/* ───────────────────────────────────────────────────────────────────────────
   Piklon Landing — Hafif, mobile-first, dark-mode varsayılan
   Bağımlılık yok. ~6 KB gzip hedefi.
   ─────────────────────────────────────────────────────────────────────────── */

:root {
  --bg:           #FFFFFF;
  --bg-soft:      #F8FAFC;
  --bg-card:      #FFFFFF;
  --border:       #E2E8F0;
  --text:         #0F172A;
  --text-dim:     #475569;
  --text-muted:   #64748B;
  --primary:      #0284C7;
  --primary-700:  #0369A1;
  --primary-soft: rgba(2, 132, 199, 0.08);
  --accent:       #0EA5E9;
  --success:      #16A34A;
  --danger:       #DC2626;
  --warning:      #D97706;
  --radius:       12px;
  --radius-lg:    16px;
  --shadow:       0 6px 24px rgba(15,23,42,0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Poppins", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--primary); }
strong { color: var(--text); font-weight: 600; }
ul { list-style: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Header ───────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
}
.brand {
  display: flex; align-items: center;
}
.brand img {
  height: 56px;
  width: auto;
  object-fit: contain;
  display: block;
}
.nav-links {
  display: flex; align-items: center; gap: 22px;
}
.nav-links a {
  color: var(--text-dim); font-size: 0.95rem; font-weight: 500;
}
.nav-links a:hover { color: var(--text); }
.lang-link {
  border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 6px;
  font-size: 0.8rem !important; letter-spacing: 0.05em;
}
/* Header CTA — minimalist (sadece nav içinde) */
.nav-links .btn {
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 6px;
  letter-spacing: 0;
}
@media (max-width: 720px) {
  .nav-links { gap: 12px; }
  .nav-links a:not(.btn):not(.lang-link) { display: none; }
}

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff !important;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-700);
  border-color: var(--primary-700);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--text) !important;
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--bg-soft);
  border-color: var(--accent);
}
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }

/* ── Hero — derin lacivert (alt geçiş yok, protokoller bölümü devam eder) ── */
.hero {
  padding: 110px 0 70px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse at center top, rgba(56, 189, 248, 0.12) 0%, transparent 55%),
    linear-gradient(180deg, #07091C 0%, #0A0F25 100%);
  color: #fff;
}
.hero h1 {
  font-size: clamp(2.2rem, 5.8vw, 3.8rem);
  font-weight: 500;             /* INCE — modern landing tarzı */
  line-height: 1.15;
  max-width: 960px;
  margin: 0 auto 28px;
  letter-spacing: -0.025em;
  color: #fff;
}
.accent { color: #7DD3FC; }
.hero .accent {
  color: #7DD3FC;
  /* Ağırlık h1'den miras alınır (500) — kontrast sadece renkle */
}
.hero .lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  font-weight: 400;
  color: #CBD5E1;
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.65;
}
.hero strong { font-weight: 600; }
.hero strong { color: #fff; }
.cta-row {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero .btn-ghost {
  color: #fff !important;
  border-color: rgba(255, 255, 255, 0.35);
  background: transparent;
}
.hero .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #7DD3FC;
}

/* Stats strip — sosyal kanıt (hero alt) */
.stats-strip {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 40px 70px;
  margin: 56px 0 0;
  padding: 0;
  list-style: none;
}
.stats-strip li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.stat-num {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 400;
  color: #7DD3FC;
  letter-spacing: -0.02em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat-num .plus,
.stat-num .unit {
  font-size: 0.6em;
  font-weight: 400;
  color: rgba(125, 211, 252, 0.75);
  margin-left: 1px;
}
.stat-label {
  font-size: 0.82rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #94A3B8;
}
@media (max-width: 640px) {
  .stats-strip { gap: 28px 40px; margin-top: 40px; }
}
/* ── Protocols section — lacivert (hero ile devamlı), beyaz logo cardları ── */
.protocols-section {
  padding: 30px 0 70px;
  background: linear-gradient(180deg, #0A0F25 0%, #0F162F 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.proto-eyebrow {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #94A3B8;
  margin-bottom: 32px;
}
.protocol-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 18px 22px;
  margin: 0;
  padding: 0;
}
.protocol-strip li {
  list-style: none;
  line-height: 0;
  background: #ffffff;
  border-radius: 14px;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  height: 84px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.25);
  transition: transform .15s, box-shadow .15s;
}
.protocol-strip li:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(125, 211, 252, 0.25);
}
.protocol-strip img {
  height: 50px;
  width: auto;
  max-width: 170px;
  object-fit: contain;
}
@media (max-width: 640px) {
  .protocol-strip { gap: 14px 14px; }
  .protocol-strip li { min-width: 130px; height: 70px; padding: 10px 16px; }
  .protocol-strip img { height: 38px; }
}

/* ── Sections genel ────────────────────────────────────────────────────── */
section { padding: 70px 0; }
section h2 {
  font-size: clamp(1.7rem, 3.8vw, 2.6rem);
  font-weight: 600;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* ── Features (özellik kartları) ───────────────────────────────────────── */
.features { background: var(--bg-soft); }
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform .15s, border-color .15s;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}
.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text);
}
.card p { color: var(--text-dim); font-size: 0.95rem; }

/* ── Showcase — ürün ekran görüntüleri (zigzag) ────────────────────────── */
.showcase {
  background: #ffffff;
  padding: 90px 0;
}
.showcase-block {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}
.showcase-block:last-child { margin-bottom: 0; }
.showcase-block.reverse {
  grid-template-columns: 1.2fr 1fr;
}
.showcase-block.reverse .showcase-text { order: 2; }
.showcase-block.reverse .showcase-image { order: 1; }

.showcase-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--primary);
  margin-bottom: 12px;
}
.showcase-text h3 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.showcase-text > p {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 20px;
}
.showcase-text .check-list li {
  color: var(--text-dim);
}

.showcase-image {
  position: relative;
}
.showcase-image img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow:
    0 20px 50px -12px rgba(15, 23, 42, 0.18),
    0 6px 18px -6px rgba(15, 23, 42, 0.08);
  transition: transform .25s, box-shadow .25s;
}
.showcase-image img:hover {
  transform: translateY(-4px);
  box-shadow:
    0 28px 60px -14px rgba(15, 23, 42, 0.25),
    0 10px 24px -8px rgba(15, 23, 42, 0.12);
}

@media (max-width: 880px) {
  .showcase { padding: 60px 0; }
  .showcase-block,
  .showcase-block.reverse {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 56px;
  }
  .showcase-block.reverse .showcase-text { order: 1; }
  .showcase-block.reverse .showcase-image { order: 2; }
}

/* ── Solutions — koyu lacivert bölüm ──────────────────────────────────── */
.solutions {
  background: linear-gradient(180deg, #07091C 0%, #0C1230 100%);
  color: #E2E8F0;
}
.solutions h2 { color: #ffffff; }
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 24px;
}
.solution-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(6px);
  transition: border-color .15s, transform .15s, background .15s;
}
.solution-card:hover {
  border-color: rgba(125, 211, 252, 0.5);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}
.solution-card h3 {
  font-size: 1.3rem;
  margin-bottom: 14px;
  color: #7DD3FC;
}
.solution-card > p {
  color: #CBD5E1;
  margin-bottom: 20px;
}
.check-list li {
  padding-left: 28px;
  position: relative;
  margin-bottom: 10px;
  color: #CBD5E1;
  font-size: 0.95rem;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #4ADE80;
  font-weight: 700;
}

/* ── FAQ ──────────────────────────────────────────────────────────────── */
.faq { background: var(--bg-soft); }
.faq .container { max-width: 820px; }
.faq details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  padding: 0;
  overflow: hidden;
}
.faq summary {
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  list-style: none;
  position: relative;
  padding-right: 50px;
  user-select: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--accent);
  transition: transform .2s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p {
  padding: 0 24px 20px;
  color: var(--text-dim);
  font-size: 0.97rem;
}

/* ── Contact — koyu lacivert ──────────────────────────────────────────── */
.contact {
  background: linear-gradient(180deg, #07091C 0%, #0A0F25 100%);
  color: #E2E8F0;
}
.contact h2 { color: #ffffff; }
.contact .lead {
  color: #CBD5E1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.contact .container { max-width: 720px; }
.contact-form {
  margin-top: 32px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(6px);
}
.contact-form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
@media (max-width: 640px) {
  .contact-form .row { grid-template-columns: 1fr; }
}
.contact-form label {
  display: block;
  margin-bottom: 16px;
}
.contact-form label > span {
  display: block;
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-bottom: 6px;
  font-weight: 500;
}
.contact-form label > span em {
  color: #F87171;
  font-style: normal;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #F8FAFC;
  padding: 11px 14px;
  border-radius: 8px;
  font: inherit;
  font-size: 0.95rem;
  transition: border-color .15s, background .15s;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(203, 213, 225, 0.4); }
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #7DD3FC;
  background: rgba(255, 255, 255, 0.1);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form .honeypot {
  position: absolute;
  left: -9999px;
  visibility: hidden;
}
.contact-form button {
  width: 100%;
  margin-top: 8px;
}
#contact-status {
  margin-top: 14px;
  font-size: 0.93rem;
  min-height: 1.2em;
  text-align: center;
}
#contact-status.success { color: #4ADE80; }
#contact-status.error   { color: #F87171; }

.alt-contact {
  margin-top: 32px;
  text-align: center;
  color: #CBD5E1;
  font-size: 0.95rem;
}
.alt-contact a { color: #7DD3FC; }
.alt-contact a:hover { color: #BAE6FD; }
.alt-contact ul {
  display: flex; justify-content: center; gap: 24px; flex-wrap: wrap;
  margin-top: 10px;
}

/* ── Footer — koyu lacivert ───────────────────────────────────────────── */
.site-footer {
  background: #04061A;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 56px 0 28px;
  color: #CBD5E1;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}
.footer-grid h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-grid ul li { margin-bottom: 10px; }
.footer-grid a { color: #94A3B8; font-size: 0.93rem; }
.footer-grid a:hover { color: #7DD3FC; }
.footer-brand { font-weight: 700; margin: 8px 0 4px; color: #ffffff; }
.footer-logo {
  height: 44px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}
.muted { color: #94A3B8; font-size: 0.9rem; line-height: 1.55; }
.copyright {
  text-align: center;
  color: #64748B;
  font-size: 0.82rem;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}