:root {
  /* Koyu turkuaz tonları */
  --turkuaz-koyu: #04494d;
  --turkuaz: #05666b;
  --turkuaz-acik: #0a8a90;
  --turkuaz-zemin: #e3f1f2;
  --turkuaz-cizgi: #b9dadd;
  --metin: #10292b;
  --soluk: #4f676c;
  --zemin: #f5f9f9;
  --kart: #ffffff;
  --uyari-metin: #7a4b00;
  --uyari-zemin: #fff1d1;
  --vurgu: #ffd166;
  --golge: 0 1px 2px rgba(6, 60, 64, .06), 0 4px 14px rgba(6, 60, 64, .07);
  --yaricap: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 130px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--metin);
  background: var(--zemin);
}
.kap { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 16px; }
button, input { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--vurgu); outline-offset: 2px; border-radius: 6px; }
.gizli-baslik {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.atla {
  position: absolute; left: 12px; top: -60px; z-index: 50;
  background: #fff; color: var(--turkuaz-koyu); padding: 10px 14px; border-radius: 8px; font-weight: 600;
}
.atla:focus { top: 12px; }

/* ---------- Üst bant ---------- */
.ust {
  color: #fff;
  background-color: var(--turkuaz);
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.10) 0 2px, transparent 2px 46px),
    repeating-linear-gradient(-45deg, rgba(255,255,255,.10) 0 2px, transparent 2px 46px),
    linear-gradient(135deg, var(--turkuaz-koyu), var(--turkuaz));
  border-bottom: 6px solid var(--turkuaz-acik);
  padding: 28px 0 30px;
}
.kurum { margin: 0 0 10px; font-size: .9rem; line-height: 1.35; opacity: .95; }
.kurum strong { font-weight: 700; }
.ust h1 { margin: 0; font-size: clamp(1.55rem, 5.4vw, 2.5rem); line-height: 1.15; letter-spacing: -.01em; }
.ozet { margin: 10px 0 0; font-size: .98rem; opacity: .95; }

.hakkinda-dugme {
  margin-top: 14px; display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.14); color: #fff; border: 1.5px solid rgba(255,255,255,.55);
  padding: 7px 14px; border-radius: 999px; font-weight: 600; font-size: .92rem; cursor: pointer;
}
.hakkinda-dugme:hover { background: rgba(255,255,255,.24); }
.hakkinda-dugme svg { transition: transform .2s; }
.hakkinda-dugme[aria-expanded="true"] svg { transform: rotate(180deg); }

/* ---------- Takvim hakkında paneli ---------- */
.hakkinda { background: #fff; border-bottom: 1px solid var(--turkuaz-cizgi); }
.hakkinda-ic { display: grid; gap: 22px; padding-top: 22px; padding-bottom: 24px; }
.hk-blok h2 { margin: 0 0 8px; font-size: 1.08rem; color: var(--turkuaz-koyu); }
.hk-blok p { margin: 0 0 10px; font-size: .96rem; }
.rektor { border-left: 4px solid var(--turkuaz-acik); padding-left: 14px; }
.rektor .imza { margin-top: 12px; }

/* ---------- Yaklaşan günler ---------- */
.yaklasan { padding-top: 22px; }
.yaklasan h2, .ay-baslik {
  font-size: 1.15rem; margin: 0 0 12px; color: var(--turkuaz-koyu);
}
.kartlar {
  list-style: none; margin: 0; padding: 2px 16px 10px; margin-left: -16px; margin-right: -16px;
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(230px, 78%);
  gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin;
}
.kart {
  scroll-snap-align: start;
  background: var(--kart); border-radius: var(--yaricap); box-shadow: var(--golge);
  border-top: 4px solid var(--turkuaz-acik);
}
.kart button {
  all: unset; box-sizing: border-box; cursor: pointer; display: flex; flex-direction: column; gap: 6px;
  width: 100%; height: 100%; padding: 14px 16px;
}
.kart button:focus-visible { outline: 3px solid var(--vurgu); outline-offset: 2px; border-radius: var(--yaricap); }
.kart .k-tarih { font-size: .85rem; color: var(--soluk); font-weight: 600; }
.kart .k-ad { font-weight: 700; line-height: 1.3; }
.kart.bugun { border-top-color: var(--vurgu); }

/* ---------- Araç çubuğu ---------- */
.takvim { padding-top: 18px; }
.arac {
  position: sticky; top: 0; z-index: 10;
  background: rgba(245, 249, 249, .96);
  backdrop-filter: saturate(1.4) blur(6px); -webkit-backdrop-filter: saturate(1.4) blur(6px);
  border-bottom: 1px solid var(--turkuaz-cizgi);
  padding: 10px 0 10px;
}
.ara {
  position: relative; display: flex; align-items: center;
  background: #fff; border: 1.5px solid var(--turkuaz-cizgi); border-radius: 999px; padding: 0 6px 0 14px;
}
.ara:focus-within { border-color: var(--turkuaz); box-shadow: 0 0 0 3px rgba(5,102,107,.18); }
.ara svg { color: var(--soluk); flex: none; }
.ara input {
  flex: 1; min-width: 0; border: 0; background: transparent; padding: 11px 10px; outline: none; font-size: 16px;
}
.ara input::-webkit-search-cancel-button { display: none; }
.temizle {
  border: 0; background: var(--turkuaz-zemin); color: var(--turkuaz-koyu); width: 32px; height: 32px;
  border-radius: 50%; font-size: 1.2rem; line-height: 1; cursor: pointer; flex: none;
}
.aylar {
  display: flex; gap: 8px; overflow-x: auto; padding: 10px 16px 2px; margin: 0 -16px;
  scrollbar-width: none;
}
.aylar::-webkit-scrollbar { display: none; }
.cip {
  flex: none; border: 1.5px solid var(--turkuaz-cizgi); background: #fff; color: var(--turkuaz-koyu);
  padding: 7px 14px; border-radius: 999px; font-size: .92rem; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.cip[aria-pressed="true"] { background: var(--turkuaz); border-color: var(--turkuaz); color: #fff; }
.cip:disabled { opacity: .4; cursor: default; }
.suzgec { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding-top: 12px; }
.bolumlu {
  display: inline-flex; background: var(--turkuaz-zemin); border-radius: 10px; padding: 3px; max-width: 100%;
}
.bolumlu button {
  border: 0; background: transparent; padding: 6px 11px; border-radius: 8px; font-size: .86rem; font-weight: 600;
  color: var(--turkuaz-koyu); cursor: pointer; white-space: nowrap;
}
.bolumlu button[aria-pressed="true"] { background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.anahtar { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--soluk); cursor: pointer; }
.anahtar input { width: 18px; height: 18px; accent-color: var(--turkuaz); }

/* ---------- Liste ---------- */
.sonuc { color: var(--soluk); font-size: .9rem; margin: 14px 0 6px; }
.ay-grup { margin: 8px 0 26px; }
.ay-baslik { display: flex; align-items: baseline; gap: 8px; padding-top: 6px; }
.ay-baslik span { font-size: .85rem; font-weight: 500; color: var(--soluk); }
.gunler { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.gun {
  display: grid; grid-template-columns: 76px 1fr; gap: 14px; align-items: center;
  background: var(--kart); border-radius: var(--yaricap); box-shadow: var(--golge); padding: 12px 14px 12px 12px;
  transition: box-shadow .3s, background-color .3s;
}
.tarih-kutu {
  text-align: center; background: var(--turkuaz-zemin); color: var(--turkuaz-koyu);
  border-radius: 10px; padding: 8px 4px; line-height: 1.1;
}
.tarih-kutu .gun-no { display: block; font-size: 1.45rem; font-weight: 800; letter-spacing: -.02em; }
.tarih-kutu .gun-no.aralik { font-size: 1.05rem; }
.tarih-kutu .ay-kisa { display: block; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; margin-top: 3px; }
.gun-ad { margin: 0; font-weight: 700; font-size: 1.02rem; line-height: 1.35; }
.gun-alt { margin: 4px 0 0; font-size: .86rem; color: var(--soluk); display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: center; }
.rozet {
  display: inline-block; font-size: .76rem; font-weight: 700; padding: 2px 8px; border-radius: 999px;
  background: var(--turkuaz-zemin); color: var(--turkuaz-koyu); white-space: nowrap;
}
.rozet.bugun { background: var(--vurgu); color: #4a3500; }
.rozet.teyit { background: var(--uyari-zemin); color: var(--uyari-metin); }
.gun.gecmis { opacity: .55; }
.gun.gecmis .tarih-kutu { background: #eef1f2; color: var(--soluk); }
.gun.vurgulu { box-shadow: 0 0 0 3px var(--vurgu), var(--golge); }
.bos {
  text-align: center; padding: 36px 16px; background: #fff; border-radius: var(--yaricap); box-shadow: var(--golge); color: var(--soluk);
}
.bos button {
  margin-top: 10px; border: 0; background: var(--turkuaz); color: #fff; padding: 9px 16px; border-radius: 999px; font-weight: 600; cursor: pointer;
}

/* ---------- Paylaş ---------- */
.gun.paylasilir { grid-template-columns: 76px 1fr auto; }
.paylas {
  width: 40px; height: 40px; border-radius: 50%; border: 1.5px solid var(--turkuaz-cizgi);
  background: #fff; color: var(--turkuaz); cursor: pointer; display: grid; place-items: center; padding: 0;
}
.paylas:hover { background: var(--turkuaz-zemin); }
.paylas-pencere {
  border: 0; border-radius: 16px; padding: 18px; width: min(92vw, 380px);
  box-shadow: 0 20px 50px rgba(0,0,0,.25); color: var(--metin);
}
.paylas-pencere::backdrop { background: rgba(4, 30, 32, .45); }
.pp-ust { display: flex; align-items: center; justify-content: space-between; }
.pp-ust h2 { margin: 0; font-size: 1.15rem; color: var(--turkuaz-koyu); }
.pp-kapat {
  border: 0; background: var(--turkuaz-zemin); color: var(--turkuaz-koyu); width: 34px; height: 34px;
  border-radius: 50%; font-size: 1.3rem; line-height: 1; cursor: pointer;
}
.pp-gun { margin: 8px 0 14px; font-weight: 700; }
.pp-kopyala {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; background: var(--turkuaz); color: #fff; padding: 11px 14px; border-radius: 10px; font-weight: 700; cursor: pointer;
}
.pp-kanallar { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 8px; margin-top: 10px; }
.pp-kanallar a {
  display: block; text-align: center; padding: 10px 6px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: .92rem;
  background: var(--turkuaz-zemin); color: var(--turkuaz-koyu);
}
.pp-kanallar a:hover { background: var(--turkuaz-cizgi); }
.bildirim {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 100;
  background: var(--turkuaz-koyu); color: #fff; padding: 10px 18px; border-radius: 999px; font-weight: 600;
  width: max-content; max-width: calc(100vw - 32px); text-align: center; border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
}

/* ---------- Alt bilgi ---------- */
.alt { margin-top: 30px; background: #062f32; color: #d6eced; border-top: 6px solid var(--turkuaz-acik); padding: 26px 0 30px; margin-top: 30px; font-size: .92rem; }
.alt p { margin: 0 0 8px; }
.alt a { color: #fff; font-weight: 600; word-break: break-all; }
.alt .kucuk { font-size: .82rem; opacity: .8; margin-top: 12px; }
.alt .proje-notu { margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.15); font-style: italic; }

/* ---------- Geniş ekran ---------- */
.basa-don {
  position: fixed; right: 16px; bottom: 20px; z-index: 90;
  width: 48px; height: 48px; border-radius: 50%;
  display: grid; place-items: center; padding: 0; cursor: pointer;
  color: #fff; background: var(--turkuaz); border: 2px solid #fff;
  box-shadow: 0 4px 14px rgba(6, 60, 64, .28);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .2s, transform .2s, visibility .2s, background .15s;
}
.basa-don.gorunur { opacity: 1; visibility: visible; transform: none; }
.basa-don:hover { background: var(--turkuaz-koyu); }
.basa-don:focus-visible { outline: 3px solid var(--vurgu); outline-offset: 2px; }

@media (min-width: 720px) {
  .basa-don { right: 28px; bottom: 28px; width: 52px; height: 52px; }
  html { scroll-padding-top: 130px; }
  .ust { padding: 40px 0 44px; }
  .kurum { font-size: .95rem; }
  .kartlar {
    grid-auto-flow: row; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    overflow: visible; margin: 0; padding: 2px 0 10px;
  }
  .aylar { flex-wrap: wrap; overflow: visible; margin: 0; padding: 10px 0 2px; }
  .gunler { grid-template-columns: 1fr 1fr; }
  .hakkinda-ic { grid-template-columns: 1fr 1.25fr; gap: 32px; padding-top: 28px; padding-bottom: 30px; }
  .gun { grid-template-columns: 84px 1fr; }
  .gun.paylasilir { grid-template-columns: 84px 1fr auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}