/* Venbacos — tanıtım sitesi. Tek stil dosyası; iki sayfa da bunu kullanır. */
:root {
  --ground: #F2F4F7;
  --surface: #FFFFFF;
  --ink: #0B1320;
  --muted: #5B6576;
  --line: #DCE1E8;
  --accent: #2447F5;
  --accent-ink: #FFFFFF;
  --accent-soft: #E4E9FF;
  --tag: #FFCF33;
  --tag-ink: #1A1400;
  --good: #11875A;
  --warn: #B26A00;
  --shadow: rgba(11, 19, 32, 0.22);
  --display: "Archivo", "Arial Narrow", "Helvetica Neue", sans-serif;
  --body: "Figtree", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --max: 1240px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0A111D; --surface: #111A2B; --ink: #E7ECF4; --muted: #95A0B3; --line: #223049;
    --accent: #7D95FF; --accent-ink: #0A111D; --accent-soft: #1A2550; --good: #4CC48E; --warn: #F0B34A;
    --shadow: rgba(0, 0, 0, 0.55);
  }
}
:root[data-theme="dark"] {
  --ground: #0A111D; --surface: #111A2B; --ink: #E7ECF4; --muted: #95A0B3; --line: #223049;
  --accent: #7D95FF; --accent-ink: #0A111D; --accent-soft: #1A2550; --good: #4CC48E; --warn: #F0B34A;
  --shadow: rgba(0, 0, 0, 0.55);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--ground); color: var(--ink); font-family: var(--body); font-size: 17px; line-height: 1.6; }
/* height:auto ŞART — width/height öznitelikli görsel daralınca oranı bozulmasın. */
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.container { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: clamp(16px, 4vw, 48px); }

/* ── Üst çubuk ── */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--ground) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--display); font-weight: 800; font-stretch: 115%; font-size: 22px; letter-spacing: -0.02em; }
.brand svg { width: 26px; height: 26px; flex: none; }
.nav { display: flex; align-items: center; gap: clamp(12px, 2.4vw, 28px); font-size: 15px; }
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav .btn { color: var(--accent-ink); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 6px; font: 600 15px var(--body); text-decoration: none; border: 1px solid transparent; cursor: pointer; white-space: nowrap; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); background: var(--surface); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }

/* ── Tipografi ── */
h1, h2, h3 { margin: 0; font-family: var(--display); letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: clamp(42px, 6.4vw, 84px); line-height: 0.98; font-weight: 800; font-stretch: 112%; }
h2 { font-size: clamp(32px, 4vw, 52px); line-height: 1.02; font-weight: 800; font-stretch: 108%; }
h3 { font-size: clamp(21px, 1.8vw, 25px); line-height: 1.15; font-weight: 700; }
.lead { font-size: clamp(19px, 1.7vw, 22px); line-height: 1.5; color: var(--muted); max-width: 56ch; margin: 0; text-wrap: pretty; }
.eyebrow { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0; }
p { margin: 0; }
.prose p + p { margin-top: 12px; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }

section.block { padding-block: clamp(64px, 10vw, 120px); }
section.block + section.block { border-top: 1px solid var(--line); }
.head { display: grid; gap: 14px; margin-bottom: clamp(32px, 5vw, 56px); max-width: 780px; }

/* ── Ana sayfa: açılış ── */
.hero { padding-block: clamp(48px, 8vw, 104px) clamp(56px, 8vw, 96px); }
.hero .container { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero-copy { display: grid; gap: 22px; }
.hero-copy h1 em { font-style: normal; color: var(--accent); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Operasyon kaydı — sahadaki işin yazılımdaki izi */
.log { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 34px 60px -42px var(--shadow); overflow: hidden; }
.log-head { display: flex; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 12px; color: var(--muted); }
.log-head b { color: var(--good); font-weight: 600; }
.log ol { list-style: none; margin: 0; padding: 6px 0; }
.log li { display: grid; grid-template-columns: 52px 10px minmax(0, 1fr); gap: 12px; align-items: baseline; padding: 9px 16px; font-size: 15px; line-height: 1.4; }
.log li + li { border-top: 1px dashed var(--line); }
.log time { font-family: var(--mono); font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.log i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); transform: translateY(-1px); }
.log i.ok { background: var(--good); }
.log i.warn { background: var(--warn); }
.log code { font-family: var(--mono); font-size: 13px; background: var(--ground); padding: 1px 5px; border-radius: 3px; }
.log-foot { padding: 10px 16px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

/* ── Ne yapıyoruz ── */
.cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.cols article { padding: 26px 28px 0 0; display: grid; gap: 12px; align-content: start; }
.cols article + article { padding-left: 28px; border-left: 1px solid var(--line); }
.cols ul { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 7px; color: var(--muted); font-size: 16px; }
.cols li::before { content: "— "; color: var(--accent); }

/* ── Öne çıkan proje ── */
.feature { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.feature-copy { display: grid; gap: 18px; }
.tag { justify-self: start; display: inline-flex; align-items: center; gap: 8px; font: 600 12.5px var(--mono); letter-spacing: 0.06em; text-transform: uppercase; background: var(--tag); color: var(--tag-ink); padding: 4px 9px; border-radius: 2px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.chips li { font: 500 13.5px var(--body); padding: 4px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--ink); }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); margin: 0; }
.facts div { padding: 14px 12px 0 0; display: flex; flex-direction: column-reverse; gap: 2px; }
.facts div + div { padding-left: 14px; border-left: 1px solid var(--line); }
.facts dt { font: 500 13px var(--body); color: var(--muted); }
.facts dd { margin: 0; font: 800 clamp(26px, 2.6vw, 34px)/1 var(--display); font-stretch: 108%; font-variant-numeric: tabular-nums; }

/* Ekran kompozisyonu: masaüstü + telefonlar */
.stage { position: relative; padding-bottom: 8%; padding-right: 6%; }
.window { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--surface); box-shadow: 0 40px 70px -46px var(--shadow); }
.window-bar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid var(--line); font: 12px var(--mono); color: var(--muted); white-space: nowrap; overflow: hidden; }
.window-bar i { width: 8px; height: 8px; border-radius: 50%; background: var(--line); flex: none; }
.window-bar span { overflow: hidden; text-overflow: ellipsis; }
.phone { width: 100%; max-width: 100%; border: 7px solid #0B1320; border-radius: 28px; overflow: hidden; background: #0B1320; box-shadow: 0 30px 50px -30px var(--shadow); }
.phone img { width: 100%; height: auto; }
.stage .phone { position: absolute; width: 24%; bottom: 0; right: 0; }
.stage .phone.second { right: 22%; bottom: -3%; }

/* ── Proje sayfası ── */
.crumbs { font: 13px var(--mono); color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { color: var(--muted); }
.phero { padding-block: clamp(40px, 7vw, 88px) clamp(48px, 7vw, 80px); }
.phero .container { display: grid; gap: clamp(28px, 4vw, 44px); }
.phero-top { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(24px, 4vw, 64px); align-items: end; }
.phero-top .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.phero-top .facts div:nth-child(3) { padding-left: 0; border-left: 0; }
.phero-top .facts div:nth-child(n+3) { border-top: 1px solid var(--line); margin-top: 14px; }

.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.split.flip { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.split.flip > .copy { order: 2; }
.copy { display: grid; gap: 16px; align-content: start; }
.copy .points { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.copy .points li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 10px; }
.copy .points li::before { content: ""; width: 10px; height: 10px; margin-top: 8px; border: 2px solid var(--accent); border-radius: 2px; }
.copy .points b { font-weight: 600; }
figure { margin: 0; }
figcaption { margin-top: 10px; font-size: 14px; color: var(--muted); }

.phones { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(14px, 2.4vw, 32px); align-items: start; }
.phones figure { display: grid; gap: 0; }
.phones.two { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 620px; }

.apps { display: grid; gap: clamp(56px, 8vw, 96px); }
.app { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
.app .copy { position: sticky; top: 96px; }

.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(18px, 3vw, 36px); }

.stack { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.stack div { padding: 20px 20px 0 0; display: grid; gap: 6px; align-content: start; }
.stack div + div { padding-left: 20px; border-left: 1px solid var(--line); }
.stack dt { font: 600 12.5px var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.stack dd { margin: 0; font-size: 16px; }

/* Demo giriş kartı */
.demo { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); border: 2px solid var(--ink); border-radius: 8px; background: var(--surface); overflow: hidden; }
.demo .main { padding: clamp(22px, 3vw, 36px); display: grid; gap: 20px; align-content: start; }
.demo .side { padding: clamp(22px, 3vw, 36px); border-left: 2px solid var(--ink); display: grid; gap: 14px; align-content: start; background: var(--ground); }
.cred { display: grid; margin: 0; }
.cred div { display: grid; grid-template-columns: 120px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding-block: 11px; border-top: 1px solid var(--line); }
.cred div:last-child { border-bottom: 1px solid var(--line); }
.cred dt { font: 600 12px var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.cred dd { margin: 0; font: 600 clamp(17px, 1.8vw, 21px) var(--mono); overflow-wrap: anywhere; }
.cred dd a { color: var(--accent); text-decoration: none; }
.copybtn { font: 600 13px var(--body); padding: 6px 11px; border: 1px solid var(--line); background: var(--ground); color: var(--ink); border-radius: 4px; cursor: pointer; }
.copybtn:hover { border-color: var(--ink); }
.side ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; }

/* ── İletişim & alt bilgi ── */
.contact { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: clamp(28px, 5vw, 72px); align-items: end; }
.contact .links { display: grid; gap: 0; border-top: 2px solid var(--ink); }
.contact .links a { display: flex; justify-content: space-between; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--line); text-decoration: none; font-size: 18px; }
.contact .links a span:last-child { color: var(--accent); font-family: var(--mono); font-size: 14px; }
.contact .links a:hover span:first-child { color: var(--accent); }
footer { border-top: 1px solid var(--line); padding-block: 28px; font-size: 14px; color: var(--muted); }
footer .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ── Duyarlı ── */
@media (max-width: 980px) {
  .hero .container, .feature, .phero-top, .split, .split.flip, .app, .contact, .demo { grid-template-columns: minmax(0, 1fr); }
  .split.flip > .copy { order: 0; }
  .app .copy { position: static; }
  .demo .side { border-left: 0; border-top: 2px solid var(--ink); }
  .cols, .stack { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .cols article:nth-child(3) { grid-column: 1 / -1; padding-left: 0; border-left: 0; border-top: 1px solid var(--line); margin-top: 20px; }
  .stack div:nth-child(3) { padding-left: 0; border-left: 0; }
  .stack div:nth-child(n+3) { border-top: 1px solid var(--line); margin-top: 16px; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .nav a:not(.btn) { display: none; }
  .cols, .stack, .gallery { grid-template-columns: minmax(0, 1fr); }
  .cols article + article, .stack div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .phones { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .phones figure:nth-child(3) { grid-column: 1 / -1; max-width: 50%; justify-self: center; }
  .facts { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .facts div:nth-child(3) { padding-left: 0; border-left: 0; }
  .cred div { grid-template-columns: minmax(0, 1fr) auto; }
  .cred dt { grid-column: 1 / -1; }
  .stage { padding-right: 0; padding-bottom: 0; }
  .stage .phone { display: none; }
}