/* ============================================================
   Müştericep — Tanıtım Sitesi Stilleri
   Marka: Lacivert (#1e3a8a) + Turkuaz (#14b8a6)
   ============================================================ */

:root {
  /* Renk tokenları */
  --navy-900: #172e6e;
  --navy-800: #1e3a8a;
  --navy-700: #274494;
  --teal-600: #0d9488;
  --teal-500: #14b8a6;
  --teal-400: #2dd4bf;
  --teal-50:  #f0fdfa;
  --ink-900:  #0f172a;
  --ink-600:  #475569;
  --ink-400:  #94a3b8;
  --line:     #e2e8f0;
  --bg:       #ffffff;
  --bg-soft:  #f8fafc;

  /* Tipografi */
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Manrope", var(--font-body);

  /* Ölçüler */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(30, 58, 138, 0.10);
  --shadow-lg: 0 24px 60px rgba(30, 58, 138, 0.16);
  --container: 1160px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-900);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--navy-900);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }

p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: var(--teal-600); text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--teal-400);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.container-narrow { max-width: 820px; }

.text-accent { color: var(--teal-500); }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.8em 1.6em;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--teal-500);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(20, 184, 166, 0.35);
}
.btn-primary:hover { background: var(--teal-600); box-shadow: 0 10px 24px rgba(20, 184, 166, 0.42); }

.btn-ghost {
  background: transparent;
  color: var(--navy-800);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--navy-800); }

.btn-outline {
  background: transparent;
  color: var(--navy-800);
  border-color: var(--navy-800);
}
.btn-outline:hover { background: var(--navy-800); color: #ffffff; }

.btn-light {
  background: #ffffff;
  color: var(--navy-800);
  box-shadow: var(--shadow-md);
}
.btn-light:hover { background: var(--teal-50); }

.btn-lg { font-size: 1.05rem; padding: 0.95em 1.9em; }
.btn-sm { font-size: 0.9rem; padding: 0.6em 1.3em; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand-logo { width: 42px; height: 42px; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--navy-800);
  letter-spacing: -0.02em;
}
.brand-name-light { color: #ffffff; }
.brand-accent { color: var(--teal-500); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.main-nav > a:not(.btn) {
  font-weight: 600;
  font-size: 0.97rem;
  color: var(--ink-600);
  transition: color 0.15s ease;
}
.main-nav > a:not(.btn):hover { color: var(--navy-800); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2.5px;
  border-radius: 2px;
  background: var(--navy-800);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 40px;
  background:
    radial-gradient(700px 380px at 85% -10%, rgba(45, 212, 191, 0.14), transparent 65%),
    radial-gradient(600px 400px at -10% 30%, rgba(30, 58, 138, 0.07), transparent 60%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--teal-600);
  background: var(--teal-50);
  border: 1px solid #ccfbf1;
  padding: 0.45em 1em;
  border-radius: 999px;
  margin-bottom: 20px;
}

.lead {
  font-size: 1.15rem;
  color: var(--ink-600);
  max-width: 34em;
  margin-top: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-note {
  margin-top: 18px;
  font-size: 0.9rem;
  color: var(--ink-400);
}
.hero-note i { color: var(--teal-500); margin-right: 0.35em; }

.hero-visual img { width: 100%; }

/* ---------- Güven şeridi ---------- */
.trust-strip {
  border-block: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 22px 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
}
.trust-item > i {
  font-size: 1.5rem;
  color: var(--teal-500);
  flex-shrink: 0;
}
.trust-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--navy-900);
}
.trust-item span { font-size: 0.85rem; color: var(--ink-600); }

/* ---------- Bölüm iskeleti ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-soft); }

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head p { color: var(--ink-600); }

.kicker {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--teal-600);
  margin-bottom: 10px;
}

/* ---------- Sorun → Çözüm ---------- */
.ps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.ps-card {
  border-radius: var(--radius);
  padding: 32px;
}
.ps-card h3 {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 1.2rem;
  margin-bottom: 18px;
}
.ps-card ul { display: grid; gap: 12px; }
.ps-card li {
  position: relative;
  padding-left: 26px;
  color: var(--ink-600);
}
.ps-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.ps-problem {
  background: #fff7f7;
  border: 1px solid #fecaca;
}
.ps-problem h3 { color: #b91c1c; }
.ps-problem h3 i { color: #ef4444; }
.ps-problem li::before { background: #fca5a5; }

.ps-solution {
  background: var(--teal-50);
  border: 1px solid #99f6e4;
}
.ps-solution h3 { color: var(--teal-600); }
.ps-solution h3 i { color: var(--teal-500); }
.ps-solution li::before { background: var(--teal-400); }

/* ---------- Özellik kartları ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #99f6e4;
}
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--teal-500), var(--teal-600));
  color: #ffffff;
  font-size: 1.3rem;
  margin-bottom: 18px;
  box-shadow: 0 6px 14px rgba(20, 184, 166, 0.3);
}
.feature-card p { color: var(--ink-600); margin: 0; font-size: 0.96rem; }

/* ---------- Adımlar ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px 26px;
  text-align: center;
}
.step-no {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--navy-800);
  color: #ffffff;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 4px 10px rgba(30, 58, 138, 0.35);
}
.step-icon {
  font-size: 1.6rem;
  color: var(--teal-500);
  margin: 8px 0 14px;
}
.step-card h3 { font-size: 1.05rem; }
.step-card p { color: var(--ink-600); font-size: 0.92rem; margin: 0; }

/* ---------- Kimler için ---------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.audience-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.audience-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.audience-card > i {
  font-size: 1.9rem;
  color: var(--navy-800);
  background: #eef2ff;
  width: 62px;
  height: 62px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  margin-bottom: 16px;
}
.audience-card h3 { font-size: 1.05rem; }
.audience-card p { color: var(--ink-600); font-size: 0.92rem; margin: 0; }

/* ---------- Fiyatlar ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
}
.price-featured {
  border: 2px solid var(--teal-500);
  box-shadow: var(--shadow-lg);
}
.badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--teal-500);
  color: #ffffff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  padding: 0.35em 1.1em;
  border-radius: 999px;
  white-space: nowrap;
}
.price-desc { color: var(--ink-600); font-size: 0.92rem; min-height: 2.8em; }
.price { margin: 6px 0 22px; }
.price .amount {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.6rem;
  color: var(--navy-900);
}
.price .period { color: var(--ink-400); font-weight: 600; margin-left: 2px; }

.price-list {
  display: grid;
  gap: 11px;
  margin-bottom: 28px;
  flex-grow: 1;
}
.price-list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--ink-600);
  font-size: 0.95rem;
}
.price-list i { color: var(--teal-500); flex-shrink: 0; }

/* ---------- SSS ---------- */
.faq { display: grid; gap: 12px; }
.faq-item {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-item[open] {
  border-color: #99f6e4;
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--navy-900);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "\2b";
  font-weight: 400;
  font-size: 1.3rem;
  color: var(--teal-500);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p {
  padding: 0 22px 20px;
  margin: 0;
  color: var(--ink-600);
}

/* ---------- CTA bandı ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--navy-900), var(--navy-700) 55%, var(--teal-600));
  color: #ffffff;
  padding: 64px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { color: #ffffff; margin-bottom: 8px; }
.cta-band p { color: rgba(255, 255, 255, 0.85); margin: 0; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-900);
  color: #cbd5e1;
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand p {
  margin-top: 16px;
  font-size: 0.93rem;
  color: #94a3b8;
  max-width: 28em;
}
.footer-col h3 {
  color: #ffffff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.footer-col a {
  display: flex;
  align-items: center;
  gap: 0.6em;
  color: #cbd5e1;
  padding: 5px 0;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}
.footer-col a:hover { color: var(--teal-400); }
.footer-col a i { color: var(--teal-400); width: 1.2em; text-align: center; }

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 20px;
  padding-bottom: 24px;
}
.footer-bottom p {
  margin: 0;
  font-size: 0.85rem;
  color: #64748b;
}

/* ---------- Scroll-reveal animasyonu ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .feature-card, .audience-card { transition: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .price-featured { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .hero { padding-top: 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-copy { text-align: center; }
  .hero-actions { justify-content: center; }
  .lead { margin-inline: auto; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .ps-grid { grid-template-columns: 1fr; }

  /* Mobil menü */
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: #ffffff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    padding: 16px 20px 22px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.22s ease, opacity 0.22s ease, visibility 0.22s;
  }
  .main-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }
  .main-nav > a:not(.btn) {
    padding: 12px 6px;
    font-size: 1.05rem;
    border-radius: 8px;
  }
  .main-nav > a:not(.btn):hover { background: var(--bg-soft); }
  .nav-cta { margin-top: 10px; }
}

@media (max-width: 560px) {
  .section { padding: 60px 0; }
  .feature-grid, .steps-grid, .audience-grid, .trust-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .cta-inner { justify-content: center; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}