/* ==========================================================================
   CES Otomasyon Sistemleri — Design System
   ========================================================================== */

:root {
  --navy-deep: #0B2545;
  --navy: #13315C;
  --blue: #134074;
  --blue-muted: #8DA9C4;
  --paper: #EEF4ED;
  --white: #FFFFFF;
  --ink: #0B2545;

  --brand-mark: #1800AD;

  --line: rgba(11, 37, 69, 0.12);
  --line-on-dark: rgba(238, 244, 237, 0.16);

  --font-head: "Archivo", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;

  --container: 1180px;
  --radius: 3px;

  --shadow-soft: 0 1px 2px rgba(11, 37, 69, 0.06), 0 8px 24px rgba(11, 37, 69, 0.06);
}

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

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

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  color: var(--navy-deep);
}

h1 { font-size: clamp(2.4rem, 4.2vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 2.8vw, 2.35rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--blue);
}
.eyebrow.on-dark { color: var(--blue-muted); }
.eyebrow.on-dark::before { background: var(--blue-muted); }

.lede {
  font-size: 1.1rem;
  color: var(--navy);
  max-width: 60ch;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--blue);
  color: var(--white);
}
.btn-primary:hover { background: var(--navy-deep); }

.btn-ghost-dark {
  background: transparent;
  color: var(--paper);
  border-color: var(--line-on-dark);
}
.btn-ghost-dark:hover { border-color: var(--blue-muted); color: var(--blue-muted); }

.btn-ghost-light {
  background: transparent;
  color: var(--navy-deep);
  border-color: var(--line);
}
.btn-ghost-light:hover { border-color: var(--blue); color: var(--blue); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-deep);
  border-bottom: 1px solid var(--line-on-dark);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand img {
  height: 30px;
  width: auto;
  filter: brightness(0) saturate(100%) invert(94%) sepia(6%) saturate(315%) hue-rotate(180deg) brightness(101%) contrast(94%);
}

.site-header .brand img {
  height: 52px;
}
.brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--paper);
  text-transform: uppercase;
  line-height: 1.2;
}
.brand-name span {
  display: block;
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--blue-muted);
  text-transform: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-family: var(--font-head);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--blue-muted);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--paper);
  border-color: var(--blue-muted);
}

.nav-actions { display: flex; align-items: center; gap: 18px; }

.nav-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.86rem;
  color: var(--paper);
}
.nav-phone svg { width: 16px; height: 16px; color: var(--blue-muted); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--paper); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep);
  color: var(--blue-muted);
  padding: 64px 0 28px;
  margin-top: 120px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-on-dark);
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p { color: var(--blue-muted); font-size: 0.92rem; max-width: 32ch; }

.footer-col h4 {
  color: var(--paper);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 11px; }
.footer-col a, .footer-col li { font-size: 0.92rem; color: var(--blue-muted); }
.footer-col a:hover { color: var(--paper); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.82rem;
  color: rgba(141, 169, 196, 0.7);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--navy-deep);
  color: var(--paper);
  overflow: hidden;
  padding: 100px 0 120px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-on-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-on-dark) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 85%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 85%);
}
.hero-content {
  position: relative;
  max-width: 760px;
}
.hero h1 { color: var(--white); margin-top: 18px; }
.hero .lede { color: var(--blue-muted); margin-top: 20px; font-size: 1.15rem; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

.hero-mark {
  position: absolute;
  z-index: 2;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 460px;
  opacity: 0.5;
  filter: brightness(0) saturate(100%) invert(94%) sepia(6%) saturate(315%) hue-rotate(180deg) brightness(101%) contrast(94%);
}

/* ---------- Page header (inner pages) ---------- */
.page-header {
  background: var(--navy-deep);
  color: var(--paper);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-header .lede { color: var(--blue-muted); margin-top: 16px; }
.page-header h1 { color: var(--white); }

/* ---------- Stat / trust strip ---------- */
.strip {
  background: var(--blue);
  color: var(--paper);
}
.strip .container {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
  padding-top: 36px;
  padding-bottom: 36px;
}
.strip-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.94rem;
}
.strip-item svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--blue-muted); }

/* ---------- Sections ---------- */
section { padding: 96px 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 52px;
  flex-wrap: wrap;
}
.section-head h2 { margin-top: 14px; margin-bottom: 0; max-width: 620px; }

/* ---------- Service cards ---------- */
.grid-services {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card {
  background: var(--paper);
  padding: 34px 28px;
  transition: background 0.2s ease;
}
.service-card:hover { background: var(--white); }
.service-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 22px;
}
.service-icon svg { width: 22px; height: 22px; }
.service-card h3 { margin-bottom: 10px; }
.service-card p { font-size: 0.93rem; color: var(--navy); margin-bottom: 0; }
.service-card .service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--blue);
}
.service-card .service-link svg { width: 13px; height: 13px; transition: transform 0.15s ease; }
.service-card:hover .service-link svg { transform: translateX(3px); }

/* ---------- Why / values ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 44px 56px;
}
.why-item { display: flex; gap: 20px; }
.why-num {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--blue-muted);
  border: 1px solid var(--line);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.why-item h3 { margin-bottom: 8px; }
.why-item p { font-size: 0.93rem; color: var(--navy); margin: 0; }

/* ---------- Process ---------- */
.section-dark {
  background: var(--navy-deep);
  color: var(--paper);
}
.section-dark h2 { color: var(--white); }
.section-dark .lede { color: var(--blue-muted); }

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 20px;
  border-top: 1px solid var(--line-on-dark);
}
.process-item {
  padding: 32px 26px 0;
  border-right: 1px solid var(--line-on-dark);
}
.process-item:last-child { border-right: none; }
.process-step {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--blue-muted);
  margin-bottom: 14px;
}
.process-item h3 { color: var(--white); }
.process-item p { color: var(--blue-muted); font-size: 0.9rem; margin: 0; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: var(--blue);
  color: var(--white);
  padding: 64px 0;
}
.cta-banner .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-banner h2 { color: var(--white); margin: 0; max-width: 560px; }
.cta-banner .btn-primary { background: var(--white); color: var(--navy-deep); }
.cta-banner .btn-primary:hover { background: var(--paper); }

/* ---------- Service detail rows (Hizmetler page) ---------- */
.service-row {
  display: grid;
  grid-template-columns: 0.9fr 1.6fr;
  gap: 56px;
  padding: 56px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.service-row:first-of-type { border-top: none; }
.service-row-head { display: flex; gap: 20px; align-items: flex-start; }
.service-row .service-icon { margin-bottom: 0; }
.service-row-tag {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue-muted);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.service-row-body ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
}
.service-row-body li {
  font-size: 0.9rem;
  color: var(--navy);
  padding-left: 18px;
  position: relative;
}
.service-row-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--blue);
}

/* ---------- About page ---------- */
.about-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.value-card { border-top: 3px solid var(--blue); padding-top: 20px; }
.value-card h3 { margin-bottom: 10px; }
.value-card p { font-size: 0.9rem; color: var(--navy); margin: 0; }

/* ---------- Contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact-info-list { list-style: none; margin: 28px 0 0; padding: 0; display: flex; flex-direction: column; gap: 22px; }
.contact-info-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-list .service-icon { margin-bottom: 0; flex-shrink: 0; }
.contact-info-list strong { display: block; font-family: var(--font-head); font-size: 0.92rem; margin-bottom: 3px; }
.contact-info-list span, .contact-info-list a { font-size: 0.92rem; color: var(--navy); }

.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 8px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  font-family: var(--font-body);
  font-size: 0.94rem;
  color: var(--ink);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--blue);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.map-frame {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 40px;
}
.map-frame iframe { width: 100%; height: 340px; border: 0; display: block; }

/* ---------- Utilities ---------- */
.bg-white { background: var(--white); }
.text-center { text-align: center; }

/* ---------- Legal / policy content ---------- */
.legal-content { max-width: 74ch; }
.legal-content h2 { font-size: 1.35rem; margin-top: 2em; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p, .legal-content li { color: var(--navy); font-size: 0.98rem; }
.legal-content ul { padding-left: 20px; }
.legal-content .legal-updated { color: var(--blue-muted); font-size: 0.85rem; margin-top: 3em; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .grid-services { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .process-item { border-bottom: 1px solid var(--line-on-dark); padding-bottom: 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-hero-grid, .contact-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .service-row { grid-template-columns: 1fr; gap: 24px; }
  .service-row-body ul { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links, .nav-phone { display: none; }
  .nav-toggle { display: flex; }
  .nav.open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--navy-deep);
    padding: 20px 28px 28px;
    gap: 18px;
    border-bottom: 1px solid var(--line-on-dark);
  }
  .grid-services { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .hero { padding: 64px 0 80px; }
  .hero-mark { display: none; }
  .cta-banner .container { flex-direction: column; align-items: flex-start; }
}