/* ============================================================
   SMITHOSPHERE — Tanıtım Sitesi Stil Sistemi
   Koyu, fütüristik, marjinal. 3D sahnelerle iç içe.
   ============================================================ */

:root {
  --uzay: #04060d;
  --uzay-2: #0a0f1e;
  --panel: rgba(17, 24, 43, 0.6);
  --kenar: rgba(148, 163, 184, 0.16);
  --metin: #e6edf7;
  --soluk: #8b9bb4;
  --cam-gobegi: #38bdf8;
  --mor: #a78bfa;
  --lime: #a3e635;
  --kirmizi: #f87171;
  --gradyan: linear-gradient(100deg, #38bdf8 0%, #a78bfa 55%, #f472b6 100%);
  --display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --govde: "Inter", "Segoe UI", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--uzay);
  color: var(--metin);
  font-family: var(--govde);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Arka plan dokusu: gradyan lekeler + ince ızgara */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 85% -10%, rgba(167, 139, 250, 0.14), transparent 60%),
    radial-gradient(800px 500px at -10% 30%, rgba(56, 189, 248, 0.12), transparent 60%),
    radial-gradient(700px 700px at 60% 110%, rgba(244, 114, 182, 0.08), transparent 60%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 20%, black 0%, transparent 75%);
}

::selection { background: rgba(56, 189, 248, 0.35); }

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

.sarici { width: min(1160px, 92%); margin: 0 auto; }

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}

.nav.kaydirildi {
  background: rgba(4, 6, 13, 0.72);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--kenar);
}

.nav-ic {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.logo {
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 2.5px;
}

.logo .nokta { color: var(--cam-gobegi); }

.nav-linkler {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.nav-linkler a {
  font-size: 14px;
  font-weight: 500;
  color: var(--soluk);
  transition: color 0.2s;
  position: relative;
}

.nav-linkler a:hover, .nav-linkler a.aktif { color: var(--metin); }

.nav-linkler a.aktif::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--gradyan);
  border-radius: 2px;
}

.dugme {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.4px;
  cursor: pointer;
  border: none;
  transition: transform 0.15s, box-shadow 0.25s, filter 0.2s;
}

.dugme-birincil {
  background: var(--gradyan);
  color: #04060d;
  box-shadow: 0 8px 30px rgba(56, 189, 248, 0.25);
}

.dugme-birincil:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(167, 139, 250, 0.4);
}

.dugme-hayalet {
  background: transparent;
  color: var(--metin);
  border: 1px solid var(--kenar);
}

.dugme-hayalet:hover { border-color: var(--cam-gobegi); color: var(--cam-gobegi); }

.nav .dugme { padding: 10px 22px; }

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--metin);
  font-size: 26px;
  cursor: pointer;
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-kucuk { min-height: 64vh; }

.sahne3d {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-icerik {
  position: relative;
  z-index: 2;
  padding: 140px 0 90px;
}

.ustyazi {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--cam-gobegi);
  text-transform: uppercase;
  border: 1px solid rgba(56, 189, 248, 0.3);
  background: rgba(56, 189, 248, 0.06);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.ustyazi .canli {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--lime);
  animation: nabiz 1.6s infinite;
}

@keyframes nabiz {
  0%, 100% { box-shadow: 0 0 0 0 rgba(163, 230, 53, 0.6); }
  60% { box-shadow: 0 0 0 8px rgba(163, 230, 53, 0); }
}

h1.dev {
  font-family: var(--display);
  font-size: clamp(42px, 7.2vw, 96px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -1.5px;
  max-width: 15ch;
}

.gradyan-metin {
  background: var(--gradyan);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cizik { position: relative; white-space: nowrap; }
.cizik::after {
  content: "";
  position: absolute;
  left: -2%; right: -2%;
  top: 54%;
  height: 0.09em;
  background: var(--kirmizi);
  transform: rotate(-2deg);
  border-radius: 4px;
}

.hero-alt {
  margin-top: 26px;
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--soluk);
  max-width: 56ch;
}

.hero-alt b { color: var(--metin); }

.hero-dugmeler {
  display: flex;
  gap: 14px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.hero-dipnot {
  margin-top: 18px;
  font-size: 13px;
  color: var(--soluk);
}

/* ---------- TICKER ---------- */
.ticker {
  border-top: 1px solid var(--kenar);
  border-bottom: 1px solid var(--kenar);
  background: rgba(10, 15, 30, 0.5);
  overflow: hidden;
  white-space: nowrap;
  padding: 13px 0;
  position: relative;
  z-index: 3;
}

.ticker-ic {
  display: inline-block;
  animation: kaydir 36s linear infinite;
}

.ticker span {
  font-family: var(--display);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 1.5px;
  margin: 0 26px;
  color: var(--soluk);
}

.ticker .yukari { color: var(--lime); }
.ticker .asagi { color: var(--kirmizi); }

@keyframes kaydir {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- BÖLÜMLER ---------- */
.bolum { padding: 110px 0; position: relative; }

.bolum-baslik {
  font-family: var(--display);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.1;
  max-width: 22ch;
}

.bolum-alt {
  margin-top: 16px;
  color: var(--soluk);
  max-width: 62ch;
  font-size: 16.5px;
}

/* ---------- İSTATİSTİKLER ---------- */
.istatistikler {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 60px;
}

.istatistik {
  border: 1px solid var(--kenar);
  border-radius: 18px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
}

.istatistik::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradyan);
  opacity: 0.7;
}

.istatistik .sayi {
  font-family: var(--display);
  font-size: clamp(38px, 4vw, 58px);
  font-weight: 700;
  line-height: 1;
}

.istatistik .etiket {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--soluk);
}

/* ---------- KART IZGARASI ---------- */
.kartlar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 60px;
}

.kart {
  border: 1px solid var(--kenar);
  border-radius: 20px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  padding: 32px 28px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
  will-change: transform;
}

.kart:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 20px 60px rgba(2, 8, 20, 0.6);
}

.kart .ikon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 24px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 20px;
}

.kart h3 {
  font-family: var(--display);
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.kart p { font-size: 14.5px; color: var(--soluk); }

/* ---------- ADIMLAR ---------- */
.adimlar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 60px;
  counter-reset: adim;
}

.adim {
  position: relative;
  padding: 34px 28px 30px;
  border: 1px solid var(--kenar);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(17, 24, 43, 0.7), rgba(10, 15, 30, 0.4));
}

.adim::before {
  counter-increment: adim;
  content: "0" counter(adim);
  font-family: var(--display);
  font-size: 60px;
  font-weight: 700;
  position: absolute;
  top: 10px; right: 20px;
  background: var(--gradyan);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.35;
}

.adim h3 { font-family: var(--display); font-size: 19px; margin-bottom: 10px; }
.adim p { font-size: 14.5px; color: var(--soluk); }

/* ---------- CTA BANDI ---------- */
.cta-bandi {
  border: 1px solid var(--kenar);
  border-radius: 28px;
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(56, 189, 248, 0.16), transparent 70%),
    radial-gradient(500px 300px at 90% 100%, rgba(167, 139, 250, 0.16), transparent 70%),
    var(--uzay-2);
  padding: 70px 8%;
  text-align: center;
}

.cta-bandi h2 {
  font-family: var(--display);
  font-size: clamp(28px, 3.6vw, 46px);
  letter-spacing: -0.8px;
  max-width: 24ch;
  margin: 0 auto 16px;
}

.cta-bandi p { color: var(--soluk); margin-bottom: 32px; }

/* ---------- PLAN KARTLARI ---------- */
.planlar-izgara {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 64px;
  align-items: stretch;
}

.plan {
  border: 1px solid var(--kenar);
  border-radius: 24px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  padding: 38px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s, border-color 0.25s;
}

.plan:hover { transform: translateY(-6px); }

.plan.one-cikan {
  border-color: rgba(167, 139, 250, 0.6);
  background:
    radial-gradient(400px 260px at 50% 0%, rgba(167, 139, 250, 0.16), transparent 70%),
    var(--panel);
  box-shadow: 0 30px 80px rgba(88, 28, 135, 0.25);
}

.plan-rozet {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--gradyan);
  color: #04060d;
  font-family: var(--display);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 6px 18px;
  border-radius: 999px;
  white-space: nowrap;
}

.plan h3 {
  font-family: var(--display);
  font-size: 15px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--soluk);
}

.plan .fiyat {
  font-family: var(--display);
  font-size: 54px;
  font-weight: 700;
  line-height: 1;
  margin: 22px 0 4px;
}

.plan .fiyat small {
  font-size: 17px;
  font-weight: 500;
  color: var(--soluk);
}

.plan .fiyat-notu { font-size: 13px; color: var(--soluk); min-height: 20px; }

.plan ul {
  list-style: none;
  margin: 28px 0 34px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan li {
  font-size: 14.5px;
  color: var(--soluk);
  padding-left: 28px;
  position: relative;
}

.plan li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--lime);
  font-weight: 700;
}

.plan li.yakinda::before { content: "◷"; color: var(--mor); }
.plan li b { color: var(--metin); font-weight: 600; }

.plan .dugme { text-align: center; }

.guvence {
  margin-top: 40px;
  text-align: center;
  font-size: 13.5px;
  color: var(--soluk);
}

.guvence b { color: var(--metin); }

/* ---------- SSS AKORDEON ---------- */
.akordeon { margin-top: 56px; display: flex; flex-direction: column; gap: 12px; max-width: 820px; }

.soru {
  border: 1px solid var(--kenar);
  border-radius: 16px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color 0.25s;
}

.soru.acik { border-color: rgba(56, 189, 248, 0.4); }

.soru-baslik {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--metin);
  font-family: var(--display);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.soru-baslik .arti {
  font-size: 22px;
  color: var(--cam-gobegi);
  transition: transform 0.25s;
  flex-shrink: 0;
}

.soru.acik .arti { transform: rotate(45deg); }

.soru-icerik {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.soru-icerik p {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--soluk);
}

/* ---------- İLETİŞİM ---------- */
.iletisim-izgara {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  margin-top: 60px;
  align-items: start;
}

.form-kutu {
  border: 1px solid var(--kenar);
  border-radius: 24px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  padding: 36px;
}

.alan { margin-bottom: 20px; }

.alan label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.8px;
  color: var(--soluk);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.alan input, .alan textarea {
  width: 100%;
  background: rgba(4, 6, 13, 0.6);
  border: 1px solid var(--kenar);
  border-radius: 12px;
  color: var(--metin);
  padding: 13px 16px;
  font-family: var(--govde);
  font-size: 15px;
  transition: border-color 0.2s;
}

.alan input:focus, .alan textarea:focus {
  outline: none;
  border-color: var(--cam-gobegi);
}

.alan textarea { min-height: 140px; resize: vertical; }

.form-basari {
  display: none;
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(163, 230, 53, 0.1);
  border: 1px solid rgba(163, 230, 53, 0.4);
  color: var(--lime);
  font-size: 14px;
}

.iletisim-bilgi { display: flex; flex-direction: column; gap: 16px; }

.bilgi-kart {
  border: 1px solid var(--kenar);
  border-radius: 18px;
  background: var(--panel);
  padding: 24px 26px;
}

.bilgi-kart .etiket {
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--soluk);
  margin-bottom: 6px;
}

.bilgi-kart .deger {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 600;
}

.bilgi-kart .deger a:hover { color: var(--cam-gobegi); }

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--kenar);
  padding: 60px 0 40px;
  margin-top: 60px;
  background: rgba(4, 6, 13, 0.6);
}

.footer-izgara {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}

.footer p { font-size: 13.5px; color: var(--soluk); max-width: 40ch; margin-top: 14px; }

.footer h4 {
  font-family: var(--display);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--soluk);
  margin-bottom: 16px;
}

.footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer ul a { font-size: 14px; color: var(--soluk); transition: color 0.2s; }
.footer ul a:hover { color: var(--metin); }

.footer-alt {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid var(--kenar);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--soluk);
}

/* ---------- REVEAL ANİMASYONLARI ---------- */
.gizli {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.gorunur { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .gizli { opacity: 1; transform: none; transition: none; }
  .ticker-ic { animation: none; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 980px) {
  .kartlar, .adimlar, .planlar-izgara, .istatistikler { grid-template-columns: repeat(2, 1fr); }
  .iletisim-izgara, .footer-izgara { grid-template-columns: 1fr; }
  .plan.one-cikan { order: -1; }
}

@media (max-width: 640px) {
  .kartlar, .adimlar, .planlar-izgara, .istatistikler { grid-template-columns: 1fr; }

  .nav-linkler {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(4, 6, 13, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--kenar);
    padding: 26px 0;
    display: none;
  }

  .nav-linkler.acik { display: flex; }
  .hamburger { display: block; }
  .bolum { padding: 80px 0; }
}