir */
@media (prefers-reduced-motion: no-preference) {
  .ai-hero__sky img { animation: ai-draw 1600ms var(--ai-ease) 200ms both; }
}
@keyframes ai-draw { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }

/* -------------------------------------------------------------- sections -- */
.ai-sec { padding-block: clamp(4rem, 9vw, 7.5rem); border-top: 1px solid var(--ai-line); }
.ai-sec--tint { background: var(--ai-paper-2); }
.ai-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); column-gap: clamp(1.5rem, 4vw, 4rem); row-gap: 2rem; }
.ai-grid__head { position: sticky; top: 96px; align-self: start; }
.ai-grid__head .ai-label { display: block; margin-bottom: 10px; }
.ai-h2 { font-size: clamp(2rem, 1.3rem + 2.6vw, 3.4rem); line-height: 1; text-transform: uppercase; }
.ai-lead { font-size: clamp(1.15rem, 1rem + 0.6vw, 1.45rem); line-height: 1.55; max-width: 48ch; }
.ai-lead strong { font-weight: 600; }

/* Konu tablosu: veri sayfası satırları */
.ai-rows { list-style: none; margin: 2.5rem 0 0; padding: 0; border-top: 1px solid var(--ai-line-strong); }
.ai-rows li { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr); gap: 0 1.5rem; padding: 1.25rem 0; border-bottom: 1px solid var(--ai-line); }
.ai-rows__code { font-family: var(--ai-mono); font-size: 0.8rem; color: var(--ai-signal-ink); padding-top: 0.25rem; }
.ai-rows h3 { font-size: 1.35rem; line-height: 1.2; }
.ai-rows p { margin-top: 0.4rem; color: var(--ai-ink-soft); max-width: 62ch; }

/* Konuşmacılar */
.ai-speakers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 2.5rem); }
.ai-speaker { display: flex; flex-direction: column; border: 1px solid var(--ai-line-strong); background: var(--ai-paper); }
.ai-speaker__photo { aspect-ratio: 4 / 3; overflow: hidden; background: var(--ai-night); border-bottom: 1px solid var(--ai-line-strong); }
.ai-speaker__photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 25%; transition: transform 600ms var(--ai-ease); }
.ai-speaker__body { display: flex; flex-direction: column; gap: 10px; padding: 22px 24px 24px; flex: 1; }
.ai-speaker h3 { font-size: 1.9rem; line-height: 1; text-transform: uppercase; }
.ai-speaker__role { font-family: var(--ai-mono); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--ai-signal-ink); }
.ai-speaker__bio { color: var(--ai-ink-soft); }
.ai-speaker__links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; padding-top: 10px; }
@media (hover: hover) and (pointer: fine) {
  .ai-speaker:hover .ai-speaker__photo img { transform: scale(1.03); }
}

/* Program: saat çizelgesi */
.ai-schedule { width: 100%; border-collapse: collapse; border-top: 1px solid var(--ai-line-strong); }
.ai-schedule th, .ai-schedule td { text-align: left; vertical-align: top; padding: 1.4rem 0; border-bottom: 1px solid var(--ai-line); }
.ai-schedule th { width: 11rem; padding-right: 1.5rem; font-family: var(--ai-mono); font-size: 0.95rem; font-weight: 500; color: var(--ai-signal-ink); white-space: nowrap; }
.ai-schedule h3 { font-size: 1.45rem; line-height: 1.2; }
.ai-schedule p { margin-top: 0.4rem; color: var(--ai-ink-soft); max-width: 62ch; }
.ai-schedule .ai-who { margin-top: 0.6rem; font-family: var(--ai-mono); font-size: 0.78rem; color: var(--ai-ink-soft); }
.ai-schedule tr.is-break h3 { color: var(--ai-ink-soft); font-size: 1.15rem; }

/* ------------------------------------------------------------ night end -- */
.ai-night { background: var(--ai-night); color: var(--ai-night-ink); }
.ai-end { padding-block: clamp(4.5rem, 10vw, 8rem) 0; }
.ai-end__title { font-size: clamp(2.2rem, 1.3rem + 4vw, 4.6rem); line-height: 0.98; text-transform: uppercase; max-width: 18ch; }
.ai-end__title em { font-style: normal; color: var(--ai-signal-light); }
.ai-end p { margin-top: 1.25rem; color: var(--ai-night-soft); max-width: 52ch; }
.ai-end__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }
.ai-foot { margin-top: clamp(4rem, 8vw, 6rem); border-top: 1px solid rgba(255, 255, 255, 0.1); padding-block: 1.75rem 2.25rem; }
.ai-foot .ai-wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; }
.ai-foot__brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ai-night-soft); font-size: 0.9rem; text-decoration: none; }
.ai-foot__brand img { height: 22px; filter: brightness(0) invert(1); }
.ai-foot nav { display: flex; flex-wrap: wrap; gap: 0 1.25rem; }
.ai-foot nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--ai-night-soft); font-size: 0.9rem; text-decoration: none; }
.ai-foot nav a:hover { color: #fff; }
.ai-foot .ai-label { width: 100%; color: var(--ai-night-soft); }

/* ------------------------------------------------------- speaker detail -- */
.ai-profile { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: end; padding-bottom: clamp(3rem, 6vw, 5rem); }
.ai-profile__photo { border: 1px solid rgba(255, 255, 255, 0.16); background: var(--ai-night-2); }
.ai-profile__photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: 50% 20%; }
.ai-profile .ai-hero__title { font-size: clamp(2.6rem, 1.2rem + 5vw, 5.6rem); }
.ai-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 2rem 0 0; border-top: 1px solid rgba(255, 255, 255, 0.16); }
.ai-facts > div { padding: 14px 16px 0 0; }
.ai-facts dt { font-family: var(--ai-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ai-night-soft); }
.ai-facts dd { margin: 4px 0 0; font-family: var(--ai-display); font-size: 1.6rem; font-weight: 700; color: #fff; line-height: 1.1; }
.ai-back { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--ai-night-soft); font-family: var(--ai-mono); font-size: 0.8rem; text-decoration: none; letter-spacing: 0.04em; }
.ai-back:hover { color: #fff; }
.ai-back svg { width: 16px; height: 16px; }

/* Kayıt kapalı notu */
.ai-notice { border: 1px solid var(--ai-line-strong); background: var(--ai-paper); padding: clamp(1.5rem, 4vw, 2.5rem); max-width: 44rem; }
.ai-notice h2 { font-size: clamp(1.8rem, 1.3rem + 1.8vw, 2.6rem); text-transform: uppercase; line-height: 1; }
.ai-notice p { margin-top: 1rem; color: var(--ai-ink-soft); }
.ai-notice .ai-hero__actions .ai-btn--line { color: var(--ai-ink); }

/* ---------------------------------------------------------------- mobile -- */
@media (max-width: 900px) {
  .ai-grid, .ai-profile { grid-template-columns: 1fr; }
  .ai-grid__head { position: static; }
  .ai-spec { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ai-spec > div:nth-child(2) { border-right: 0; }
  .ai-spec > div:nth-child(3) { padding-left: 0; }
  .ai-spec > div:nth-child(n+3) { border-top: 1px solid rgba(255, 255, 255, 0.1); }
  .ai-speakers { grid-template-columns: 1fr; }
  .ai-profile__photo { max-width: 420px; }
}
@media (max-width: 640px) {
  /* Menü gizlenmez: logonun altında, yatay kaydırılabilen ikinci satır */
  .ai-bar .ai-wrap { flex-wrap: wrap; gap: 0 12px; min-height: 0; padding-top: 10px; }
  .ai-bar .ai-btn { margin-left: auto; }
  .ai-bar__nav { order: 3; width: 100%; margin: 4px 0 0 -12px; overflow-x: auto; scrollbar-width: none; }
  .ai-bar__nav::-webkit-scrollbar { display: none; }
  .ai-bar__nav a { white-space: nowrap; }
  .ai-schedule th { display: block; width: auto; padding: 1.25rem 0 0.25rem; border-bottom: 0; }
  .ai-schedule td { display: block; padding-top: 0; }
  .ai-schedule tr { display: block; border-bottom: 1px solid var(--ai-line); }
  .ai-schedule td { border-bottom: 0; }
  .ai-rows li { grid-template-columns: 1fr; }
  .ai-rows__code { padding: 0 0 4px; }
  .ai-facts { grid-template-columns: 1fr 1fr; }
  .ai-btn { flex: 1 1 auto; }
}

/* Gece zemininde (açılış) çizgili düğme açık renkte */
.ai .ai-hero .ai-btn--line { border-color: rgba(255, 255, 255, 0.32); color: #fff; }
.ai .ai-hero .ai-btn--line:hover { border-color: #fff; }