/* Koçtürk Mekanik — site stylesheet */

:root {
  --ink: #141414;
  --ink-soft: #46433f;
  --paper: #f7f5f2;
  --paper-alt: #edeae5;
  --steel: #17171a;
  --steel-2: #212125;
  --steel-line: rgba(255, 255, 255, 0.12);
  --line: rgba(20, 20, 20, 0.12);
  --accent: #e84225;
  --accent-dark: #b8341b;
  --accent-soft: #f7d9d0;
  --on-steel: #f4f1ee;
  --on-steel-dim: #b7b3ae;
  --radius: 4px;
  --maxw: 1180px;
  --font-head: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

html, body { overflow-x: hidden; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.12;
  margin: 0 0 0.5em;
  font-weight: 600;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: inherit; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--accent);
  display: block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost-dark { border-color: var(--on-steel-dim); color: var(--on-steel); }
.btn-ghost-dark:hover { border-color: var(--on-steel); }
.btn-ghost-light { border-color: var(--line); color: var(--ink); }
.btn-ghost-light:hover { border-color: var(--ink); }
.btn-block { width: 100%; justify-content: center; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(23, 23, 26, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--steel-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: 20px;
}
.brand { display: flex; align-items: center; }
.brand img { height: 40px; width: auto; }
.brand svg { height: 40px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 34px; }
.main-nav a {
  text-decoration: none;
  color: var(--on-steel-dim);
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.88rem;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] { color: var(--on-steel); border-color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 16px; }

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--steel-line);
  border-radius: 999px;
  overflow: hidden;
  font-family: var(--font-head);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.lang-toggle button {
  background: transparent;
  border: none;
  color: var(--on-steel-dim);
  padding: 7px 14px;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
}
.lang-toggle button[aria-pressed="true"] { background: var(--accent); color: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--steel-line);
  border-radius: var(--radius);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--on-steel);
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* Hero */
.hero {
  position: relative;
  background: radial-gradient(ellipse at 78% 20%, #2a1712 0%, var(--steel) 55%), var(--steel);
  color: var(--on-steel);
  overflow: hidden;
  padding: 108px 0 96px;
}
.hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: -18%;
  width: 780px;
  height: 780px;
  background: url("../assets/logo-mark.svg") no-repeat center / contain;
  opacity: 0.08;
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; max-width: 760px; }
.hero p.lead {
  color: var(--on-steel-dim);
  font-size: 1.15rem;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; margin-top: 30px; flex-wrap: wrap; }

.page-hero {
  background: var(--steel);
  color: var(--on-steel);
  padding: 72px 0 56px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -6%;
  top: -30%;
  width: 460px;
  height: 460px;
  background: url("../assets/logo-mark.svg") no-repeat center / contain;
  opacity: 0.07;
  pointer-events: none;
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero p.lead { color: var(--on-steel-dim); max-width: 620px; font-size: 1.05rem; }

/* Strip of value props */
.strip {
  background: var(--paper-alt);
  border-bottom: 1px solid var(--line);
}
.strip .wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 34px;
  padding-bottom: 34px;
}
.strip-item {
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 10px;
}
.strip-item svg { flex: none; width: 22px; height: 22px; color: var(--accent); }

/* Generic section */
section.block { padding: 88px 0; }
section.block.tight { padding: 64px 0; }
.block-alt { background: var(--paper-alt); }
.block-dark { background: var(--steel); color: var(--on-steel); }
.block-dark p { color: var(--on-steel-dim); }
.block-dark h2, .block-dark h3 { color: var(--on-steel); }

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* About split */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.about-graphic {
  background: var(--steel);
  border-radius: var(--radius);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-graphic svg { width: 55%; opacity: 0.95; }
.about-graphic::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 40%, rgba(232, 66, 37, 0.18) 100%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.035) 0 2px, transparent 2px 14px);
}
.stat-row { display: flex; gap: 40px; margin-top: 28px; flex-wrap: wrap; }
.stat b {
  display: block;
  font-family: var(--font-head);
  font-size: 2rem;
  color: var(--accent);
  line-height: 1;
}
.stat span { font-size: 0.85rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.04em; }

/* Cards / grid */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card .icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper-alt);
  border-radius: var(--radius);
  color: var(--accent);
  margin-bottom: 20px;
}
.card .icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 10px; }
.card p { margin-bottom: 0; font-size: 0.95rem; }
.card a.card-link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--accent);
  text-decoration: none;
}

.service-detail {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}
.service-detail:last-child { border-bottom: 1px solid var(--line); }
.service-detail .icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: var(--steel);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-detail .icon svg { width: 28px; height: 28px; }
.service-detail h3 { margin-bottom: 6px; }
.service-detail ul { margin: 12px 0 0; padding-left: 18px; color: var(--ink-soft); font-size: 0.94rem; }
.service-detail li { margin-bottom: 4px; }

/* Process steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step { position: relative; padding-top: 8px; }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-head);
  font-size: 2.6rem;
  color: var(--accent);
  opacity: 0.55;
  display: block;
  margin-bottom: 8px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { font-size: 0.92rem; margin-bottom: 0; }

/* CTA banner */
.cta-banner {
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #fff;
  padding: 60px 0;
}
.cta-banner .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-banner h2 { margin-bottom: 6px; color: #fff; }
.cta-banner p { color: rgba(255,255,255,0.88); margin-bottom: 0; }
.cta-banner .btn-primary { background: #fff; color: var(--accent-dark); }
.cta-banner .btn-primary:hover { background: #f2ede9; }

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gallery-tile {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  background: var(--steel-2);
  border: 1px solid var(--steel-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--on-steel-dim);
  text-align: center;
  padding: 20px;
}
.gallery-tile svg { width: 34px; height: 34px; opacity: 0.55; }
.gallery-tile span { font-family: var(--font-head); text-transform: uppercase; font-size: 0.8rem; letter-spacing: 0.05em; }
.gallery-note {
  background: var(--paper-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-top: 40px;
}
.gallery-note p { margin: 0; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.contact-card {
  background: var(--steel);
  color: var(--on-steel);
  border-radius: var(--radius);
  padding: 36px 32px;
}
.contact-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--steel-line); }
.contact-item:last-child { border-bottom: none; padding-bottom: 0; }
.contact-item .icon {
  width: 40px; height: 40px; border-radius: var(--radius);
  background: rgba(232,66,37,0.15); color: var(--accent);
  display: flex; align-items: center; justify-content: center; flex: none;
}
.contact-item .icon svg { width: 20px; height: 20px; }
.contact-item h4 { margin: 0 0 4px; font-family: var(--font-head); text-transform: uppercase; font-size: 0.82rem; letter-spacing: 0.06em; color: var(--on-steel-dim); }
.contact-item p { margin: 0; color: var(--on-steel); }
.placeholder-tag {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: rgba(232,66,37,0.14);
  padding: 2px 8px;
  border-radius: 3px;
  margin-left: 8px;
  vertical-align: middle;
}

form.contact-form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field label {
  display: block;
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 0.98rem;
  background: #fff;
  color: var(--ink);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 0.85rem; color: var(--ink-soft); }
.form-status {
  display: none;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--paper-alt);
  border: 1px solid var(--line);
  font-size: 0.92rem;
}
.form-status.visible { display: block; }

/* Footer */
.site-footer {
  background: var(--steel);
  color: var(--on-steel-dim);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--steel-line);
}
.footer-brand img,
.footer-brand svg { height: 34px; margin-bottom: 16px; }
.footer-brand p { max-width: 320px; font-size: 0.92rem; }
.footer-col h4 {
  font-family: var(--font-head);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--on-steel);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-col a { text-decoration: none; color: var(--on-steel-dim); font-size: 0.92rem; }
.footer-col a:hover { color: var(--on-steel); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 10px;
}

/* Responsive */
@media (max-width: 980px) {
  .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-graphic { order: -1; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .strip .wrap { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions { gap: 8px; }
  .header-actions > .btn-primary { display: none; }
  .site-header .wrap { height: 68px; }
  .lang-toggle button { padding: 6px 10px; }
  body.nav-open .main-nav {
    display: flex;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--steel);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 28px;
    gap: 18px;
    border-bottom: 1px solid var(--steel-line);
  }
  .header-actions { gap: 10px; }
  .hero { padding: 72px 0 64px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .strip .wrap { grid-template-columns: 1fr; padding-top: 20px; padding-bottom: 20px; }
  section.block { padding: 60px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-banner .wrap { flex-direction: column; align-items: flex-start; }
  .gallery-grid { grid-template-columns: 1fr; }
}