/* ===== Tema ===== */
:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --border:#e6e8ef;
  --muted:#718096;
  --ink:#0f172a;
  --brand:#2563eb;
  --brand-2:#1d4ed8;
  --ok:#16a34a;
  --danger:#dc2626;
  --shadow:0 8px 24px rgba(15,23,42,.05), 0 1px 6px rgba(15,23,42,.04);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,#f9fbff, #f2f4fa 240px, var(--bg));
  color:var(--ink);
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}

/* ===== Sayfa iskeleti ===== */
.page{max-width:1200px;margin:0 auto;padding:24px 16px}
.hero h1{font-size:clamp(20px,2.2vw,28px);margin:0 0 4px;font-weight:700}
.hero p{margin:4px 0 12px;color:var(--muted);font-size:14px}

.form-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:12px 0 16px}
@media(max-width:980px){.form-row{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.form-row{grid-template-columns:1fr}}

.field label{display:block;font-weight:600;margin:0 0 6px;font-size:13px;color:#2b3a55}
.field input,.field select{
  width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;
  outline:none; transition:box-shadow .15s,border-color .15s;font-size:14px
}
.field input:focus,.field select:focus{border-color:#cbd5e1; box-shadow:0 0 0 3px #e8efff}

/* ===== Bölüm (Ders) ===== */
.session{
  border:1px solid var(--border); border-radius:16px; background:var(--card);
  box-shadow:var(--shadow); padding:12px; margin-bottom:16px;
}
.session-title{
  display:flex; align-items:center; gap:8px; margin:0 4px 10px;
  font-size:clamp(20px,2.6vw,26px); font-weight:900;   /* daha büyük */
}
.session-title::before{
  content:""; width:8px; height:8px; border-radius:999px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 5px rgba(37,99,235,.10);
}

/* === Kart grid: 2 sütun, mobilde 1 === */
.session-grid{
  display:grid;
  gap:12px;
  grid-template-columns: repeat(2, minmax(0,1fr));
}
@media (max-width: 900px){
  .session-grid{ grid-template-columns: 1fr; }
}

/* ===== Kart (Konu) ===== */
.topic-card{
  position:relative; background:#fff; border:1px solid var(--border); border-radius:16px;
  padding:16px 14px 12px; box-shadow:var(--shadow);
  transition:transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.topic-card:hover{ transform:translateY(-1px); box-shadow:0 10px 26px rgba(15,23,42,.07) }
.topic-card.disabled{ opacity:.55; filter:saturate(.9); cursor:not-allowed }
.topic-card.picked{ border-color:#bfe7c9; box-shadow:0 10px 26px rgba(22,163,74,.08) }

/* kart başlığı sol hizalı */
.topic-title{
  margin:0 0 8px; text-align:left; color:#173b72;
  font-weight:500; line-height:1.28; letter-spacing:.1px;
  font-size:clamp(17px,2vw,22px);
}

/* bilgi ve detay butonu kaldırıldı */
.info-list{display:none!important}
.detail-btn{display:none!important}

/* alt şerit: sadece kontenjan rozeti, sağda */


/* seçim anahtarı (sağ üst) */
.pick-dot{
  position:absolute; right:10px; top:10px; width:22px;height:22px;border-radius:999px;
  background:#f1f5ff; border:2px solid #c5d2ff; display:grid;place-items:center;
  transition:transform .12s,border-color .12s,background .12s;
}
.pick-dot::after{content:""; width:10px;height:10px;border-radius:999px;background:transparent}
.topic-card.picked .pick-dot{ background:#e7f8ee; border-color:#86efac }
.topic-card.picked .pick-dot::after{ background:var(--ok) }

/* ===== Alt sabit bar ===== */
.footer-bar{
  position:sticky; bottom:10px; z-index:5;
  margin-top:14px; background:#fff; border:1px solid var(--border); border-radius:12px;
  box-shadow:var(--shadow); padding:8px 10px; display:flex; align-items:center; gap:10px; justify-content:space-between
}
.footer-bar strong{font-weight:700}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{background:#eef2f7;border:1px solid var(--border);border-radius:999px;padding:5px 8px;font-size:12px;display:flex;gap:6px;align-items:center}
.chip button{border:none;background:transparent;color:var(--danger);cursor:pointer;font-weight:700}

button#submit{
  border:none;border-radius:10px;padding:9px 14px;font-weight:700;font-size:14px;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));cursor:pointer
}
button#submit[disabled]{opacity:.6;cursor:not-allowed}

/* ===== Toast & Kayıt sonrası şerit ===== */
.toast{
  position:fixed; right:16px; bottom:16px; z-index:50;
  background:#0ea5e9; color:#fff; padding:10px 12px;
  border-radius:10px; box-shadow:var(--shadow); font-weight:700;
  animation:toast-in .18s ease-out;
}
.toast.ok{ background:#16a34a }
.toast.err{ background:#dc2626 }
@keyframes toast-in{ from{transform:translateY(8px);opacity:.0} to{transform:none;opacity:1} }

.done-bar{
  position:sticky; top:8px; z-index:5; display:flex; gap:10px; align-items:center;
  margin-bottom:12px; background:#ecfdf5; color:#065f46; border:1px solid #a7f3d0;
  border-radius:12px; padding:10px 12px; font-weight:700;
}

/* Hero alanını ortala ve logoyu ayarla */
.hero{
  text-align:center;
}

.hero-logo{
  width:88px;             /* dilersen 72–120px arası oynatabilirsin */
  height:auto;
  display:block;
  margin:0 auto 10px;     /* altta biraz boşluk */
  object-fit:contain;
}

/* Başlık biraz daha vurgulu ama gözü yormasın */
.hero h1{
  font-weight:800;
  letter-spacing:.2px;
}

.warn-banner{
  margin:8px 0 12px; padding:10px 12px; border-radius:10px;
  background:#fff7ed; border:1px solid #fed7aa; color:#7c2d12; font-size:14px;
}