/* Layout: tek sütun okuma akışı (max 72ch) + sabit "Ara / WhatsApp" çubuğu; ilk ekranda iş, yer ve telefon. Altyapı tabelası ve şantiye işaretleri dili. */
:root {
  --bg: #f3f5f2;
  --surface: #ffffff;
  --ink: #15212b;
  --muted: #4f5d66;
  --line: #d6dcd8;
  --deep: #1d3340;
  --deep-ink: #eef3f1;
  --call: #e2560b;
  --call-hover: #c84a07;
  --call-ink: #ffffff;
  --wa: #128c4a;
  --wa-hover: #0e7a40;
  --wa-ink: #ffffff;
  --accent: #e2560b;
  --tint: #fbeee5;
  --good: #1f8a52;
  --bad: #c2362b;
  --pipe: #6f8792;
  --soil: #c9b79a;
  --soil-deep: #b39f80;
  --soil-ink: #1b2731; --tunnel-ink: #b84207; --sky: #e6eef0; --grass: #79a865; --void: #2b2724; --wood: #a8743e; --sand: #e2d2a6; --road: #5a656c;
  --display: "Barlow Condensed", "Arial Narrow", "Roboto Condensed", sans-serif;
  --body: "Barlow", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f171d; --surface: #16222a; --ink: #e6ecea; --muted: #a3b1b8; --line: #2b3a43;
    --deep: #0b1318; --deep-ink: #e6ecea; --call: #ff7a2e; --call-hover: #ff8c4a; --call-ink: #1a0d04;
    --wa: #25c26a; --wa-hover: #33d47a; --wa-ink: #04170c; --accent: #ff8a45; --tint: #2a1e16;
    --good: #4cc584; --bad: #ff6b5e; --pipe: #8aa1ab; --soil: #4a4134; --soil-deep: #3b3329; --soil-ink: #eef3f1; --tunnel-ink: #ffa066; --sky: #13202a; --grass: #3d6a39; --void: #07090b; --wood: #b98552; --sand: #6b5f45; --road: #2c363c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f171d; --surface: #16222a; --ink: #e6ecea; --muted: #a3b1b8; --line: #2b3a43;
  --deep: #0b1318; --deep-ink: #e6ecea; --call: #ff7a2e; --call-hover: #ff8c4a; --call-ink: #1a0d04;
  --wa: #25c26a; --wa-hover: #33d47a; --wa-ink: #04170c; --accent: #ff8a45; --tint: #2a1e16;
  --good: #4cc584; --bad: #ff6b5e; --pipe: #8aa1ab; --soil: #4a4134; --soil-deep: #3b3329; --soil-ink: #eef3f1; --tunnel-ink: #ffa066; --sky: #13202a; --grass: #3d6a39; --void: #07090b; --wood: #b98552; --sand: #6b5f45; --road: #2c363c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--body); font-size: 18px; line-height: 1.65;
  padding-bottom: calc(84px + env(safe-area-inset-bottom, 0px));
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--deep); }
.wrap {
  width: 100%; max-width: 1080px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* Üst şerit */
.topbar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--deep); color: var(--deep-ink); }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--display); font-weight: 800; font-size: 22px; letter-spacing: .02em; text-transform: uppercase; }
.brand svg { flex: none; }
.top-call { display: flex; align-items: center; gap: 10px; }
.top-call .num { font-family: var(--mono); font-size: 15px; opacity: .9; white-space: nowrap; }
.badge-247 { font-family: var(--display); font-weight: 700; font-size: 14px; letter-spacing: .08em; text-transform: uppercase; background: var(--call); color: var(--call-ink); border-radius: 4px; padding: 2px 8px; }
@media (max-width: 560px) { .top-call .num { display: none; } .brand span { font-size: 18px; white-space: nowrap; } }
@media (max-width: 400px) { .badge-247 { display: none; } .brand { gap: 8px; } .brand span { font-size: 16px; } }
.brand { min-width: 0; } .brand span { overflow: hidden; text-overflow: ellipsis; } .top-call { flex: none; }

/* Butonlar */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 60px; padding: 12px 24px; border-radius: 14px; border: 0;
  font-family: var(--display); font-weight: 800; font-size: 22px; letter-spacing: .03em; text-transform: uppercase;
  text-decoration: none; cursor: pointer; position: relative;
  transition: transform .15s ease, background-color .15s ease, box-shadow .15s ease;
}
.btn small { display: block; font-family: var(--mono); font-weight: 500; font-size: 14px; letter-spacing: 0; text-transform: none; opacity: .92; }
.btn .lbl { display: flex; flex-direction: column; line-height: 1.1; text-align: left; }
.btn svg { flex: none; }
.btn-call { background: var(--call); color: var(--call-ink); box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--call) 70%, transparent), inset 0 -3px 0 rgba(0,0,0,.18); }
.btn-call:hover { background: var(--call-hover); transform: translateY(-2px); }
.btn-wa { background: var(--wa); color: var(--wa-ink); box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--wa) 70%, transparent), inset 0 -3px 0 rgba(0,0,0,.18); }
.btn-wa:hover { background: var(--wa-hover); transform: translateY(-2px); }
.btn-call::after {
  content: ""; position: absolute; inset: -4px; border-radius: 18px; border: 3px solid var(--call);
  animation: ring 2.2s ease-out infinite; pointer-events: none;
}
@keyframes ring { 0% { opacity: .8; transform: scale(1); } 70%,100% { opacity: 0; transform: scale(1.08); } }
@media (prefers-reduced-motion: reduce) { .btn-call::after { animation: none; opacity: 0; } .btn { transition: none; } }
.btn-sm { min-height: 44px; padding: 8px 16px; font-size: 18px; border-radius: 10px; }
.btn-sm::after { border-radius: 14px; }

/* Hero */
.hero { background: var(--deep); color: var(--deep-ink); position: relative; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 10px;
  background: repeating-linear-gradient(-45deg, var(--call) 0 16px, transparent 16px 32px);
  opacity: .9;
}
.hero .wrap { padding-block: 40px 56px; display: grid; gap: 28px; grid-template-columns: 1.1fr .9fr; align-items: center; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; padding-block: 28px 44px; } }
.crumbs { font-size: 14px; opacity: .8; margin: 0 0 12px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.eyebrow { font-family: var(--mono); font-size: 14px; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); margin: 0 0 8px; }
h1 {
  font-family: var(--display); font-weight: 800; text-transform: uppercase;
  font-size: clamp(44px, 8vw, 84px); line-height: .92; letter-spacing: .005em; margin: 0 0 16px; text-wrap: balance;
}
h1 em { font-style: normal; color: var(--accent); display: block; }
.lead { font-size: 20px; max-width: 34em; margin: 0 0 24px; opacity: .95; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.cta-row .btn { flex: 1 1 260px; }
.facts { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 16px; }
.facts li { display: flex; align-items: center; gap: 8px; }
.facts li::before { content: ""; width: 10px; height: 10px; border-radius: 2px; background: var(--accent); transform: rotate(45deg); flex: none; }

.diagram-card { background: color-mix(in srgb, var(--deep-ink) 6%, transparent); border: 1px solid color-mix(in srgb, var(--deep-ink) 18%, transparent); border-radius: 16px; padding: 14px; }
.diagram-card figcaption { font-size: 14px; opacity: .85; margin-top: 8px; }
.diagram-card svg { width: 100%; height: auto; display: block; }

/* İçerik */
main { padding-block: 40px 24px; }
.answer {
  background: var(--surface); border: 2px solid var(--accent); border-radius: 14px; padding: 20px 22px; margin: 0 0 40px;
}
.answer h2 { font-size: 26px; margin: 0 0 8px; }
.answer p { margin: 0; }
.cols { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; align-items: start; }
@media (max-width: 960px) { .cols { grid-template-columns: minmax(0, 1fr); } .side { display: none; } }
article { min-width: 0; }
article > section { margin-bottom: 48px; }
article p, article li { max-width: 68ch; }
h2 {
  font-family: var(--display); font-weight: 800; text-transform: uppercase; letter-spacing: .01em;
  font-size: clamp(30px, 4.2vw, 40px); line-height: 1.02; margin: 0 0 14px; text-wrap: balance;
}
h3 { font-family: var(--display); font-weight: 700; font-size: 26px; line-height: 1.1; margin: 28px 0 8px; text-wrap: balance; }
.updated { font-family: var(--mono); font-size: 13px; color: var(--muted); }

.steps { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 14px; counter-reset: s; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.steps li::before { content: counter(s); font-family: var(--display); font-weight: 800; font-size: 34px; line-height: 1; color: var(--accent); }
.steps strong { display: block; font-size: 19px; }

.tablewrap { overflow-x: auto; margin: 18px 0 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; min-width: 620px; font-size: 16px; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--display); font-size: 18px; letter-spacing: .03em; text-transform: uppercase; background: color-mix(in srgb, var(--ink) 5%, transparent); }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 600; }

.callout { background: var(--tint); border-radius: 12px; padding: 18px 20px; margin: 20px 0 0; }
.callout p { margin: 0; }

/* İlçeler */
.district-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 8px; padding: 0; list-style: none; }
.district-nav a { display: inline-block; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-size: 15px; background: var(--surface); }
.district-nav a:hover { border-color: var(--accent); color: var(--accent); }
.district { border-top: 1px solid var(--line); padding-top: 4px; scroll-margin-top: 80px; }
.district h3 .tag { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 4px; }
.mini-cta { display: inline-flex; gap: 6px; align-items: center; font-weight: 700; color: var(--call); text-decoration: none; font-size: 16px; }
.mini-cta:hover { text-decoration: underline; }

/* SSS */
details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; margin-bottom: 10px; }
details[open] { border-color: var(--accent); }
summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font-weight: 700; font-size: 19px; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 12px; font-family: var(--display); font-size: 28px; color: var(--accent); }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 16px; }

/* Yan kart */
.side { position: sticky; top: calc(80px + env(safe-area-inset-top, 0px)); }
.side-card { background: var(--deep); color: var(--deep-ink); border-radius: 16px; padding: 22px; display: grid; gap: 12px; }
.side-card h2 { font-size: 28px; margin: 0; }
.side-card p { margin: 0; font-size: 16px; opacity: .9; }
.side-card .btn { width: 100%; font-size: 20px; }
.side-card .num { font-family: var(--mono); font-size: 22px; letter-spacing: .02em; user-select: all; }

/* Son çağrı */
.final { background: var(--deep); color: var(--deep-ink); }
.final .wrap { padding-block: 44px; display: grid; gap: 18px; }
.final h2 { margin: 0; }
.final .big-num { font-family: var(--mono); font-size: clamp(26px, 6vw, 40px); user-select: all; }

footer { font-size: 14px; color: var(--muted); }
footer .wrap { padding-block: 24px; }

/* Sabit alt çubuk (mobil) + yüzen butonlar (masaüstü) */
.dock {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 25;
  background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
  padding: 10px max(12px, env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(12px, env(safe-area-inset-left, 0px));
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 10px;
}
.dock .btn { min-height: 56px; font-size: 19px; padding: 8px 10px; border-radius: 12px; white-space: nowrap; gap: 8px; }
@media (max-width: 380px) { .dock .btn { font-size: 17px; } .dock .btn svg { width: 20px; height: 20px; } }
.dock .btn::after { border-radius: 16px; }
@media (min-width: 961px) {
  body { padding-bottom: 0; }
  .dock { left: auto; right: max(24px, env(safe-area-inset-right, 0px)); bottom: calc(24px + env(safe-area-inset-bottom, 0px)); width: auto; background: none; border: 0; backdrop-filter: none; padding: 0; grid-template-columns: auto; }
  .dock .btn { min-height: 60px; padding: 10px 22px; }
}

/* Görseller bölümü: masaüstü 3 sütun, tablet 2 sütun (ilk görsel tam genişlik), telefon tek sütun */
.visuals { margin: 0 0 48px; }
.visuals-lead { max-width: 68ch; margin: 0 0 18px; }
.vgrid { display: grid; gap: 18px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .vgrid { grid-template-columns: 1fr 1fr; } .vcard-wide { grid-column: 1 / -1; } }
.vcard { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 14px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.vcard svg { width: 100%; height: auto; display: block; border-radius: 10px; background: var(--sky); }
.vcard figcaption { font-size: 16px; line-height: 1.55; }
.visuals-note { font-size: 14px; color: var(--muted); margin: 12px 0 0; }
.v-label { font-family: var(--body); font-size: 15px; fill: var(--ink); }
.v-strong { font-weight: 700; }
.v-lg { font-size: 26px; }
.v-bad-text { fill: var(--bad); font-weight: 700; }
.v-good-text { fill: var(--good); font-weight: 700; }
.v-soil { fill: var(--soil); }
.v-grain { fill: var(--soil-deep); }
.v-grass { fill: var(--grass); }
.v-garden { fill: var(--grass); opacity: .55; }
.v-void { fill: var(--void); }
.v-wood { stroke: var(--wood); fill: none; }
.v-ladder { stroke: var(--muted); fill: none; }
.v-sand { fill: var(--sand); }
.v-pipe { stroke: var(--pipe); }
.v-main { fill: var(--pipe); }
.v-accent { stroke: var(--accent); }
.v-accent-fill { fill: var(--accent); }
.v-lead { stroke: var(--ink); stroke-width: 1.2; stroke-dasharray: 3 3; }
.v-house { fill: var(--surface); stroke: var(--ink); stroke-width: 2; }
.v-basement { fill: var(--tint); stroke: var(--ink); stroke-width: 2; }
.v-walk { fill: var(--line); }
.v-road { fill: var(--road); }
.v-trench { stroke: var(--bad); opacity: .85; }
.v-shaft { fill: var(--accent); }
.v-underground { stroke: var(--accent); stroke-dasharray: 8 6; }
.v-ground { stroke: var(--ink); }
.v-bad { fill: var(--bad); }
.v-good { fill: var(--good); }
.v-x { stroke: #fff; stroke-linecap: round; stroke-linejoin: round; }
.step-ic { width: 40px; height: 40px; flex: none; color: var(--accent); }
.steps .head { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.steps .head strong { margin: 0; }

/* Şema renkleri */
.d-soil { fill: var(--soil); }
.d-soil2 { fill: var(--soil-deep); }
.d-line { stroke: var(--deep-ink); }
.d-pipe { stroke: var(--pipe); }
.d-tunnel { stroke: var(--accent); }
.d-good { fill: var(--good); }
.d-bad { fill: var(--bad); }
.d-text { fill: var(--deep-ink); font-family: var(--body); }
.d-soiltext { fill: var(--soil-ink); font-family: var(--body); }
.d-tuneltext { fill: var(--tunnel-ink); font-family: var(--body); }
.d-house { fill: color-mix(in srgb, var(--deep-ink) 14%, transparent); stroke: var(--deep-ink); }

/* Üretici eklentileri */
.hero h1.uzun { font-size: clamp(32px, 7.4vw, 84px); }
.hero h1, h2, h3 { overflow-wrap: break-word; }
html, body { margin: 0; }
@media (max-width: 400px) { .brand span { white-space: normal; line-height: 1.05; overflow: visible; text-overflow: clip; } }
@media (min-width: 961px) {
  .dock { flex-direction: column; display: flex; gap: 12px; }
  .dock .btn { width: 64px; height: 64px; min-height: 64px; padding: 0; border-radius: 50%; font-size: 0; gap: 0; }
  .dock .btn::after { border-radius: 50%; }
  .dock .btn svg { width: 30px; height: 30px; }
}
.crumbs a { color: inherit; }
.hero-sm .wrap { grid-template-columns: 1fr; padding-block: 32px 44px; }
.hero-sm h1 { font-size: clamp(38px, 6.4vw, 64px); }
.hero-sm .lead { max-width: 40em; }
.il-grid { display: grid; gap: 22px; grid-template-columns: 1fr; margin-top: 12px; }
@media (min-width: 700px) { .il-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .il-grid { grid-template-columns: 1fr 1fr 1fr; } }
.il-grid h3 { margin: 0 0 8px; font-size: 22px; }
.il-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.il-grid a, .chip { display: inline-block; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-size: 15px; background: var(--surface); }
.il-grid a:hover, .chip:hover { border-color: var(--accent); color: var(--accent); }
.related { margin: 0 0 48px; }
.related ul { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.link-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 10px; }
.link-list a { display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); text-decoration: none; font-weight: 600; }
.link-list a:hover { border-color: var(--accent); }
.link-list small { display: block; font-weight: 400; color: var(--muted); font-size: 15px; margin-top: 2px; }
article a:not(.btn):not(.mini-cta) { color: var(--accent); text-underline-offset: 3px; }
.site-footer { background: var(--deep); color: var(--deep-ink); font-size: 15px; }
.site-footer .wrap { padding-block: 36px 28px; display: grid; gap: 28px; grid-template-columns: 1fr; }
@media (min-width: 860px) { .site-footer .wrap { grid-template-columns: 1.1fr 2fr 1.1fr; } }
.site-footer h2 { font-size: 20px; margin: 0 0 10px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.site-footer a { text-decoration: none; opacity: .9; }
.site-footer a:hover { text-decoration: underline; opacity: 1; }
.site-footer .il-links { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.site-footer .bottom { grid-column: 1 / -1; border-top: 1px solid color-mix(in srgb, var(--deep-ink) 20%, transparent); padding-top: 16px; opacity: .8; }
.site-footer .num { font-family: var(--mono); font-size: 20px; user-select: all; }
.contact-grid { display: grid; gap: 18px; grid-template-columns: 1fr; margin: 0 0 40px; }
@media (min-width: 760px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px; display: grid; gap: 12px; align-content: start; }
.contact-card h2 { font-size: 28px; margin: 0; }
.contact-card .num { font-family: var(--mono); font-size: 26px; user-select: all; }
.notfound { padding-block: 64px; }