/**
 * Akademik Takvim (İnteraktif) — page-akademik-takvim.php arayüzü.
 * Tüm seçiciler .hku-at altında SCOPED → tema geneline sızmaz.
 * Palet bordo-güvenli: Ders = erguvan (plum), YEŞİL/MAVİ yok (merkez tema kuralı).
 * @author Mehmet Ararat — HKÜ BT Web Grubu
 */
.hku-at{
  --at-surface:#fff;
  --at-surface-2:#F3ECE0;
  --at-ink:#241D18;
  --at-ink-60:#726858;
  --at-ink-40:#9A9184;
  --at-line:#E6DCCB;
  --at-bordo:#6E1423;
  --at-bordo-dark:#4C0E19;
  --at-bordo-tint:#F5E5E3;
  --at-gold:#A87A32;
  --at-gold-tint:#F7EEDA;
  --at-terracotta:#B15A34;
  --at-terracotta-tint:#F7E5DA;
  --at-plum:#8E4B6E;          /* Ders — yeşilin bordo-güvenli karşılığı */
  --at-plum-tint:#F3E6EE;
  --at-slate:#6B6470;         /* Diğer */
  --at-slate-tint:#EFECF0;
  --at-radius:14px;
  --at-shadow:0 1px 2px rgba(36,29,24,.04),0 8px 24px rgba(36,29,24,.06);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--at-ink);
  line-height:1.5;
  max-width:1180px;margin:0 auto;
}
.hku-at *{box-sizing:border-box;}

/* — Abonelik butonları — */
.hku-at__subscribe{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:0 0 26px;}
.hku-at__btn{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:999px;font-size:13px;font-weight:600;text-decoration:none;border:1px solid var(--at-line);background:var(--at-surface);color:var(--at-ink);cursor:pointer;transition:transform .15s,border-color .15s;}
.hku-at__btn:hover{border-color:var(--at-ink-40);transform:translateY(-1px);}
.hku-at__btn--primary{background:var(--at-ink);color:#fff;border-color:var(--at-ink);}
.hku-at__btn--primary:hover{background:var(--at-bordo);border-color:var(--at-bordo);}

/* — Yıl sekmeleri — */
.hku-at__yearbar{display:flex;flex-wrap:wrap;gap:4px;padding:8px;background:var(--at-surface-2);border-radius:12px;width:max-content;max-width:100%;margin:0 auto 18px;}
.hku-at__year-tab{border:none;background:transparent;font-family:'IBM Plex Mono',monospace;font-weight:600;font-size:12.5px;letter-spacing:.03em;padding:9px 18px;border-radius:9px;color:var(--at-ink-60);cursor:pointer;transition:all .18s;}
.hku-at__year-tab:hover{color:var(--at-ink);}
.hku-at__year-tab.is-active{background:var(--at-ink);color:#fff;}

/* — Dönem sekmeleri — */
.hku-at__tabbar{display:flex;flex-wrap:wrap;gap:6px;background:var(--at-surface-2);padding:5px;border-radius:999px;width:max-content;max-width:100%;margin:0 auto 18px;}
.hku-at__tab{border:none;background:transparent;font-weight:600;font-size:13.5px;padding:10px 20px;border-radius:999px;color:var(--at-ink-60);cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .18s;white-space:nowrap;}
.hku-at__tab .dot{width:7px;height:7px;border-radius:50%;background:currentColor;opacity:.5;}
.hku-at__tab.is-active{background:var(--at-surface);box-shadow:var(--at-shadow);}
.hku-at__tab.is-active[data-accent="guz"]{color:var(--at-terracotta);}
.hku-at__tab.is-active[data-accent="bahar"]{color:var(--at-gold);}
.hku-at__tab.is-active[data-accent="yaz"]{color:var(--at-plum);}
.hku-at__tab.is-active[data-accent="lisansustu"]{color:var(--at-bordo);}
.hku-at__tab.is-active .dot{opacity:1;}

/* — Kategori filtreleri — */
.hku-at__filters{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:0 0 26px;}
.hku-at__chip{border:1px solid var(--at-line);background:var(--at-surface);padding:7px 14px;border-radius:999px;font-size:12.5px;font-weight:600;color:var(--at-ink-60);cursor:pointer;display:flex;align-items:center;gap:7px;transition:all .15s;}
.hku-at__chip .sw{width:8px;height:8px;border-radius:50%;}
.hku-at__chip.is-active{background:var(--at-ink);color:#fff;border-color:var(--at-ink);}
.hku-at__chip.is-active .sw{background:#fff!important;}

/* — Durum kartı + ilerleme — */
.hku-at__status{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;background:var(--at-surface);border:1px solid var(--at-line);border-radius:var(--at-radius);padding:16px 20px;margin:0 0 26px;}
.hku-at__status-left{display:flex;align-items:center;gap:14px;}
.hku-at__badge{font-family:'IBM Plex Mono',monospace;font-size:11px;font-weight:600;letter-spacing:.04em;padding:6px 11px;border-radius:999px;text-transform:uppercase;}
.hku-at__status-title{font-weight:600;font-size:14.5px;}
.hku-at__status-sub{font-size:12.5px;color:var(--at-ink-60);margin-top:2px;}
.hku-at__track{width:220px;max-width:45vw;height:6px;border-radius:999px;background:var(--at-surface-2);overflow:hidden;}
.hku-at__fill{height:100%;border-radius:999px;transition:width .4s;}

/* — Yerleşim: ray + liste — */
.hku-at__layout{display:grid;grid-template-columns:140px 1fr;gap:36px;padding-bottom:20px;}
.hku-at__rail{position:sticky;top:110px;align-self:start;}
.hku-at__rail-track{position:relative;margin-left:6px;border-left:2px solid var(--at-line);padding-left:20px;}
.hku-at__rail-month{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--at-ink-40);padding:9px 0;cursor:pointer;position:relative;transition:color .15s;}
.hku-at__rail-month::before{content:"";position:absolute;left:-25px;top:13px;width:8px;height:8px;border-radius:50%;background:var(--at-surface);border:2px solid var(--at-line);}
.hku-at__rail-month.is-current{color:var(--at-ink);font-weight:600;}
.hku-at__rail-month.is-current::before{background:var(--at-bordo);border-color:var(--at-bordo);}

.hku-at__content{min-width:0;}
.hku-at__mgroup{margin-bottom:32px;scroll-margin-top:110px;}
.hku-at__mhead{font-family:'Fraunces',Georgia,serif;font-size:21px;font-weight:600;margin:0 0 14px;display:flex;align-items:baseline;gap:10px;color:var(--at-ink);}
.hku-at__mhead .count{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--at-ink-40);font-weight:500;}

/* — Etkinlik kartı — */
.hku-at__event{display:grid;grid-template-columns:104px 1fr auto;gap:16px;align-items:start;padding:15px 18px;background:var(--at-surface);border:1px solid var(--at-line);border-radius:12px;margin-bottom:9px;border-left:3px solid var(--at-slate);transition:box-shadow .15s,transform .15s;}
.hku-at__event:hover{box-shadow:var(--at-shadow);transform:translateY(-1px);}
.hku-at__event[data-cat="kayit"]{border-left-color:var(--at-gold);}
.hku-at__event[data-cat="sinav"]{border-left-color:var(--at-bordo);}
.hku-at__event[data-cat="tatil"]{border-left-color:var(--at-terracotta);}
.hku-at__event[data-cat="ders"]{border-left-color:var(--at-plum);}
.hku-at__edate{font-family:'IBM Plex Mono',monospace;font-size:12.5px;font-weight:600;color:var(--at-ink);line-height:1.35;padding-top:2px;}
.hku-at__ebody .tag{display:inline-block;font-size:10.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:2.5px 8px;border-radius:5px;margin-bottom:7px;background:var(--at-slate-tint);color:var(--at-slate);}
.hku-at__event[data-cat="kayit"] .tag{background:var(--at-gold-tint);color:var(--at-gold);}
.hku-at__event[data-cat="sinav"] .tag{background:var(--at-bordo-tint);color:var(--at-bordo);}
.hku-at__event[data-cat="tatil"] .tag{background:var(--at-terracotta-tint);color:var(--at-terracotta);}
.hku-at__event[data-cat="ders"] .tag{background:var(--at-plum-tint);color:var(--at-plum);}
.hku-at__etitle{font-size:14px;font-weight:500;color:var(--at-ink);line-height:1.45;}
.hku-at__event.is-past{opacity:.5;}
.hku-at__event.is-past:hover{opacity:.85;}
.hku-at__eadd{width:32px;height:32px;border-radius:50%;border:1px solid var(--at-line);background:var(--at-surface);display:flex;align-items:center;justify-content:center;color:var(--at-ink-60);text-decoration:none;font-size:16px;line-height:1;transition:all .15s;}
.hku-at__eadd:hover{background:var(--at-ink);color:#fff;border-color:var(--at-ink);}

.hku-at__empty{color:var(--at-ink-60);font-size:14px;padding:8px 0;}

/* — Mobil — */
@media (max-width:860px){
  .hku-at__layout{grid-template-columns:1fr;gap:0;}
  .hku-at__rail{display:none;}
  .hku-at__event{grid-template-columns:84px 1fr auto;gap:12px;padding:13px 14px;}
  .hku-at__track{width:150px;}
}
@media (max-width:520px){
  .hku-at__event{grid-template-columns:1fr auto;}
  .hku-at__edate{grid-column:1 / -1;color:var(--at-ink-60);}
}