/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Açık bölümler (beyaz) */
  --clr-bg:       #ffffff;
  --clr-surface:  #f8fafc;
  --clr-border:   #e2e8f0;
  --clr-text:     #1e293b;
  --clr-muted:    #64748b;
  --clr-heading:  #0f172a;

  /* Lacivert bölümler */
  --clr-navy:         #0c1e45;
  --clr-navy-card:    #162554;
  --clr-navy-border:  rgba(255,255,255,.1);
  --clr-navy-text:    #e2e8f0;
  --clr-navy-muted:   #94a3c4;

  /* Ortak */
  --clr-accent:   #2563eb;
  --clr-accent-h: #1d4ed8;
  --clr-white:    #ffffff;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow-sm:    0 1px 4px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
  --shadow:       0 8px 32px rgba(0,0,0,.12);
  --trans:        .2s ease;
  --max-w:        1160px;
  --section-py:   96px;
  font-size: 16px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding-block: var(--section-py); background: var(--clr-bg); }

/* Lacivert geçiş bölümleri */
.section--navy {
  background: var(--clr-navy);
  color: var(--clr-navy-text);
}

/* ── Section etiket & başlık ───────────────────────────────── */
.section__tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: rgba(37,99,235,.1);
  border: 1px solid rgba(37,99,235,.2);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section--navy .section__tag {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.2);
  color: #93c5fd;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--clr-heading);
  line-height: 1.25;
  margin-bottom: 16px;
}

.section--navy .section__title { color: var(--clr-white); }

.section__sub {
  color: var(--clr-muted);
  max-width: 560px;
  margin-inline: auto;
}

.section--navy .section__sub { color: var(--clr-navy-muted); }

.section__header {
  text-align: center;
  margin-bottom: 60px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  cursor: pointer;
  transition: all var(--trans);
  border: 2px solid transparent;
  line-height: 1;
  white-space: nowrap;
}

.btn--primary {
  background: var(--clr-accent);
  color: var(--clr-white);
  border-color: var(--clr-accent);
}
.btn--primary:hover {
  background: var(--clr-accent-h);
  border-color: var(--clr-accent-h);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(37,99,235,.35);
}

.btn--ghost {
  background: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border);
}
.btn--ghost:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

/* Ghost düğme lacivert arka plan üzerinde */
.section--navy .btn--ghost,
.hero--navy .btn--ghost {
  color: var(--clr-white);
  border-color: rgba(255,255,255,.3);
}
.section--navy .btn--ghost:hover { border-color: #93c5fd; color: #93c5fd; }

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

.btn--sm { padding: 8px 16px; font-size: .875rem; }
.btn--full { width: 100%; justify-content: center; }

/* ============================================================
   NAV — beyaz, temiz
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: 0 1px 0 var(--clr-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.nav__logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--clr-navy);
  letter-spacing: -.03em;
}
.nav__logo span { color: var(--clr-accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links a {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: color var(--trans);
}
.nav__links a:hover { color: var(--clr-navy); }

/* Telefon butonu nav'da */
.nav__links .btn--sm {
  background: var(--clr-navy);
  color: #fff;
  border-color: var(--clr-navy);
  font-size: .875rem;
  padding: 8px 18px;
}
.nav__links .btn--sm:hover { background: var(--clr-accent); border-color: var(--clr-accent); }

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-navy);
  border-radius: 2px;
  transition: all var(--trans);
}

.nav__mobile {
  display: none;
  flex-direction: column;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--clr-border);
  background: #fff;
  gap: 16px;
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: color var(--trans);
}
.nav__mobile a:hover { color: var(--clr-navy); }

/* ============================================================
   HERO — beyaz, modern
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: 108px 100px;
  background: var(--clr-bg);
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.18);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  color: var(--clr-heading);
  line-height: 1.12;
  letter-spacing: -.04em;
  margin-bottom: 24px;
}
.hero__title span { color: var(--clr-accent); }

.hero__sub {
  font-size: 1.125rem;
  color: var(--clr-muted);
  max-width: 560px;
  margin-bottom: 44px;
  line-height: 1.7;
}

.hero__ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* Sağ arka plan şekli */
.hero__bg-shape {
  position: absolute;
  top: -160px;
  right: -240px;
  width: 700px;
  height: 700px;
  background: radial-gradient(ellipse at 60% 40%, rgba(37,99,235,.07) 0%, transparent 65%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
}

/* İnce çizgi dekorasyon */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-border), transparent);
}

/* ============================================================
   STATS — lacivert
   ============================================================ */
.stats {
  background: var(--clr-navy);
  padding-block: 56px;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat {
  border-right: 1px solid var(--clr-navy-border);
  padding-inline: 16px;
}
.stat:last-child { border-right: none; }

.stat__number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--clr-white);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -.03em;
}
.stat__number span {
  font-size: 1.375rem;
  color: #93c5fd;
}
.stat__label {
  font-size: .875rem;
  color: var(--clr-navy-muted);
}

/* ============================================================
   ABOUT — beyaz
   ============================================================ */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__text p {
  color: var(--clr-muted);
  margin-bottom: 16px;
}
.about__text p:last-of-type { margin-bottom: 28px; }

.about__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about__list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--clr-text);
  font-size: .9375rem;
  font-weight: 500;
}
.about__list li::before {
  content: '';
  width: 7px;
  height: 7px;
  background: var(--clr-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.about__visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about__card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 26px;
  transition: box-shadow var(--trans), border-color var(--trans);
}
.about__card:hover {
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-sm);
}
.about__card--1 { grid-column: 1 / -1; }

.about__card-icon { font-size: 1.75rem; margin-bottom: 12px; }
.about__card strong { display: block; color: var(--clr-heading); font-weight: 700; margin-bottom: 6px; }
.about__card p { font-size: .875rem; color: var(--clr-muted); margin: 0; }

/* ============================================================
   PRODUCTS — lacivert
   ============================================================ */
.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  background: var(--clr-navy-card);
  border: 1px solid var(--clr-navy-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--trans);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.product-card:hover {
  border-color: #93c5fd;
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,.25);
}
.product-card__icon { font-size: 2rem; }
.product-card h3 { font-size: 1rem; font-weight: 600; color: var(--clr-white); }
.product-card p { font-size: .875rem; color: var(--clr-navy-muted); flex: 1; }
.product-card__link {
  font-size: .875rem;
  font-weight: 600;
  color: #93c5fd;
  transition: color var(--trans);
}
.product-card__link:hover { color: #fff; }

.product-card--cta {
  background: rgba(37,99,235,.2);
  border-color: rgba(37,99,235,.4);
  justify-content: center;
  align-items: flex-start;
}

/* ============================================================
   WHY — beyaz, kartlı
   ============================================================ */
.why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-item {
  padding: 32px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  background: var(--clr-surface);
  transition: box-shadow var(--trans), border-color var(--trans), transform var(--trans);
}
.why-item:hover {
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.why-item__num {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--clr-accent);
  background: rgba(37,99,235,.08);
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.why-item h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 8px;
}
.why-item p { font-size: .875rem; color: var(--clr-muted); line-height: 1.6; }

/* ============================================================
   PROCESS — lacivert
   ============================================================ */
.process__steps {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: center;
}

.process__step {
  flex: 1;
  max-width: 300px;
  background: var(--clr-navy-card);
  border: 1px solid var(--clr-navy-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: border-color var(--trans);
}
.process__step:hover { border-color: #93c5fd; }

.process__step-num {
  width: 48px;
  height: 48px;
  background: var(--clr-accent);
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: 18px;
}
.process__step h3 { font-size: 1.0625rem; font-weight: 700; color: var(--clr-white); margin-bottom: 8px; }
.process__step p { font-size: .875rem; color: var(--clr-navy-muted); line-height: 1.6; }

.process__arrow {
  font-size: 1.5rem;
  color: var(--clr-navy-muted);
  flex-shrink: 0;
  opacity: .6;
}

/* ============================================================
   CONTACT — beyaz
   ============================================================ */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact__info p {
  color: var(--clr-muted);
  margin-bottom: 36px;
  font-size: 1.0625rem;
  line-height: 1.7;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.contact__detail-icon {
  width: 40px;
  height: 40px;
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}
.contact__detail strong {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--clr-muted);
  margin-bottom: 3px;
}
.contact__detail a,
.contact__detail span {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--clr-text);
}
.contact__detail a:hover { color: var(--clr-accent); }

.contact__form {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.contact__form h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 28px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.form__group label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--clr-text);
}

.form__group input,
.form__group select,
.form__group textarea {
  background: var(--clr-white);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: var(--clr-text);
  font-size: .9375rem;
  font-family: inherit;
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--trans), box-shadow var(--trans);
  width: 100%;
}
.form__group input::placeholder,
.form__group textarea::placeholder { color: #b0bcc8; }
.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
.form__group select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.form__group textarea { resize: vertical; min-height: 100px; }

.form__note {
  font-size: .8125rem;
  color: var(--clr-muted);
  text-align: center;
  margin-top: 12px;
}

.form__success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: .9375rem;
  margin-top: 16px;
  text-align: center;
  font-weight: 500;
}

/* ============================================================
   FOOTER — lacivert
   ============================================================ */
.footer {
  background: var(--clr-navy);
  padding-block: 44px;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer .nav__logo { color: var(--clr-white); }

.footer__brand p {
  font-size: .875rem;
  color: var(--clr-navy-muted);
  margin-top: 6px;
}

.footer__links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer__links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--clr-navy-muted);
  transition: color var(--trans);
}
.footer__links a:hover { color: var(--clr-white); }

.footer__copy {
  font-size: .8125rem;
  color: var(--clr-navy-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .about__inner { grid-template-columns: 1fr; gap: 48px; }
  .about__visual { grid-template-columns: repeat(3, 1fr); }
  .about__card--1 { grid-column: auto; }
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .contact__inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  :root { --section-py: 64px; }

  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-right: none; border-bottom: 1px solid var(--clr-navy-border); padding-block: 20px; }
  .stat:last-child { border-bottom: none; }

  .products__grid { grid-template-columns: 1fr 1fr; }
  .why__grid { grid-template-columns: 1fr; }

  .process__steps { flex-direction: column; }
  .process__arrow { transform: rotate(90deg); }
  .process__step { max-width: 100%; width: 100%; }

  .form__row { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__links { justify-content: center; }
}

@media (max-width: 480px) {
  .products__grid { grid-template-columns: 1fr; }
  .about__visual { grid-template-columns: 1fr; }
  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { justify-content: center; }
  .contact__form { padding: 24px 20px; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
}