/* ==========================================================
   PLC Tamiri — Tasarım Sistemi
   Palet:  --ink #1E2A33  --primary #0F5C82  --sky #4FA9D6
           --signal #F5A431  --success #2E9E6B  --bg #F6F8FA
   Tipografi: Space Grotesk (başlık) / Manrope (gövde) / IBM Plex Mono (veri)
   ========================================================== */

:root {
  --ink: #1E2A33;
  --ink-soft: #55666F;
  --primary: #0F5C82;
  --primary-dark: #0A4562;
  --sky: #4FA9D6;
  --signal: #F5A431;
  --success: #2E9E6B;
  --bg: #F6F8FA;
  --surface: #FFFFFF;
  --line: #E2E8ED;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Manrope', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 40, 60, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 40, 60, 0.10);
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { overflow-x: hidden; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; margin: 0 0 .5em; color: var(--ink); }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: var(--primary); }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--primary); color: #fff; padding: 10px 16px; z-index: 200; border-radius: 0 0 8px 0; }
.skip-link:focus { left: 0; }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-weight: 700; font-size: .95rem;
  padding: 14px 24px; border-radius: 999px; border: 2px solid transparent;
  cursor: pointer; text-decoration: none; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn-small { padding: 10px 18px; font-size: .85rem; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-signal { background: var(--signal); color: #402600; }
.btn-signal:hover { background: #e2951f; transform: translateY(-1px); }
.btn-outline { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 170; border-bottom: 1px solid var(--line); }
.site-header::before { content: ""; position: absolute; inset: 0; z-index: -1; background: rgba(246,248,250,.92); backdrop-filter: blur(8px); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { color: var(--primary); display: inline-flex; }
.brand-text { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -.01em; }
.main-nav { display: flex; gap: 28px; }
.main-nav a { color: var(--ink-soft); text-decoration: none; font-weight: 600; font-size: .95rem; padding: 6px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover, .main-nav a.active { color: var(--primary); border-color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.phone-pill { display: flex; align-items: center; gap: 6px; color: var(--ink); text-decoration: none; font-weight: 700; font-family: var(--font-mono); font-size: .9rem; }
.phone-pill svg { color: var(--success); }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; border: none; background: none; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; width: 22px; background: var(--ink); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero { padding: 64px 0 80px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; color: var(--primary); background: #E7F1F7; padding: 6px 14px; border-radius: 999px; margin-bottom: 18px; }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); animation: blink 2.4s ease-in-out infinite; }
.hero h1 { max-width: 620px; }
.hero-lead { font-size: 1.1rem; max-width: 540px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin: 28px 0 34px; }
.hero-trust { display: flex; gap: 26px; flex-wrap: wrap; padding-top: 22px; border-top: 1px solid var(--line); }
.hero-trust div { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 600; color: var(--primary); }
.hero-trust span { display: block; font-family: var(--font-body); font-size: .8rem; color: var(--ink-soft); font-weight: 500; }

/* ---- Signature element: HMI status panel mockup ---- */
.panel-mock {
  position: relative;
  background: linear-gradient(180deg, #17303F, #0F222E);
  border-radius: 20px;
  padding: 22px;
  box-shadow: var(--shadow-md);
  color: #EAF2F6;
}
.panel-mock::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: 20px;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 14px 14px;
  pointer-events: none;
}
.panel-topbar { display: flex; justify-content: space-between; align-items: center; font-family: var(--font-mono); font-size: .72rem; color: #7FA6BB; margin-bottom: 16px; }
.panel-leds { display: flex; gap: 6px; }
.panel-leds span { width: 8px; height: 8px; border-radius: 50%; background: #2F4C5C; }
.panel-leds span.on { background: var(--signal); box-shadow: 0 0 8px var(--signal); }
.panel-screen {
  background: #0B1B24; border: 1px solid #24404E; border-radius: 12px; padding: 22px;
  font-family: var(--font-mono); position: relative; min-height: 210px;
}
.panel-row { display: flex; justify-content: space-between; font-size: .78rem; color: #7FA6BB; margin-bottom: 14px; }
.panel-status { font-size: 1.5rem; font-weight: 600; display: flex; align-items: center; gap: 10px; margin: 18px 0 10px; }
.status-led { width: 12px; height: 12px; border-radius: 50%; background: var(--success); box-shadow: 0 0 10px var(--success); animation: blink 2.4s ease-in-out infinite; flex-shrink: 0; }
.status-fault { color: var(--signal); }
.status-fixed { color: #6FE3A8; }
.panel-sub { font-size: .82rem; color: #7FA6BB; }
.panel-bars { display: flex; gap: 4px; margin-top: 18px; align-items: flex-end; height: 34px; }
.panel-bars span { flex: 1; background: #23495C; border-radius: 2px; animation: bars 1.8s ease-in-out infinite; }
.panel-bars span:nth-child(2n) { animation-delay: .2s; }
.panel-bars span:nth-child(3n) { animation-delay: .4s; }
.panel-caption { position: absolute; bottom: -14px; right: 18px; background: var(--success); color: #06331d; font-family: var(--font-mono); font-size: .72rem; font-weight: 700; padding: 6px 12px; border-radius: 999px; box-shadow: var(--shadow-sm); }

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes bars { 0%, 100% { height: 30%; } 50% { height: 100%; } }

/* ---------- Trust strip ---------- */
.trust-strip { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 28px 0; }
.trust-strip .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; }
.trust-item { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: .92rem; color: var(--ink); flex: 1 1 200px; }
.trust-item svg { color: var(--primary); flex-shrink: 0; }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-tight { padding: 56px 0; }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head .eyebrow { background: #FDF0DC; color: #8A5A0C; }
.section-alt { background: var(--surface); }

/* ---------- Service cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease; }
.service-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: transparent; }
.service-icon { width: 46px; height: 46px; border-radius: 12px; background: #E7F1F7; color: var(--primary); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.service-card h3 { margin-bottom: 8px; }
.service-card p { font-size: .93rem; margin-bottom: 0; }

/* ---------- Process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; padding-top: 8px; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--font-mono); font-size: .85rem; color: var(--signal); font-weight: 700; display: block; margin-bottom: 10px; }
.step h3 { margin-bottom: 6px; font-size: 1.02rem; }
.step p { font-size: .9rem; }
.steps-row { display: flex; align-items: center; }
.step-connector { flex: 1; height: 1px; background: var(--line); margin: 0 -4px 68px; }

/* ---------- Feature list (Neden Biz) ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 40px; }
.feature-item { display: flex; gap: 14px; }
.feature-item svg { flex-shrink: 0; color: var(--success); margin-top: 3px; }
.feature-item h3 { font-size: 1rem; margin-bottom: 4px; }
.feature-item p { font-size: .92rem; margin: 0; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--primary); color: #fff; border-radius: 24px; padding: 52px; display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin-bottom: 6px; }
.cta-band p { color: #CFE3EE; margin: 0; }
.cta-band .btn-outline { border-color: rgba(255,255,255,.4); color: #fff; }
.cta-band .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.08); }

/* ---------- Forms ---------- */
.form-tabs { display: flex; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; }
.form-tab-link { padding: 10px 18px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); font-weight: 700; font-size: .88rem; text-decoration: none; color: var(--ink-soft); }
.form-tab-link.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.form-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-weight: 700; font-size: .88rem; }
.form-field .hint { font-weight: 400; color: var(--ink-soft); font-size: .8rem; }
.form-field input, .form-field select, .form-field textarea {
  font-family: var(--font-body); font-size: .95rem; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg); color: var(--ink);
}
.form-field textarea { resize: vertical; min-height: 110px; }
.form-consent { display: flex; gap: 10px; align-items: flex-start; font-size: .85rem; color: var(--ink-soft); margin: 6px 0 22px; }
.form-consent input { margin-top: 3px; }
.form-consent a { color: var(--primary); }
.hp-field { position: absolute; left: -9999px; top: -9999px; }

.alert { padding: 14px 18px; border-radius: var(--radius-sm); margin-bottom: 20px; font-weight: 600; font-size: .9rem; }
.alert-success { background: #E4F5EC; color: #16643F; }
.alert-error { background: #FBEAEA; color: #8A2323; }

/* ---------- Contact info cards ---------- */
.contact-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 44px; }
.contact-info-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.contact-info-card svg { color: var(--primary); margin-bottom: 10px; }
.contact-info-card h3 { font-size: .95rem; margin-bottom: 4px; }
.contact-info-card p { font-size: .9rem; margin: 0; }

/* ---------- Legal pages ---------- */
.legal-content { max-width: 780px; }
.legal-content h2 { margin-top: 2em; }
.legal-content ul { color: var(--ink-soft); }
.legal-updated { font-family: var(--font-mono); font-size: .8rem; color: var(--ink-soft); }

/* ---------- Footer ---------- */
.site-footer { background: #12222C; color: #B9CBD5; padding: 64px 0 0; margin-top: 40px; }
.site-footer .brand-text { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 32px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-col h3 { color: #fff; font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 16px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: #B9CBD5; text-decoration: none; font-size: .92rem; }
.footer-col a:hover { color: #fff; }
.footer-brand p { color: #92A8B4; font-size: .9rem; }
.footer-contact { gap: 12px !important; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: .88rem; }
.footer-contact svg { color: var(--signal); margin-top: 2px; flex-shrink: 0; }
.whatsapp-link { display: inline-flex; color: var(--success) !important; font-weight: 700; }
.footer-bottom { padding: 22px 0; font-size: .82rem; color: #7C909B; }

/* ---------- Floating actions (WhatsApp + Call) ---------- */
.floating-actions { position: fixed; left: 20px; bottom: 20px; z-index: 150; display: flex; flex-direction: column; gap: 12px; }
.fab { display: flex; align-items: center; justify-content: center; width: 56px; height: 56px; border-radius: 50%; color: #fff; box-shadow: var(--shadow-md); transition: transform .15s ease, box-shadow .15s ease; }
.fab:hover { transform: translateY(-2px) scale(1.06); box-shadow: 0 10px 28px rgba(15,40,60,.24); }
.fab-whatsapp { background: #25D366; }
.fab-call { background: var(--primary); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .main-nav { height: 300px; position: fixed; inset: 76px 0 0 0; background: var(--surface); flex-direction: column; padding: 28px 24px; gap: 4px; transform: translateX(100%); transition: transform .25s ease; }
  .main-nav.open { transform: translateX(0); }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: flex; }
  .header-actions .phone-pill { display: none; }
  .header-actions .btn-small { padding: 9px 14px; font-size: .8rem; }
  .card-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; text-align: center; padding: 36px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
}