/* =========================
   Temel Stil Değerleri
========================== */
:root {
  --bg: #f8fafc;
  --panel: #ffffff;
  --surface: #0b1220;
  --content: #0f172a;
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --white: #ffffff;
  --primary: #0f172a;
  --primary-ink: #f8fafc;
  --accent: #ffb703;
  --accent-ink: #111827;
  --bg-soft: #f8fafc;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 16px;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --container: 1200px;
}

/* Reset + temel tipografi */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji"; color: var(--text); background: var(--bg); }
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: 24px; }
.btn { display: inline-flex; align-items: center; gap: .6rem; padding: .9rem 1.2rem; border-radius: 999px; font-weight: 600; border: 1px solid transparent; transition: .2s ease; cursor: pointer; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(0.95); transform: translateY(-1px); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }
.btn-ghost:hover { background: #f1f5f9; transform: translateY(-1px); }
.highlight { color: var(--accent); }

/* Top bar */
.topbar { background: var(--surface); color: #cbd5e1; font-size: .9rem; }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; padding: .5rem 0; }
.topbar .meta { display: flex; gap: 1rem; opacity: .9; }

/* Header / Nav */
header { position: sticky; top: 0; z-index: 50; background: transparent; transition: background-color .3s, box-shadow .3s; }
header.scrolled-header { background: var(--panel); box-shadow: var(--shadow-sm); }
nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; }
.brand { display: flex; align-items: center; gap: .8rem; }
.logo-img { width: 90px; height: 90px; object-fit: contain; border-radius: 12px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm); padding: 4px; }
.brand .title { font-weight: 800; letter-spacing: .2px; color: var(--ink); }
.menu { display: flex; gap: 1.2rem; align-items: center; }
.menu a { padding: .6rem .8rem; border-radius: 10px; opacity: .85; transition: .2s ease; }
.menu a:hover { background: #f1f5f9; opacity: 1; }
.hamburger { display: none; border: 1px solid var(--line); border-radius: 12px; padding: .6rem; background: var(--panel); cursor: pointer; }

/* Mobil Menü */
.mobile-menu {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  z-index: 100;
  color: var(--white);
  transform: translateX(-100%);
  opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  display: flex;
  flex-direction: column;
}
.mobile-menu.open { transform: translateX(0); opacity: 1; }
.mobile-menu .menu-header { display: flex; justify-content: flex-end; padding: 1.5rem 1rem; }
.mobile-menu .menu-header button { font-size: 2rem; background: none; border: none; color: var(--white); cursor: pointer; }
.mobile-menu .menu-items { display: flex; flex-direction: column; gap: 1.2rem; align-items: center; justify-content: center; flex-grow: 1; }
.mobile-menu .menu-items a { font-size: 1.5rem; padding: 1rem; border-radius: 10px; transition: .2s; }
.mobile-menu .menu-items a:hover { background: rgba(255, 255, 255, 0.1); }

/* Hero */
.hero { 
  position: relative; isolation: isolate;
  background: radial-gradient(800px 300px at 10% -10%, #93c5fd44, transparent 60%),
              radial-gradient(1000px 400px at 80% -10%, #fde68a55, transparent 60%),
              linear-gradient(180deg, var(--panel) 0%, var(--bg-soft) 100%);
}
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 2rem; padding: 64px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: .6rem; padding: .35rem .7rem; border-radius: 999px; border: 1px dashed var(--line); color: var(--text); background: var(--panel); }
h1 { font-size: clamp(2rem, 2.6vw + 1rem, 3.2rem); line-height: 1.1; margin: .6rem 0 1rem; }
.lead { font-size: 1.125rem; color: var(--muted); max-width: 58ch; }
.cta { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.4rem; }
.hero-card { background: var(--surface); color: #e2e8f0; border-radius: var(--radius); padding: 1.2rem; box-shadow: var(--shadow-lg); }
.hero-card .item { display: flex; align-items: flex-start; gap: .9rem; padding: .7rem 0; }
.badge { display: inline-flex; align-items: center; gap: .5rem; padding: .3rem .6rem; border-radius: 999px; background: #111827; color: #e5e7eb; font-size: .82rem; }
.hero-card .item p { margin: .2rem 0 0; color: #94a3b8; }

/* Sayılarla Güven */
.stats { background: var(--panel); border-top: 1px solid var(--line); }
.stats .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; padding: 28px 0; }
.stat { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 16px; padding: 18px; text-align: center; }
.stat h3 { font-size: 1.7rem; margin: 0; color: var(--ink); }
.stat p { margin: .3rem 0 0; color: var(--muted); }

/* Hizmetler */
section { padding: 64px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 24px; }
.section-head h2 { font-size: clamp(1.6rem, 1.6vw + 1rem, 2.2rem); margin: 0; color: var(--ink); }
.kicker { color: var(--ink); background: #fffbeb; border: 1px solid #fde68a; display: inline-flex; padding: .35rem .6rem; border-radius: 10px; font-weight: 600; }
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 20px; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card h3 { margin: .6rem 0; color: var(--ink); }
.card p { color: var(--muted); }
.icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--bg-soft); }

/* Projeler */
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.project { border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: linear-gradient(135deg, #e2e8f0, #f8fafc); box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease; }
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.project img { aspect-ratio: 16 / 10; object-fit: cover; }
.project .meta { padding: 16px; background: var(--panel); }
.tag { display: inline-flex; gap: .4rem; align-items: center; background: #ecfeff; color: #0e7490; border: 1px solid #a5f3fc; padding: .25rem .55rem; border-radius: 999px; font-size: .82rem; }
.project .meta p { color: var(--muted); }

/* Süreç */
.process { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }
.step { background: var(--panel); border: 1px dashed var(--line); border-radius: 16px; padding: 18px; }
.step h4 { margin: .4rem 0; color: var(--ink); }

/* Referans Logoları */
.logos { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; opacity: .85; }
.logo-box { border: 1px solid var(--line); border-radius: 14px; background: var(--panel); display: grid; place-items: center; height: 64px; }

/* Testimonials */
.testimonials .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.quote { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px; box-shadow: var(--shadow-sm); }
.quote p { margin: 0 0 .8rem; color: var(--text); }
.quote strong { color: var(--ink); }

/* Contact */
.contact { 
  display: grid; 
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .contact {
    grid-template-columns: 1.1fr .9fr;
    gap: 1.2rem;
  }
}

/* İletişim Formu */
.contact-form-wrapper {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}

.field { 
  display: flex; 
  flex-direction: column; 
  gap: .4rem; 
  margin-bottom: 14px; 
}

.field label { 
  font-weight: 600; 
  color: var(--ink); 
}

.field input, .field textarea, .field select { 
  padding: .9rem; 
  border: 1px solid #cbd5e1; 
  border-radius: 12px; 
  font: inherit; 
}

.field input:focus, .field textarea:focus, .field select:focus { 
  outline: 3px solid #e0f2fe; 
  border-color: #38bdf8; 
}

.field .error-message { 
  color: var(--danger); 
  font-size: .85rem; 
  margin-top: .2rem; 
  opacity: 0; 
  transition: opacity .3s ease; 
}

.field .error-message.visible { 
  opacity: 1; 
}

/* Harita ve Bilgiler */
.contact-details-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.map-container {
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  padding-bottom: 60%; /* Oran için, 16:9 için %56.25, 4:3 için %75 */
  height: 0;
  border: 1px solid var(--line);
}

.map-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.contact-info {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  display: grid;
  gap: .4rem;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .8rem;
}

.contact-list li {
  display: flex;
  flex-direction: column;
}

.contact-list li strong {
  color: var(--ink);
  margin-bottom: .2rem;
}

.contact-list li span a {
  padding-right: .5rem;
}

/* Footer */
footer { background: var(--surface); color: #cbd5e1; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 1.2rem; padding: 48px 0; }
footer a { opacity: .9; transition: opacity .2s ease; }
footer a:hover { opacity: 1; }
.copyright { border-top: 1px solid #1f2937; padding: 14px 0; color: #94a3b8; }

/* Responsive */
@media (max-width: 1024px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-card { margin-top: 2rem; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .menu { display: none; }
  .hamburger { display: inline-flex; }
  .stats .grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .logos { grid-template-columns: repeat(2, 1fr); }
  .testimonials .grid { grid-template-columns: 1fr; }
  .contact-details-wrapper {
    flex-direction: column;
    gap: 1.2rem;
  }
}

@media (max-width: 480px) {
  .hero-card { padding: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats .grid { gap: .5rem; }
}