:root {
  --mavi: #2563FF;
  --camgobegi: #00C4EC;
  --mor: #703CFF;
  --pembe: #D04AF7;
  --sari: #FFDC32;
  --acik: #F5F7FA;
  --soluk: rgba(245, 247, 250, 0.68);
  --zemin: #0B0812;
  --kutu: #141A30;
  --cizgi: rgba(245, 247, 250, 0.09);
  --gecis: linear-gradient(135deg, #2563FF 0%, #5B4BFF 55%, #703CFF 100%);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--zemin);
  color: var(--acik);
  font-family: "Rubik", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.vurgu {
  background: linear-gradient(90deg, #4F86FF, #9B7BFF 55%, #D04AF7);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- arka plan ışıkları ---------- */
.arka { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(37, 99, 255, 0.22), transparent 70%),
    linear-gradient(180deg, #0B0812 0%, #0E1022 60%, #0B0812 100%); }
.arka::after { content: ""; position: absolute; inset: 0; opacity: 0.35;
  background-image: radial-gradient(rgba(245, 247, 250, 0.08) 1px, transparent 1px); background-size: 28px 28px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 75%); mask-image: linear-gradient(180deg, #000, transparent 75%); }
.isik { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.55; }
.isik-1 { width: 520px; height: 520px; left: -160px; top: 160px; background: #2563FF; opacity: 0.28; animation: suzul 14s ease-in-out infinite alternate; }
.isik-2 { width: 600px; height: 600px; right: -200px; top: 60px; background: #703CFF; opacity: 0.32; animation: suzul 18s ease-in-out infinite alternate-reverse; }
.isik-3 { width: 420px; height: 420px; left: 40%; top: 900px; background: #D04AF7; opacity: 0.16; animation: suzul 16s ease-in-out infinite alternate; }
@keyframes suzul { to { transform: translate(60px, 40px) scale(1.12); } }

/* ---------- üst ---------- */
.ust { display: flex; justify-content: center; padding: 26px 20px 0; }
.logo img { width: 230px; height: auto; filter: drop-shadow(0 4px 22px rgba(112, 60, 255, 0.45)); }

/* ---------- ana bölüm ---------- */
.giris {
  max-width: 1240px; margin: 0 auto; padding: 36px 24px 40px;
  display: grid; grid-template-columns: 1fr 1.08fr; align-items: center; gap: 24px;
}
.rozet {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.4px; color: #C9D6FF;
  background: rgba(37, 99, 255, 0.12); border: 1px solid rgba(79, 134, 255, 0.35);
}
.rozet i { width: 8px; height: 8px; border-radius: 50%; background: var(--camgobegi); box-shadow: 0 0 10px var(--camgobegi); animation: nabiz 1.6s ease-in-out infinite; }
@keyframes nabiz { 50% { opacity: 0.35; } }
h1 { margin: 18px 0 14px; font-size: clamp(34px, 4.6vw, 56px); line-height: 1.08; font-weight: 800; letter-spacing: -0.5px; }
.giris-yazi > p { margin: 0 0 28px; max-width: 560px; color: var(--soluk); font-size: 17px; }
.giris-gorsel img { width: 100%; height: auto; filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.55)); animation: yuz 6s ease-in-out infinite; }
@keyframes yuz { 50% { transform: translateY(-10px); } }

/* ---------- düğmeler ---------- */
.dugmeler { display: flex; flex-wrap: wrap; gap: 12px; }
.dugme {
  position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 12px;
  min-height: 58px; padding: 10px 22px 10px 18px; border-radius: 14px; border: 0; cursor: pointer;
  font: inherit; color: #fff; text-decoration: none; text-align: left;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease, border-color 0.18s ease;
}
.dugme svg { width: 26px; height: 26px; fill: currentColor; flex: 0 0 26px; }
.dugme span { display: flex; flex-direction: column; line-height: 1.15; font-weight: 700; font-size: 17px; }
.dugme small { font-size: 11.5px; font-weight: 500; letter-spacing: 0.3px; opacity: 0.8; }
.dugme-ana { background: var(--gecis); box-shadow: 0 8px 22px rgba(37, 99, 255, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.28); }
.dugme-ana::before { content: ""; position: absolute; top: 0; left: -60%; width: 40%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent); transform: skewX(-20deg); transition: left 0.6s ease; }
.dugme-ana:hover { transform: translateY(-2px); filter: brightness(1.07); box-shadow: 0 12px 28px rgba(112, 60, 255, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.3); }
.dugme-ana:hover::before { left: 120%; }
.dugme-ikinci { background: rgba(245, 247, 250, 0.05); border: 1px solid rgba(245, 247, 250, 0.16); }
.dugme-ikinci:hover { transform: translateY(-2px); border-color: rgba(112, 60, 255, 0.6); background: rgba(112, 60, 255, 0.12); }
.dugme:focus-visible, .sekme:focus-visible, .ozellik:focus-visible { outline: 2px solid var(--camgobegi); outline-offset: 3px; }
.artilar { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 22px 0 0; padding: 0; list-style: none; color: var(--soluk); font-size: 14px; }
.artilar li { display: flex; align-items: center; gap: 8px; }
.artilar li::before { content: ""; width: 18px; height: 18px; border-radius: 50%; flex: 0 0 18px;
  background: rgba(0, 196, 236, 0.15) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300C4EC' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 12.5l4 4 8-9'/%3E%3C/svg%3E") center / 12px no-repeat; }
.artilar b { color: var(--acik); font-weight: 600; }

/* ---------- bölümler ---------- */
.bolum { max-width: 1240px; margin: 0 auto; padding: 56px 24px; }
h2 { margin: 0 0 30px; text-align: center; font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; letter-spacing: -0.3px; }
.ozellikler { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.ozellik {
  --c: #2563FF; position: relative; display: flex; align-items: center; gap: 12px; padding: 16px 18px 16px 10px;
  border-radius: 16px; text-decoration: none; background: linear-gradient(105deg, #1A2140 0%, #121624 55%, #0B0812 100%);
  border: 1px solid color-mix(in srgb, var(--c) 50%, transparent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--c) 28%, transparent);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.ozellik:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4), 0 0 26px color-mix(in srgb, var(--c) 50%, transparent); }
.ozellik img { width: 92px; height: 92px; margin: -18px 0 -18px -14px; filter: drop-shadow(0 8px 10px rgba(0, 0, 0, 0.45)); flex: 0 0 92px; }
.ozellik h3 { margin: 0 0 3px; font-size: 18px; font-weight: 700; }
.ozellik p { margin: 0; font-size: 13.5px; color: var(--soluk); }

/* ---------- kurulum ---------- */
.sekmeler { display: flex; justify-content: center; gap: 6px; width: max-content; max-width: 100%; margin: 0 auto 26px; padding: 5px;
  border-radius: 14px; background: rgba(7, 6, 12, 0.85); border: 1px solid var(--cizgi); }
.sekme { padding: 11px 22px; border: 0; border-radius: 10px; cursor: pointer; font: inherit; font-weight: 700; font-size: 15px;
  color: rgba(245, 247, 250, 0.55); background: transparent; transition: color 0.2s, background 0.2s; }
.sekme:hover { color: var(--acik); }
.sekme.etkin { color: #fff; background: var(--gecis); box-shadow: 0 6px 16px rgba(37, 99, 255, 0.35); }
.adimlar { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: adim; }
.adimlar[hidden] { display: none; }
.adim { position: relative; padding: 22px 20px 20px; border-radius: 16px; background: rgba(20, 26, 48, 0.75); border: 1px solid var(--cizgi); }
.adim b { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 12px; border-radius: 11px;
  background: var(--gecis); font-size: 17px; box-shadow: 0 6px 14px rgba(112, 60, 255, 0.35); }
.adim h4 { margin: 0 0 6px; font-size: 17px; font-weight: 700; }
.adim p { margin: 0; font-size: 14.5px; color: var(--soluk); }
.adim strong { color: var(--acik); font-weight: 600; }
.ikon-paylas { display: inline-block; width: 16px; height: 16px; vertical-align: -2px; background: var(--camgobegi);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2l4 4h-3v9h-2V6H8l4-4zM5 10h3v2H6v8h12v-8h-2v-2h3a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1V11a1 1 0 0 1 1-1z'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2l4 4h-3v9h-2V6H8l4-4zM5 10h3v2H6v8h12v-8h-2v-2h3a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1V11a1 1 0 0 1 1-1z'/%3E%3C/svg%3E") center / contain no-repeat; }

/* ---------- son çağrı ---------- */
.cagri-kutu { display: flex; align-items: center; gap: 26px; padding: 30px 34px; border-radius: 22px;
  background: radial-gradient(70% 140% at 0% 50%, rgba(112, 60, 255, 0.35), transparent 70%), linear-gradient(135deg, #1B2F7A 0%, #121A44 55%, #0B0812 100%);
  border: 1px solid rgba(112, 60, 255, 0.4); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4); }
.cagri-kutu img { width: 96px; height: 96px; border-radius: 24px; box-shadow: 0 10px 30px rgba(37, 99, 255, 0.45); flex: 0 0 96px; }
.cagri-kutu h2 { margin: 0 0 6px; text-align: left; font-size: clamp(22px, 2.6vw, 30px); }
.cagri-kutu p { margin: 0; color: var(--soluk); }
.cagri-kutu > div { flex: 1; }

/* ---------- alt ---------- */
.alt { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 34px 24px 46px; border-top: 1px solid var(--cizgi); color: rgba(245, 247, 250, 0.5); font-size: 13.5px; text-align: center; }
.alt img { width: 150px; height: auto; opacity: 0.85; }
.alt p { margin: 0; }

/* ---------- yan sosyal ---------- */
.yan { position: fixed; right: 0; top: 50%; transform: translateY(-50%); z-index: 20; display: flex; flex-direction: column; gap: 6px; }
.yan a { display: flex; align-items: center; gap: 10px; height: 42px; padding: 0 12px; border-radius: 12px 0 0 12px; text-decoration: none;
  background: rgba(20, 26, 48, 0.9); border: 1px solid var(--cizgi); border-right: 0; transform: translateX(calc(100% - 44px));
  transition: transform 0.25s ease, background 0.25s ease; backdrop-filter: blur(8px); }
.yan a:hover, .yan a:focus-visible { transform: translateX(0); background: rgba(37, 99, 255, 0.85); }
.yan svg { width: 20px; height: 20px; fill: currentColor; flex: 0 0 20px; }
.yan span { font-size: 14px; font-weight: 600; white-space: nowrap; }

/* ---------- pencere ---------- */
.pencere { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 20px; background: rgba(5, 4, 10, 0.72); backdrop-filter: blur(6px); }
.pencere[hidden] { display: none; }
.pencere-kutu { position: relative; width: min(460px, 100%); padding: 28px 26px 24px; border-radius: 20px; background: #12162A; border: 1px solid rgba(112, 60, 255, 0.4); box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6); }
.pencere-kutu h3 { margin: 0 0 12px; font-size: 21px; }
.pencere-kutu p, .pencere-kutu li { color: var(--soluk); font-size: 15px; }
.pencere-kutu ol { margin: 0 0 16px; padding-left: 20px; }
.pencere-kutu li { margin-bottom: 6px; }
.pencere-kutu strong { color: var(--acik); }
.pencere-kutu .dugme { width: 100%; justify-content: center; }
.kapat { position: absolute; top: 10px; right: 12px; width: 34px; height: 34px; border: 0; border-radius: 10px; cursor: pointer; font-size: 24px; line-height: 1;
  color: var(--acik); background: rgba(245, 247, 250, 0.06); }
.kapat:hover { background: rgba(245, 247, 250, 0.14); }

/* ---------- mobil ---------- */
@media (max-width: 980px) {
  .giris { grid-template-columns: 1fr; text-align: center; padding-top: 22px; }
  .giris-gorsel { order: -1; max-width: 640px; margin: 0 auto; }
  .giris-yazi > p { margin-left: auto; margin-right: auto; }
  .dugmeler, .artilar { justify-content: center; }
  .ozellikler { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adimlar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .yan { position: static; transform: none; flex-direction: row; justify-content: center; gap: 10px; padding: 0 20px 28px; }
  .yan a span { display: none; }
  .yan a { transform: none; justify-content: center; width: 46px; height: 46px; padding: 0; border-radius: 14px; border-right: 1px solid var(--cizgi); }
}
@media (max-width: 760px) {
  .cagri-kutu { flex-direction: column; text-align: center; padding: 26px 20px; }
  .cagri-kutu h2 { text-align: center; }
}
@media (max-width: 600px) {
  .ust { padding-top: 18px; }
  .logo img { width: 180px; }
  h1 { font-size: 32px; }
  .giris-yazi > p { font-size: 15.5px; }
  .dugmeler { flex-direction: column; }
  .dugme { width: 100%; justify-content: center; }
  .ozellikler { grid-template-columns: 1fr; }
  .adimlar { grid-template-columns: 1fr; }
  .sekme { padding: 10px 14px; font-size: 14px; }
  .cagri-kutu .dugme { width: 100%; justify-content: center; }
  .bolum { padding: 40px 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}