/* ==========================================================
   Dijital pazarlama ajansı - ana stil dosyası
   Palet: koyu lacivert, beyaz, elektrik mavisi
   ========================================================== */

:root {
  --navy: #0a1128;          /* ana koyu zemin */
  --navy-2: #11214f;        /* ikincil koyu zemin */
  --blue: #2f6bff;          /* elektrik mavisi vurgu */
  --blue-dark: #1b3fd0;     /* hover / koyu mavi */
  --ink: #141a2e;           /* açık zeminde metin */
  --muted: #5a6382;         /* ikincil metin */
  --line: #dfe4f2;          /* kenarlıklar */
  --soft: #f3f6fd;          /* açık bölüm zemini */
  --white: #ffffff;
  --radius: 14px;
  --font: "Segoe UI", "Helvetica Neue", Arial, system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-dark); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 0.6em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1em; max-width: 68ch; }

.container { width: min(1120px, 100% - 2.5rem); margin-inline: auto; }
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--blue); color: var(--white); padding: .6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.brand { display: flex; align-items: center; gap: .7rem; color: var(--white); text-decoration: none; font-weight: 700; font-size: 1.15rem; }
.main-nav { display: flex; align-items: center; gap: 1.6rem; }
.main-nav a { color: #cfd7f2; text-decoration: none; font-weight: 500; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--white); }
.main-nav a.btn { color: var(--white); }
.nav-toggle {
  display: none; background: transparent; color: var(--white);
  border: 1px solid rgba(255,255,255,.35); border-radius: 8px; padding: .45rem .9rem; font: inherit; cursor: pointer;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: .85rem 1.6rem; border-radius: 10px; border: 2px solid transparent;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background-color .2s, color .2s, border-color .2s;
}
.btn-small { padding: .5rem 1.1rem; }
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-dark); }
.btn-ghost { border-color: rgba(255,255,255,.4); color: var(--white); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-light { background: var(--white); color: var(--navy); }
.btn-light:hover { background: #e6ecff; }
.btn-outline-light { border-color: var(--white); color: var(--white); }
.btn-outline-light:hover { background: rgba(255,255,255,.12); }
.btn-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.8rem; }
.btn-row.center { justify-content: center; }

/* ---------- Hero (the one memorable element) ---------- */
.hero { background: linear-gradient(180deg, var(--navy) 0%, var(--navy-2) 100%); color: var(--white); padding: clamp(3rem, 7vw, 6rem) 0; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3rem; align-items: center; }
.hero .lead { color: #c3ccea; font-size: 1.2rem; }
.hero-img { border-radius: 24px; box-shadow: 0 30px 80px rgba(0,0,0,.45); }

/* ---------- Sections ---------- */
.section { padding: clamp(3rem, 6vw, 5.5rem) 0; }
.section-soft { background: var(--soft); }
.section-intro { color: var(--muted); font-size: 1.1rem; margin-bottom: 2.4rem; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.rounded { border-radius: 20px; }

/* Service cards */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.service-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.8rem;
  transition: border-color .2s, transform .2s;
}
.service-card:hover { border-color: var(--blue); transform: translateY(-3px); }
.service-card img { margin-bottom: 1.1rem; }
.service-card p { color: var(--muted); margin: 0; }

/* Why choose us: plain columns, divided by a thin rule */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; margin-top: 2rem; }
.why-grid > div { border-top: 3px solid var(--blue); padding-top: 1.1rem; }
.why-grid p { color: var(--muted); }

/* Process steps: genuine sequence, so numbered list */
.steps { list-style: none; counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; padding: 0; margin: 2rem 0 0; }
.steps li { counter-increment: step; position: relative; padding-top: 3.2rem; }
.steps li::before {
  content: counter(step); position: absolute; top: 0; left: 0;
  width: 2.4rem; height: 2.4rem; border-radius: 50%;
  background: var(--blue); color: var(--white); font-weight: 700; display: grid; place-items: center;
}
.steps p { color: var(--muted); }

/* Benefits */
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { padding: .7rem 0 .7rem 2rem; border-bottom: 1px solid var(--line); position: relative; }
.check-list li::before { content: ""; position: absolute; left: .2rem; top: 1.2rem; width: .8rem; height: .8rem; border-radius: 50%; background: var(--blue); }
.value-box { background: var(--navy); color: var(--white); border-radius: 20px; padding: 2.2rem; }
.value-box p { color: #c3ccea; }

/* CTA band */
.cta { background: var(--blue); color: var(--white); text-align: center; padding: clamp(3rem, 6vw, 5rem) 0; }
.cta p { margin-inline: auto; color: #e3ebff; }

/* ---------- Inner page header ---------- */
.page-head { background: var(--navy); color: var(--white); padding: clamp(2.5rem, 5vw, 4rem) 0; }
.page-head .lead { color: #c3ccea; margin: 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 3rem; align-items: start; }
.field { margin-bottom: 1.2rem; }
.field label { display: block; font-weight: 600; margin-bottom: .35rem; }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field textarea {
  width: 100%; padding: .8rem 1rem; font: inherit; color: var(--ink);
  border: 1px solid #b9c2dd; border-radius: 10px; background: var(--white);
}
.field input.invalid, .field textarea.invalid { border-color: #c62828; }
.field.check { display: grid; grid-template-columns: auto 1fr; gap: .6rem; align-items: start; }
.field.check label { font-weight: 400; margin: 0; }
.field.check .error { grid-column: 1 / -1; }
.error { color: #c62828; font-size: .92rem; margin: .3rem 0 0; min-height: 1em; }
.form-status { margin-top: 1rem; font-weight: 600; }
.form-status.ok { color: #1b7a3a; }
.form-status.fail { color: #c62828; }
.contact-info { background: var(--soft); border-radius: 20px; padding: 2rem; }
.contact-info dt { font-weight: 700; margin-top: 1rem; }
.contact-info dd { margin: 0; color: var(--muted); }

/* ---------- Long text (privacy policy) ---------- */
.prose { max-width: 820px; }
.prose h2 { font-size: 1.5rem; margin-top: 2.2rem; }
.prose li { margin-bottom: .4rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: #c3ccea; padding-top: 3.5rem; }
.site-footer a { color: #e3ebff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 2.5rem; }
.footer-brand { color: var(--white); font-weight: 700; font-size: 1.2rem; margin-bottom: .6rem; }
.footer-title { color: var(--white); font-weight: 600; margin-bottom: .6rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .4rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 2.5rem; padding: 1.2rem 0; font-size: .92rem; }
.footer-bottom p { margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: inline-block; }
  .main-nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 1rem;
    background: var(--navy); padding: 1.2rem 1.25rem 1.6rem; border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .main-nav.open { display: flex; }
  .card-grid, .why-grid, .steps, .footer-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}