/* Tanıtım sayfası (index.php). Tailwind'den bağımsız, el yazımı.
   Düzen AKADiGMA tanıtım sayfalarının (onlinetoplanti.com) diliyle: Inter, kalın başlıklar, kayan giriş, koyu vitrin bölümü,
   kartlar, paketler, S.S.S, çağrı bandı. Renkler Akademik ALAN logosundan: lacivert, çelik mavisi, gök mavisi, gümüş. */

:root {
  --lacivert: #1b365d;
  --lacivert-koyu: #12264a;
  --gece: #0b1730;
  --celik: #4a6984;
  --gok: #2d82b7;
  --gok-acik: #6fb6e6;
  --gumus: #9aa8b6;
  --metin: #0f1a2b;
  --govde: #334155;
  --ikincil: #5b6778;
  --soluk: #8a95a5;
  --zemin: #f6f8fb;
  --cizgi: #e3e8ef;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--zemin); color: var(--govde); font: 400 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; }
img, svg { display: block; }
h1, h2, h3, h4, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:focus-visible { outline: 2px solid var(--gok); outline-offset: 3px; border-radius: 6px; }
.gizli { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.gizli-gec { position: absolute; left: -9999px; top: 8px; z-index: 60; background: var(--lacivert); color: #fff; padding: 8px 14px; border-radius: 8px; }
.gizli-gec:focus { left: 8px; }
.kap { width: 100%; max-width: 1200px; margin-inline: auto; padding-inline: 20px; }
@media (min-width: 768px) { .kap { padding-inline: 32px; } }
.kap-dar { max-width: 760px; }
.ik { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* --- Düğmeler --- */
.dugme {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; border-radius: 12px;
  font-weight: 700; font-size: 16px; line-height: 24px; text-decoration: none; white-space: nowrap; transition: background .15s, transform .15s, box-shadow .15s;
}
.dugme:active { transform: scale(.97); }
.dugme .ik { width: 18px; height: 18px; transition: transform .15s; }
.dugme:hover .ik { transform: translateX(2px); }
.dugme-ana { background: var(--lacivert); color: #fff; box-shadow: 0 10px 15px -3px rgba(27, 54, 93, .3), 0 4px 6px -4px rgba(27, 54, 93, .3); }
.dugme-ana:hover { background: var(--lacivert-koyu); }
.dugme-koyu { background: #fff; color: var(--metin); box-shadow: 0 1px 2px rgba(15, 26, 43, .06); outline: 1px solid var(--cizgi); outline-offset: -1px; }
.dugme-koyu:hover { background: #f1f4f8; }
.dugme-buyuk { padding: 14px 26px; font-size: 16px; }
.dugme-tam { display: flex; width: 100%; padding: 12px 0; font-size: 14px; }
.dugme-acik { background: #eef2f7; color: var(--metin); }
.dugme-acik:hover { background: #e2e8f0; }
.dugme-beyaz { background: #fff; color: var(--lacivert); box-shadow: 0 10px 15px -3px rgba(0, 0, 0, .15); }
.dugme-beyaz:hover { background: #f1f5fa; }

/* --- Üst menü --- */
.ust {
  position: fixed; inset: 0 0 auto; z-index: 40; background: rgba(255, 255, 255, .82);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid var(--cizgi);
  transition: transform .3s;
}
.ust.gizli-ust { transform: translateY(-100%); }
.ust-ic { display: flex; align-items: center; gap: 24px; height: 72px; }
.marka img { height: 42px; width: auto; }
.menu { display: none; gap: 28px; margin-left: auto; font-size: 14px; font-weight: 600; color: var(--ikincil); }
.menu a { text-decoration: none; transition: color .15s; }
.menu a:hover { color: var(--lacivert); }
.ust-eylem { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.giris { font-size: 14px; font-weight: 700; color: var(--metin); text-decoration: none; }
.giris:hover { color: var(--lacivert); }
.ust-eylem .dugme { font-size: 14px; }
@media (min-width: 960px) {
  .menu { display: flex; }
  .ust-eylem { margin-left: 8px; padding-left: 24px; border-left: 1px solid var(--cizgi); }
}
@media (max-width: 420px) { .marka img { height: 34px; } .ust-eylem { gap: 12px; } .ust-eylem .dugme { padding: 8px 14px; } .ust-ic { gap: 10px; } }

/* --- Giriş: kayan başlıklar --- */
.kahraman { position: relative; overflow: hidden; padding: 136px 0 72px; text-align: center; }
@media (min-width: 1024px) { .kahraman { padding: 184px 0 88px; } }
.isik { position: absolute; border-radius: 50%; filter: blur(60px); pointer-events: none; }
.isik-1 { width: 520px; height: 520px; right: -160px; top: -120px; background: rgba(111, 182, 230, .28); }
.isik-2 { width: 460px; height: 460px; left: -180px; bottom: -160px; background: rgba(74, 105, 132, .18); }
.slayt-kap { position: relative; max-width: 1000px; margin-inline: auto; }
.slaytlar { display: grid; }
.slayt { grid-area: 1 / 1; opacity: 0; transform: translateY(10px); transition: opacity .5s, transform .5s; pointer-events: none; }
.slayt.etkin { opacity: 1; transform: none; pointer-events: auto; }
.slayt h2 { font-size: clamp(36px, 6.2vw, 72px); font-weight: 900; line-height: 1.04; letter-spacing: -.025em; color: var(--metin); margin-bottom: 20px; }
.slayt h2 span {
  display: block; background: linear-gradient(90deg, var(--lacivert) 10%, var(--gok) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: .06em;
}
.slayt p { max-width: 640px; margin-inline: auto; font-size: clamp(16px, 1.6vw, 18px); color: var(--ikincil); }
.slayt-ok {
  position: absolute; top: 34%; z-index: 2; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255, 255, 255, .7); color: var(--ikincil); box-shadow: 0 1px 3px rgba(15, 26, 43, .08); transition: background .15s, color .15s;
}
.slayt-ok:hover { background: #fff; color: var(--lacivert); }
.slayt-ok.sol { left: -64px; } .slayt-ok.sag { right: -64px; }
@media (max-width: 1160px) { .slayt-ok.sol { left: -8px; } .slayt-ok.sag { right: -8px; } }
@media (max-width: 760px) { .slayt-ok { display: none; } }
.kahraman-eylem { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 40px; }
@media (max-width: 480px) { .kahraman-eylem .dugme { flex: 1 1 100%; } }
.kahraman-not { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px 20px; margin-top: 20px; font-size: 13.5px; color: var(--soluk); }
.kahraman-not .ik { width: 15px; height: 15px; color: var(--gok); stroke-width: 2.6; }
.kahraman-not span { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.noktalar { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 44px; }
.noktalar [data-nokta] { width: 8px; height: 8px; border-radius: 99px; background: #cbd5e1; transition: width .3s, background .3s; }
.noktalar [data-nokta][aria-selected="true"] { width: 32px; background: var(--lacivert); }
.durdur { position: relative; width: 16px; height: 16px; margin-left: 10px; opacity: .55; }
.durdur::before, .durdur::after { content: ""; position: absolute; top: 4px; width: 2.5px; height: 8px; background: var(--ikincil); border-radius: 1px; }
.durdur::before { left: 5px; } .durdur::after { left: 9px; }
.durdur.durdu::before { left: 5px; width: 0; height: 0; background: none; border-style: solid; border-width: 4px 0 4px 7px; border-color: transparent transparent transparent var(--ikincil); }
.durdur.durdu::after { display: none; }

/* --- Bölüm başlıkları --- */
.bolum-bas { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.bolum-bas h2, .bildiri h2 { font-size: clamp(28px, 3.6vw, 38px); font-weight: 900; line-height: 1.15; letter-spacing: -.015em; color: var(--metin); margin-bottom: 14px; }
.bolum-bas p, .bildiri p { font-size: 17px; color: var(--ikincil); }

/* --- Neden --- */
.neden { padding: 96px 0; background: #fff; border-block: 1px solid var(--cizgi); }
.neden-izgara { display: grid; gap: 40px 64px; max-width: 1080px; margin-inline: auto; }
@media (min-width: 860px) { .neden-izgara { grid-template-columns: 1fr 1fr; } }
.neden-oge { display: flex; gap: 20px; align-items: flex-start; }
.neden-oge h3, .kart h3 { font-size: 19px; font-weight: 700; color: var(--metin); margin-bottom: 8px; line-height: 1.35; }
.neden-oge p { font-size: 15px; color: var(--ikincil); }
.neden-oge b { color: var(--metin); font-weight: 700; }
.neden-oge i { color: var(--lacivert); }
.cip { flex: none; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; }
.cip .ik { width: 22px; height: 22px; }
.cip-lacivert { background: #e8eef6; color: var(--lacivert); }
.cip-gok { background: #e4f1fa; color: var(--gok); }
.cip-celik { background: #e9eff4; color: var(--celik); }
.cip-gumus { background: #eef1f4; color: #5f7184; }
.ayrac { height: 1px; max-width: 1080px; margin: 80px auto; background: var(--cizgi); }
.bildiri { max-width: 820px; margin-inline: auto; text-align: center; }
.bildiri h2 { font-size: clamp(28px, 3.4vw, 40px); }
.bildiri h2 span { display: block; color: var(--gok); }

/* --- Vitrin (koyu) --- */
.vitrin {
  padding: 88px 0 72px; color: #fff; text-align: center; overflow: hidden;
  background: radial-gradient(circle at 50% 0%, #2a4b7c 0%, #16305a 45%, #0d1d38 100%);
}
.rozet { display: inline-block; padding: 6px 14px; border-radius: 99px; background: rgba(255, 255, 255, .92); color: var(--lacivert); font-size: 12px; font-weight: 800; letter-spacing: .01em; box-shadow: 0 0 0 4px rgba(111, 182, 230, .18); }
.vitrin-baslik { margin: 22px 0 12px; font-size: clamp(34px, 5vw, 56px); font-weight: 800; line-height: 1.1; letter-spacing: -.02em; }
.vitrin-alt { font-size: clamp(16px, 1.7vw, 19px); font-weight: 600; color: rgba(255, 255, 255, .9); }
.vitrin-metin { max-width: 640px; margin: 18px auto 0; font-size: 15px; color: rgba(214, 226, 240, .72); }
.vitrin-metin b { color: #fff; }

.akis { position: relative; display: grid; gap: 20px; max-width: 980px; margin: 64px auto 56px; text-align: left; }
@media (min-width: 900px) { .akis { grid-template-columns: 1fr auto 1fr; align-items: center; gap: 36px; min-height: 300px; } }
.akis-cizgi { position: absolute; inset: 0; width: 100%; height: 100%; display: none; }
@media (min-width: 900px) { .akis-cizgi { display: block; } }
.akis-cizgi path { fill: none; stroke: rgba(111, 182, 230, .55); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.akis-cizgi path.soluk { stroke: rgba(154, 168, 182, .25); }
.akis-kart { position: relative; z-index: 1; }
.akis-kisi { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.akis-kisi.sag { justify-content: flex-end; text-align: right; }
.akis-kisi b { display: block; font-size: 15px; }
.akis-kisi small { display: block; font-size: 10.5px; font-weight: 700; letter-spacing: .08em; color: rgba(214, 226, 240, .6); }
.avatar { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: #fff; color: var(--lacivert); font-weight: 800; box-shadow: 0 0 0 4px rgba(111, 182, 230, .25); }
.akis-balon, .akis-cikti {
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .14); border-radius: 16px; padding: 18px 20px;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); box-shadow: 0 20px 40px -20px rgba(0, 0, 0, .5);
}
.akis-balon p { font-size: 14.5px; color: rgba(255, 255, 255, .9); }
.akis-balon .akis-tur { font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--gok-acik); margin-bottom: 6px; }
.akis-cikti li { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; font-size: 13.5px; border-top: 1px solid rgba(255, 255, 255, .1); }
.akis-cikti li:first-child { border-top: 0; padding-top: 0; }
.akis-cikti li:last-child { padding-bottom: 0; }
.akis-cikti span { color: rgba(214, 226, 240, .7); }
.akis-cikti b { font-weight: 700; color: #fff; text-align: right; }
.akis-merkez {
  position: relative; z-index: 1; justify-self: center; display: grid; place-items: center; text-align: center;
  padding: 14px 22px; border-radius: 18px; background: rgba(13, 29, 56, .85); border: 1px solid rgba(111, 182, 230, .45);
  box-shadow: 0 0 40px rgba(111, 182, 230, .25);
}
.akis-merkez b { font-size: 14px; font-weight: 800; }
.akis-merkez span { font-size: 13px; font-weight: 800; letter-spacing: .12em; color: var(--gok-acik); }

.cam {
  display: grid; text-align: left; border-radius: 20px; background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1);
  max-width: 1080px; margin-inline: auto;
}
@media (min-width: 860px) { .cam { grid-template-columns: repeat(3, 1fr); } }
.cam > div { display: flex; gap: 14px; padding: 24px; }
.cam > div + div { border-top: 1px solid rgba(255, 255, 255, .08); }
@media (min-width: 860px) { .cam > div + div { border-top: 0; border-left: 1px solid rgba(255, 255, 255, .08); } }
.cam-ik { flex: none; display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .12); }
.cam-ik .ik { width: 18px; height: 18px; }
.cam h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 4px; }
.cam p { font-size: 13px; line-height: 1.55; color: rgba(214, 226, 240, .7); }
.vitrin-not { margin-top: 32px; font-size: 12.5px; color: rgba(214, 226, 240, .5); }

/* --- Özellik kartları --- */
.ozellikler { padding: 96px 0; }
.kart-izgara { display: grid; gap: 24px; }
@media (min-width: 640px) { .kart-izgara { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .kart-izgara { grid-template-columns: repeat(3, 1fr); } }
.kart { background: #fff; border: 1px solid var(--cizgi); border-radius: 20px; padding: 28px; transition: box-shadow .2s, transform .2s; }
.kart:hover { transform: translateY(-2px); box-shadow: 0 20px 40px -24px rgba(27, 54, 93, .25); }
.kart .cip { margin-bottom: 22px; }
.kart p { font-size: 14px; color: var(--ikincil); }

/* --- Paketler --- */
.paketler { padding: 96px 0; background: #fff; border-top: 1px solid var(--cizgi); }
.plan-izgara { display: grid; gap: 24px; max-width: 860px; margin-inline: auto; align-items: center; }
@media (min-width: 780px) { .plan-izgara { grid-template-columns: 1fr 1fr; } }
.plan { position: relative; display: flex; flex-direction: column; padding: 32px 28px 28px; border-radius: 24px; background: #fff; border: 1px solid var(--cizgi); box-shadow: 0 1px 2px rgba(15, 26, 43, .04); }
.plan h3 { font-size: 20px; font-weight: 800; color: var(--metin); }
.plan-alt { font-size: 13px; color: var(--ikincil); margin-top: 4px; }
.plan-fiyat { margin: 22px 0 22px; font-size: 40px; font-weight: 900; letter-spacing: -.02em; color: var(--metin); line-height: 1; }
.plan-fiyat small { margin-left: 4px; font-size: 14px; font-weight: 500; letter-spacing: 0; color: var(--soluk); }
.plan ul { display: grid; gap: 11px; margin-bottom: 30px; }
.plan li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--govde); }
.plan li .ik { width: 17px; height: 17px; margin-top: 2px; color: var(--gok); stroke-width: 2.6; }
.plan li.yok { color: var(--soluk); }
.plan li.yok .ik { color: #c3cbd6; }
.plan .dugme { margin-top: auto; }
.plan-plus {
  background: linear-gradient(160deg, #23457a 0%, var(--lacivert) 55%, #152c4e 100%); border-color: transparent; color: #fff;
  box-shadow: 0 30px 60px -20px rgba(27, 54, 93, .55); padding-block: 40px 32px;
}
@media (min-width: 780px) { .plan-plus { transform: scale(1.03); } }
.plan-plus h3, .plan-plus .plan-fiyat { color: #fff; }
.plan-plus .plan-alt, .plan-plus .plan-fiyat small { color: rgba(214, 226, 240, .75); }
.plan-plus li { color: rgba(255, 255, 255, .92); }
.plan-plus li .ik { color: var(--gok-acik); }
.plan-rozet {
  position: absolute; top: -12px; right: 24px; padding: 4px 12px; border-radius: 99px; background: var(--gok-acik); color: var(--gece);
  font-size: 11px; font-weight: 800; letter-spacing: .06em; box-shadow: 0 4px 12px rgba(111, 182, 230, .4);
}
.paket-not { display: flex; justify-content: center; align-items: center; gap: 8px; max-width: 860px; margin: 36px auto 0; font-size: 13.5px; color: var(--ikincil); text-align: center; }
.paket-not .ik { width: 16px; height: 16px; color: var(--gok); }

/* --- S.S.S --- */
.sss { padding: 96px 0; border-top: 1px solid var(--cizgi); }
.sss-liste { display: grid; gap: 12px; }
.sss-liste details { background: #fff; border: 1px solid var(--cizgi); border-radius: 14px; transition: box-shadow .2s; }
.sss-liste details[open] { box-shadow: 0 10px 30px -18px rgba(27, 54, 93, .25); }
.sss-liste summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 20px; cursor: pointer; list-style: none;
  font-size: 15.5px; font-weight: 700; color: var(--metin);
}
.sss-liste summary::-webkit-details-marker { display: none; }
.sss-liste summary .ik { width: 18px; height: 18px; color: var(--gok); transition: transform .2s; }
.sss-liste details[open] summary .ik { transform: rotate(180deg); }
.sss-liste details p { padding: 0 20px 20px; font-size: 14px; color: var(--ikincil); }

/* --- Çağrı bandı --- */
.cagri {
  position: relative; padding: 80px 0; text-align: center; color: #fff; background-color: var(--lacivert); overflow: hidden;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='98' viewBox='0 0 56 98'%3E%3Cpath d='M28 66 0 50V18L28 2l28 16v32zm0 32L0 82V50l28-16 28 16v32z' fill='none' stroke='%23ffffff' stroke-opacity='.07' stroke-width='1'/%3E%3C/svg%3E");
}
.cagri h2 { font-size: clamp(30px, 4.4vw, 46px); font-weight: 900; letter-spacing: -.02em; line-height: 1.1; }
.cagri p { margin: 14px 0 32px; font-size: 17px; color: rgba(214, 226, 240, .85); }
.dugme-cagri { padding: 16px 40px; border-radius: 16px; background: #fff; color: var(--lacivert); font-size: 18px; font-weight: 900; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, .2); transition: transform .3s; }
.dugme-cagri:hover { transform: scale(1.05); }

/* --- Alt bilgi --- */
.alt { background: var(--gece); color: rgba(214, 226, 240, .65); padding: 64px 0 32px; border-top: 1px solid #16274a; font-size: 14px; }
.alt-ust { display: grid; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
@media (min-width: 768px) { .alt-ust { grid-template-columns: 1fr auto; } }
.alt-marka img { height: 46px; width: auto; margin-bottom: 16px; filter: brightness(0) invert(1); }
.alt-marka p { max-width: 340px; font-size: 13.5px; }
.alt-sutunlar { display: flex; gap: 64px; }
.alt-sutunlar div { display: grid; gap: 10px; align-content: start; }
.alt-sutunlar h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.alt-sutunlar a { text-decoration: none; font-size: 13.5px; transition: color .15s; }
.alt-sutunlar a:hover { color: #fff; }
.alt-alt { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-top: 24px; font-size: 12.5px; }
.alt-alt a { text-decoration: none; }
.alt-alt a:hover { color: #fff; }

.yukari {
  position: fixed; right: 20px; bottom: 20px; z-index: 30; display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: var(--lacivert); color: #fff; box-shadow: 0 10px 20px -6px rgba(15, 26, 43, .4);
  opacity: 0; transform: translateY(10px); pointer-events: none; transition: opacity .2s, transform .2s;
}
.yukari.gorunur { opacity: 1; transform: none; pointer-events: auto; }
.yukari .ik { width: 20px; height: 20px; }