/* Cemre Otomasyon — tanıtım sitesi
   Renkler logodan alındı: lacivert #022F60, marka mavisi #0A6AC3, açık mavi #CFE3F5. */

:root {
  --navy: #022F60;
  --navy-deep: #01203F;
  --blue: #0A6AC3;
  --blue-hover: #0858A3;
  --sky: #4BA3EA;
  --sky-soft: #CFE3F5;
  --sky-bg: #EAF3FC;
  --tint: #F4F8FC;
  --line: #D5E3F1;
  --text: #13233A;
  --muted: #4E6178;
  --ok: #22B45A;
  --warn: #F59E0B;

  --radius: 6px;
  --wrap: 1180px;
  --font: "Barlow", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }
h1, h2, h3 { color: var(--navy); line-height: 1.15; margin: 0; }
h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--navy); color: #fff; padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }

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

/* ---------- Ortak parçalar ---------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}

/* SCADA ekranındaki "çalışıyor" ışığı */
.led {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(34, 180, 90, 0.18);
}

.btn {
  display: inline-block;
  padding: 13px 24px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid var(--blue);
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--blue-hover); border-color: var(--blue-hover); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn-small { padding: 8px 16px; font-size: 0.98rem; }

.device-id {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 4px;
}

/* ---------- Üst bar ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.scrolled { border-bottom-color: var(--line); }

.header-row { display: flex; align-items: center; justify-content: space-between; height: 70px; }

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font-weight: 700; font-size: 1.35rem; letter-spacing: 0.05em; color: var(--navy); }
.brand-sub { font-weight: 600; font-size: 0.62rem; letter-spacing: 0.34em; color: var(--blue); margin-top: 3px; }

.nav { display: flex; align-items: center; gap: 28px; }
.nav a:not(.btn) { color: var(--text); text-decoration: none; font-weight: 500; }
.nav a:not(.btn):hover { color: var(--blue); }

.nav-toggle { display: none; }

/* ---------- Giriş ---------- */

.hero {
  position: relative;
  background-color: var(--sky-bg);
  /* SCADA tuvalindeki ızgara */
  background-image:
    linear-gradient(rgba(10, 106, 195, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 106, 195, 0.07) 1px, transparent 1px);
  background-size: 36px 36px;
  padding: 64px 0 96px;
  overflow: hidden;
}

.hero-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; }

.lead { font-size: 1.2rem; color: var(--muted); margin: 20px 0 30px; max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-points { list-style: none; padding: 0; margin: 32px 0 0; display: flex; flex-wrap: wrap; gap: 10px 26px; }
.hero-points li { position: relative; padding-left: 22px; font-weight: 500; color: var(--navy); }
.hero-points li::before {
  content: ""; position: absolute; left: 0; top: 0.5em;
  width: 10px; height: 10px; border-radius: 50%; background: var(--ok);
}

.hero-visual { position: relative; padding-bottom: 40px; }
.frame-screen {
  border: 8px solid var(--navy);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 50px -20px rgba(2, 47, 96, 0.45);
}
.frame-phone {
  position: absolute;
  width: 27%;
  right: -14px;
  bottom: 0;
  border: 6px solid var(--navy);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 18px 36px -12px rgba(2, 47, 96, 0.5);
}

/* Girişin altından akan su borusu (uygulamadaki boru animasyonu) */
.hero-pipe {
  position: absolute;
  left: 0; right: 0; bottom: 34px;
  height: 8px;
  background: var(--navy);
  border-radius: 4px;
  opacity: 0.9;
}
.hero-pipe::after {
  content: "";
  position: absolute;
  inset: 2px 0;
  background: repeating-linear-gradient(90deg, var(--sky) 0 18px, transparent 18px 30px);
  animation: akis 1.6s linear infinite;
}
@keyframes akis { to { background-position: 30px 0; } }
@keyframes akis-dikey { to { background-position: 0 30px; } }

/* ---------- Bölümler ---------- */

.section { padding: 96px 0; }
.section-tint { background: var(--tint); }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-intro { color: var(--muted); font-size: 1.12rem; margin-top: 16px; }

/* Hizmetler: kart yerine çizgilerle ayrılmış liste */
.services {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
}
.service {
  display: flex;
  gap: 20px;
  padding: 32px 32px 32px 0;
  border-bottom: 1px solid var(--line);
}
.service:nth-child(even) { padding: 32px 0 32px 32px; border-left: 1px solid var(--line); }
.service h3 { margin-bottom: 8px; }
.service p { color: var(--muted); }

.icon, .flow-node svg {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  fill: none;
  stroke: var(--blue);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Ürünler */
.products { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.product {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.product-photo { position: relative; aspect-ratio: 16 / 10; background: var(--sky-bg); }
.product-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.photo-empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--muted); font-size: 0.9rem;
}
.photo-empty svg { width: 120px; fill: none; stroke: var(--sky); stroke-width: 2; }

.product-body { padding: 28px 30px 32px; border-top: 4px solid var(--sky); }
.product-lead { color: var(--muted); margin: 6px 0 18px; font-size: 1.08rem; }

.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 28px; }
.checks li::before {
  content: "";
  position: absolute; left: 2px; top: 0.42em;
  width: 13px; height: 7px;
  border-left: 2.5px solid var(--blue);
  border-bottom: 2.5px solid var(--blue);
  transform: rotate(-45deg);
}

.product-next {
  margin-top: 28px;
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding: 28px 30px;
  border: 2px dashed var(--sky);
  border-radius: var(--radius);
  background: #fff;
}
.product-next p { color: var(--muted); margin-top: 6px; max-width: 60em; }
.next-badge {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #8a5a00;
  background: #FFF3D6;
  border: 1px solid #F3D18A;
  padding: 5px 10px;
  border-radius: 4px;
}

/* Uygulama */
.platforms { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.platforms li {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--tint);
  font-weight: 600;
  color: var(--navy);
}
.platforms small { font-weight: 400; color: var(--muted); }

.zoom { display: block; padding: 0; border: 0; background: none; cursor: zoom-in; width: 100%; }

.shot-main .zoom {
  border: 8px solid var(--navy);
  border-radius: 10px;
  overflow: hidden;
}
figure { margin: 0; }
figcaption { color: var(--muted); font-size: 0.95rem; margin-top: 12px; }

.app-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; margin-top: 64px; align-items: start; }

.features { list-style: none; padding: 0; margin: 0; counter-reset: f; }
.features li { padding: 18px 0 18px 46px; border-bottom: 1px solid var(--line); position: relative; counter-increment: f; }
.features li:first-child { padding-top: 0; }
.features li::before {
  content: counter(f, decimal-leading-zero);
  position: absolute; left: 0; top: 20px;
  font-family: var(--mono); font-size: 0.85rem; color: var(--blue);
}
.features li:first-child::before { top: 2px; }
.features h3 { font-size: 1.12rem; margin-bottom: 4px; }
.features p { color: var(--muted); }

.app-shots { display: grid; grid-template-columns: 1fr 0.42fr; gap: 20px; align-items: start; }
.app-shots .zoom { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.shot-phone .zoom { border: 5px solid var(--navy); border-radius: 18px; }

.note { margin-top: 32px; font-size: 0.88rem; color: var(--muted); }

/* Nasıl çalışır */
.section-dark { background: var(--navy); color: #D9E8F7; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .tag { color: var(--sky-soft); }

.flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; position: relative; }
/* düğümleri birbirine bağlayan, içinden su akan boru */
.flow::before {
  content: "";
  position: absolute;
  top: 37px; left: 40px; right: calc(33.33% - 40px);
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--sky) 0 18px, transparent 18px 30px), var(--navy-deep);
  border-radius: 3px;
  animation: akis 1.6s linear infinite;
}
.flow li { position: relative; }
.flow-node {
  display: grid; place-items: center;
  width: 80px; height: 80px;
  border-radius: 8px;
  background: var(--navy-deep);
  border: 2px solid var(--sky);
  margin-bottom: 22px;
  position: relative;
}
.flow-node svg { stroke: var(--sky-soft); }
.flow h3 { margin-bottom: 8px; }
.flow p { color: #B9CDE3; max-width: 22em; }

/* Deneyim */
.exp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.exp-grid h3 { margin-bottom: 18px; }

.skills ul { list-style: none; padding: 0; margin: 0 0 32px; }
.skills li { padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
.skills b { color: var(--navy); font-weight: 600; }

.case {
  padding: 22px 24px;
  background: var(--sky-bg);
  border-left: 4px solid var(--blue);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.sectors ul { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sectors li {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.97rem;
  line-height: 1.45;
}
.sectors li span { display: block; font-weight: 600; color: var(--navy); font-size: 1.05rem; margin-bottom: 4px; }

/* İletişim */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.contact-list li { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 20px 24px; border-bottom: 1px solid var(--line); font-size: 1.1rem; }
.contact-list li:last-child { border-bottom: 0; }
.contact-list a { font-weight: 600; text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }
.contact-label { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); padding-top: 4px; }

/* Alt bilgi */
.site-footer { background: var(--navy-deep); color: #9FB6CF; padding: 36px 0; font-size: 0.95rem; }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 32px; }
.footer-row .copy { margin-left: auto; }
.brand-light .brand-name { color: #fff; }
.brand-light .brand-sub { color: var(--sky); }

/* Sahadan kareler */
.field { margin-top: 64px; }
.field h3 { margin-bottom: 18px; }
.field-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.field-grid .zoom { aspect-ratio: 3 / 4; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--sky-bg); }
.field-grid img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Büyütme penceresi */
.lightbox { border: 0; padding: 0; background: transparent; max-width: 94vw; max-height: 92vh; }
.lightbox::backdrop { background: rgba(1, 20, 40, 0.85); }
.lightbox img { max-width: 94vw; max-height: 92vh; border-radius: 6px; }
.lightbox-close {
  position: fixed; top: 14px; right: 18px;
  width: 44px; height: 44px;
  font-size: 2rem; line-height: 1;
  color: #fff; background: rgba(255, 255, 255, 0.12);
  border: 0; border-radius: 50%; cursor: pointer;
}

/* ---------- Dar ekranlar ---------- */

@media (max-width: 960px) {
  .hero-grid, .app-grid, .exp-grid, .contact { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 40px 0 88px; }
  .frame-phone { right: 0; }
  .section { padding: 72px 0; }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: grid; place-items: center;
    width: 44px; height: 44px;
    border: 1px solid var(--line); border-radius: var(--radius);
    background: #fff; cursor: pointer;
  }
  .nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
    display: block; width: 20px; height: 2px; background: var(--navy); position: relative; transition: transform 0.2s;
  }
  .nav-toggle-bar::before, .nav-toggle-bar::after { content: ""; position: absolute; left: 0; }
  .nav-toggle-bar::before { top: -6px; }
  .nav-toggle-bar::after { top: 6px; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-6px) rotate(-45deg); }

  .nav {
    display: none;
    position: absolute; top: 70px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px;
  }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1.1rem; }
  .nav .btn { margin-top: 16px; text-align: center; }

  .services, .products { grid-template-columns: 1fr; }
  .service, .service:nth-child(even) { padding: 26px 0; border-left: 0; }

  .flow { grid-template-columns: 1fr; gap: 28px; }
  .flow::before {
    top: 40px; bottom: 80px; left: 37px; right: auto;
    width: 6px; height: auto;
    background: repeating-linear-gradient(180deg, var(--sky) 0 18px, transparent 18px 30px), var(--navy-deep);
    animation-name: akis-dikey;
  }
  .flow li { padding-left: 104px; min-height: 80px; }
  .flow-node { position: absolute; left: 0; top: 0; margin: 0; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }
  .wrap { padding: 0 16px; }
  .hero-actions .btn { flex: 1 1 100%; text-align: center; }
  .frame-screen { border-width: 5px; }
  .frame-phone { width: 32%; border-width: 4px; border-radius: 14px; }
  .product-next { flex-direction: column; gap: 14px; padding: 22px; }
  .product-body { padding: 22px 20px 26px; }
  .sectors ul { grid-template-columns: 1fr; }
  .field-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .field-grid figure:first-child { grid-column: 1 / -1; }
  .field-grid figure:first-child .zoom { aspect-ratio: 4 / 3; }
  .app-shots { grid-template-columns: 1fr 0.5fr; gap: 12px; }
  .contact-list li { grid-template-columns: 1fr; gap: 2px; padding: 16px 18px; }
  .footer-row .copy { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-pipe::after, .flow::before { animation: none; }
}