/* ==========================================================================
   ERÇELİK GRUP — "Web Sitemiz Hazırlanıyor"
   Endüstriyel plaka / kurumsal cam kart estetiği.
   Görsel (img) kullanılmamıştır — tüm doku CSS ile üretilmiştir.
   ========================================================================== */

/* ---------- 1. Token'lar ---------- */
:root {
  --bg-0:   #0A0F14;
  --bg-1:   #121B24;
  --bg-2:   #1B2731;

  --ink-0:  #F1F4F6;   /* başlık */
  --ink-1:  #A6B2BC;   /* gövde metni */
  --ink-2:  #5E6C77;   /* etiket / muted */

  --accent: #D6304A;   /* kor kırmızısı — yalnızca vurgu */
  --accent-dim: rgba(214, 48, 74, .14);

  --glass:  rgba(255, 255, 255, .045);
  --border: rgba(255, 255, 255, .09);
  --line:   rgba(255, 255, 255, .10);

  --font: 'Poppins', 'Segoe UI', sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- 2. Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg-0);
  color: var(--ink-0);
  height: 100dvh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

/* ---------- 3. Arka plan (CSS doku, görsel yok) ---------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(60% 45% at 88% 8%, var(--accent-dim) 0%, transparent 70%),
    radial-gradient(90% 70% at 10% 100%, var(--bg-2) 0%, transparent 60%),
    linear-gradient(165deg, var(--bg-1) 0%, var(--bg-0) 60%);
}

/* İnce fırçalanmış çelik dokusu */
.bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(255, 255, 255, .018) 0px,
    rgba(255, 255, 255, .018) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* Dev, soluk fa-industry filigranı — imzalayıcı tasarım öğesi */
.bg::after {
  content: "\f275";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: -4vw;
  bottom: -8vh;
  font-size: min(46vw, 42vh);
  color: rgba(255, 255, 255, .025);
  line-height: 1;
  user-select: none;
}

/* ---------- 4. Sayfa iskeleti ---------- */
.page {
  position: relative;
  z-index: 1;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(12px, 3vh, 28px) clamp(14px, 3vw, 28px);
}

/* ---------- 5. Kart (cam) ---------- */
.card {
  position: relative;
  width: 100%;
  max-width: 720px;
  max-height: 100%;
  overflow-y: auto;
  scrollbar-width: none;

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(14px, 2.1vh, 22px);

  padding: clamp(26px, 4vh, 44px) clamp(24px, 5vw, 52px);
  border-radius: 18px;

  background: var(--glass);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px) saturate(130%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  box-shadow: 0 20px 50px -22px rgba(0, 0, 0, .5);

  text-align: center;
  animation: fade-up .7s var(--ease) both;
}

.card::-webkit-scrollbar { display: none; }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Üst kenarda ince "plaka" vurgu şeridi */
.card__rail {
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--accent) 50%, transparent);
  opacity: .8;
}

/* ---------- 6. Marka bölümü ---------- */
.brand { display: flex; flex-direction: column; align-items: center; gap: 12px; }

/* Altıgen "endüstriyel mühür" rozeti */
.brand__badge {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(50% 0%, 95% 25%, 95% 75%, 50% 100%, 5% 75%, 5% 25%);
  background: linear-gradient(155deg, rgba(255,255,255,.09), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 1.35rem;
}

.brand__title {
  font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2rem);
  font-weight: 700;
  letter-spacing: .07em;
}

.brand__subtitle {
  font-size: clamp(.68rem, .6rem + .3vw, .8rem);
  font-weight: 400;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* ---------- 7. Ayraçlar ---------- */
.rule {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rule span,
.rule::before,
.rule::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, var(--line));
}

.rule::after { background: linear-gradient(90deg, var(--line), transparent); }

.rule span {
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin: 0 10px;
}

.rule--full {
  height: 1px;
  background: var(--line);
  width: 100%;
}

/* ---------- 8. Bilgi satırı — teknik çizim köşe işaretli paneller ---------- */
.info-row {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: clamp(12px, 2vw, 20px);
}

.info-panel {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: clamp(16px, 2.4vh, 22px) clamp(10px, 1.6vw, 16px);
  border: 1px solid var(--line);
  border-radius: 4px;
  background: linear-gradient(180deg, rgba(255,255,255,.025), transparent 60%);
  transition: border-color .35s var(--ease), transform .35s var(--ease), background-color .35s var(--ease);
}

.info-panel:hover {
  border-color: rgba(255, 255, 255, .16);
  background: linear-gradient(180deg, rgba(255,255,255,.045), transparent 60%);
  transform: translateY(-3px);
}

/* Teknik çizim / şablon köşe işaretleri — imzalayıcı detay */
.info-panel__corner {
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--accent);
  opacity: .55;
  transition: opacity .35s var(--ease);
}

.info-panel__corner--tl { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.info-panel__corner--br { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.info-panel:hover .info-panel__corner { opacity: 1; }

.info-panel__icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: .82rem;
  margin-bottom: 2px;
}

.info-panel__label {
  font-size: .64rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
  position: relative;
  padding-bottom: 6px;
}

/* Etiket altında minik vurgu çizgisi */
.info-panel__label::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 1px;
  background: var(--accent);
  opacity: .6;
}

.info-panel__value {
  font-size: .76rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--ink-1);
}

.info-panel__value a { transition: color .25s var(--ease); }
.info-panel__value a:hover { color: var(--accent); }

/* ---------- 9. Duyuru ---------- */
.announce {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.announce__line {
  font-size: clamp(1.5rem, 1rem + 2.6vw, 2.6rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: .01em;
  color: var(--ink-0);
}

.announce__line--accent {
  color: var(--accent);
  font-weight: 800;
  font-size: clamp(1.7rem, 1.1rem + 3.1vw, 3rem);
}

.announce__desc {
  margin-top: 10px;
  font-size: clamp(.76rem, .7rem + .2vw, .88rem);
  font-weight: 300;
  line-height: 1.6;
  color: var(--ink-1);
  max-width: 460px;
}

/* ---------- 10. Footer ---------- */
.foot {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(10px, 1.6vh, 16px);
}

.foot__copy {
  font-size: .65rem;
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 540px;
}

.foot__socials { display: flex; gap: 12px; }

.foot__icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--ink-1);
  font-size: .75rem;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.foot__icon:hover,
.foot__icon:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* ---------- 11. Responsive ---------- */
@media (max-width: 1200px) {
  .card { max-width: 660px; }
}

@media (max-width: 992px) {
  .card { max-width: 540px; border-radius: 16px; }
}

@media (max-width: 768px) {
  .info-row { flex-direction: column; gap: 10px; }
  .info-panel { flex-direction: row; text-align: left; padding: 12px 14px; gap: 12px; }
  .info-panel__icon { margin-bottom: 0; flex-shrink: 0; }
  .info-panel__label { padding-bottom: 3px; }
  .info-panel__label::after { left: 0; transform: none; }
  .announce__line { letter-spacing: 0; }
}

@media (max-width: 576px) {
  .card { padding: 20px 18px; gap: 12px; border-radius: 14px; }
  .brand__badge { width: 50px; height: 50px; font-size: 1.1rem; }
  .info-panel { padding: 10px 12px; }
  .foot__copy { font-size: .58rem; }
}

@media (max-height: 620px) {
  .card { gap: 8px; padding: 14px 22px; }
  .announce__desc { display: none; }
}