/* Giriş, nöron ve öğrenme bölümlerinin demo stilleri */

/* kapak: tuval tüm slaytı kaplar */
.cover .stage { position: absolute; inset: 0; border: 0; border-radius: 0; background: transparent; }
.cover .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

/* ---------- YZ halkaları ---------- */
.ring-wrap { display: grid; grid-template-columns: minmax(200px, 0.42fr) 1fr; }
.ring-canvas { position: relative; min-height: 0; }
.ring-canvas canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.ring-info {
  align-self: end;
  margin: 0 0 20px 20px;
  padding: 14px 16px;
  border-left: 2px solid var(--line);
}
.ring-info h3 { margin: 0 0 6px; font-size: 1.1rem; }
.ring-info p { margin: 0 0 6px; color: var(--ink-2); font-size: 0.92rem; line-height: 1.45; }
.ring-info .ex b { color: var(--ink); font-family: var(--f-display); font-weight: 600; }
.ring-list { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 14px; border-top: 1px solid var(--line); }
.ring-btn {
  font-family: var(--f-display); font-size: 0.82rem; font-weight: 600;
  padding: 0.3em 0.8em; border-radius: 999px; cursor: pointer;
  border: 1px solid color-mix(in srgb, var(--c) 45%, transparent);
  background: transparent; color: var(--ink-2);
}
.ring-btn.on { background: color-mix(in srgb, var(--c) 22%, transparent); color: var(--ink); border-color: var(--c); }

/* ---------- Uzman sistem ---------- */
.expert {
  position: relative;
  display: grid; grid-template-columns: 1fr 1.25fr 1fr; gap: 28px;
  padding: 18px 20px; min-height: 100%;
}
.ex-col { position: relative; z-index: 1; display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.ex-col h4 { margin: 0; font-family: var(--f-display); font-size: 1.05rem; color: var(--ink); }
.ex-sub { margin: -4px 0 6px; font-size: 0.82rem; color: var(--muted); }
.ex-lines { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; }
.fact {
  display: flex; align-items: center; gap: 10px; text-align: left;
  padding: 7px 10px; border-radius: var(--r-sm);
  border: 1px solid var(--line); background: var(--bg);
  font-family: var(--f-display); font-size: 0.84rem; color: var(--ink-2); cursor: pointer;
}
.fact i { width: 14px; height: 14px; flex: none; border-radius: 4px; border: 1.5px solid var(--muted); }
.fact.on { color: var(--ink); border-color: rgba(116,169,255,.55); }
.fact.on i { background: var(--blue); border-color: var(--blue); }
.fact.der { cursor: default; border-color: rgba(244,183,64,.6); animation: pop .4s ease; }
.fact.der i { background: var(--gold); border-color: var(--gold); border-radius: 50%; }
.derived { display: flex; flex-direction: column; gap: 7px; margin-top: 6px; }
.rule {
  display: grid; grid-template-columns: auto 1fr; gap: 10px;
  padding: 7px 10px; border-radius: var(--r-sm);
  border: 1px solid var(--line); background: var(--bg);
  font-family: var(--f-display); font-size: 0.8rem; color: var(--ink-2);
  transition: border-color .3s, opacity .3s, background .3s;
}
.rule > b { color: var(--muted); font-family: var(--f-num); font-weight: 500; font-size: 0.75rem; padding-top: 1px; }
.rule small { color: var(--muted); font-weight: 700; font-size: 0.7rem; }
.rule span { color: var(--ink); }
.rule .neg-cond { color: var(--neg); }
.rule .then { margin-top: 2px; color: var(--ink); }
.rule.fired { border-color: var(--gold); background: rgba(244,183,64,.1); box-shadow: 0 0 18px rgba(244,183,64,.18); }
.rule.fired > b { color: var(--gold); }
.rule.dim { opacity: 0.38; }
.verdict { min-height: 64px; padding: 12px 14px; border-radius: var(--r-md); border: 1px dashed var(--line); color: var(--muted); font-family: var(--f-display); }
.verdict p { margin: 0 0 6px; }
.verdict.ok { border: 1px solid var(--pos); background: rgba(75,227,160,.08); color: var(--ink); font-weight: 600; animation: pop .4s ease; }
.verdict.none { border-color: var(--neg); color: var(--ink-2); }
.verdict small { display: block; font-family: var(--f-body); font-size: 0.85rem; }
.ex-col h5 { margin: 12px 0 0; font-family: var(--f-display); font-size: 0.85rem; color: var(--ink-2); }
.trace { margin: 0; padding-left: 1.2em; font-size: 0.82rem; color: var(--ink-2); line-height: 1.45; }
.trace li { margin-bottom: 5px; animation: pop .35s ease; }
.trace li b { color: var(--gold); font-family: var(--f-num); font-weight: 500; }
.trace .empty { list-style: none; margin-left: -1.2em; color: var(--muted); }
@keyframes pop { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---------- Yapay nöron ---------- */
.neuron-ctl {
  display: grid; grid-template-columns: auto auto auto; gap: 6px 18px; align-items: center;
  padding: 12px 16px; border-top: 1px solid var(--line); background: rgba(10,15,44,.55);
  font-family: var(--f-display); font-size: 0.86rem;
}
.neuron-ctl .nl { color: var(--ink); font-weight: 600; }
.neuron-ctl label { color: var(--ink-2); display: inline-flex; gap: 8px; align-items: center; }
.neuron-ctl .nrow { grid-column: 1 / -1; display: flex; gap: 12px; flex-wrap: wrap; margin-top: 4px; }
.neuron-ctl > label:nth-of-type(7) { grid-column: span 2; }

/* ---------- Katmanlar ---------- */
.layer-ctl { position: absolute; left: 0; right: 0; bottom: 6px; height: 56px; pointer-events: none; }
.lc {
  position: absolute; bottom: 0; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 3px; pointer-events: auto;
  font-family: var(--f-display); font-size: 0.78rem; color: var(--ink-2);
}
.lc > div { display: flex; align-items: center; gap: 6px; background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 2px; }
.lc button { width: 24px; height: 24px; border-radius: 50%; border: 0; background: transparent; color: var(--ink); cursor: pointer; font-size: 1rem; line-height: 1; }
.lc button:hover { background: var(--line); }
.lc b { font-family: var(--f-num); font-weight: 500; min-width: 1ch; text-align: center; }
.param-count { font-family: var(--f-num); font-size: 0.82rem; color: var(--ink-2); }
.param-count b { color: var(--gold); font-size: 1.15rem; }

/* ---------- Perceptron ---------- */
.pc-grid { position: absolute; inset: 0; display: grid; grid-template-columns: 1.35fr 1fr; }
.pc-plot { position: relative; min-height: 0; }
.pc-plot canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.pc-side { display: flex; flex-direction: column; gap: 12px; padding: 16px 18px 16px 0; min-height: 0; overflow: auto; }
.pc-neuron { position: relative; height: 150px; flex: none; }
.pc-neuron canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.pc-status { margin: 0; font-family: var(--f-display); font-weight: 600; color: var(--ink-2); font-size: 0.95rem; }
.pc-status.win { color: var(--pos); }
table.truth tr.hl td { background: rgba(244,183,64,.15); }

/* ---------- Backprop ---------- */
.bp-grid { position: absolute; inset: 0; display: grid; grid-template-columns: 1.4fr 1fr; }
.bp-plot { position: relative; min-height: 0; }
.bp-plot canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.bp-panel { padding: 16px 18px; border-left: 1px solid var(--line); overflow: auto; font-size: 0.9rem; }
.bp-panel h4 { margin: 0 0 8px; font-family: var(--f-display); font-size: 1.1rem; color: var(--gold); }
.bp-panel p { margin: 0 0 10px; color: var(--ink-2); line-height: 1.45; }
.bp-panel p.small { font-size: 0.85rem; color: var(--muted); margin-top: 10px; }
.bp-row { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0; border-bottom: 1px solid rgba(42,53,112,.6); font-family: var(--f-num); font-size: 0.82rem; color: var(--ink-2); }
.bp-row b { font-weight: 600; color: var(--ink); white-space: nowrap; }
.bp-row.gold b { color: var(--gold); }
.bp-row.pos b { color: var(--pos); }
.bp-row.neg b { color: var(--neg); }
.bp-steps { display: flex; gap: 6px; margin: 0; padding: 0; list-style: none; flex-wrap: wrap; }
.bp-steps li {
  padding: 0.3em 0.9em; border-radius: 999px; border: 1px solid var(--line);
  font-family: var(--f-display); font-weight: 600; font-size: 0.82rem; color: var(--muted);
}
.bp-steps li.done { color: var(--ink-2); border-color: #3c4890; }
.bp-steps li.on { color: #1d1300; background: var(--gold); border-color: var(--gold); }

/* ---------- Oyun alanı ---------- */
.pg-grid {
  position: absolute; inset: 0;
  display: grid; grid-template-columns: 1.15fr 1fr; grid-template-rows: 1fr auto;
}
.pg-net, .pg-map, .pg-loss { position: relative; min-height: 0; }
.pg-net canvas, .pg-map canvas, .pg-loss canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.pg-table { padding: 6px 16px 8px; border-top: 1px solid var(--line); }
.pg-table table.truth td { padding: 3px 10px; }
.pg-loss { min-height: 160px; }
.pg-table table.truth { width: 100%; }
.pg-loss { border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.pg-epoch { margin: 6px 0 0; font-family: var(--f-display); font-size: 0.85rem; color: var(--ink-2); }
.pg-epoch b { font-family: var(--f-num); color: var(--ink); }
.pg-epoch .win { color: var(--pos); font-weight: 700; }

@media (max-width: 860px) {
  .ring-wrap { grid-template-columns: 1fr; grid-template-rows: 340px auto; }
  .ring-wrap .ring-info { order: 2; }
  .expert { grid-template-columns: 1fr; }
  .ex-lines { display: none; }
  .pc-grid, .bp-grid { position: relative; grid-template-columns: 1fr; grid-template-rows: 340px auto; }
  .pc-side { padding: 0 16px 16px; }
  .bp-panel { border-left: 0; border-top: 1px solid var(--line); }
  .pg-grid { position: relative; grid-template-columns: 1fr; grid-template-rows: 260px 300px auto 140px; }
  .neuron-ctl { grid-template-columns: 1fr; }
  .stage .fill { min-height: 340px; }
}

/* kapak yazısının arkasında hafif karartma: okunabilirlik */
.cover::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 1;
  background: linear-gradient(90deg, rgba(10,15,44,.82) 0%, rgba(10,15,44,.5) 32%, transparent 58%);
}

.cover .byline {
  font-family: var(--f-display); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.01em;
  color: var(--gold); margin: -0.4rem 0 1.4rem; display: flex; align-items: center; gap: 12px;
}
.cover .byline::before { content: ""; width: 28px; height: 2px; background: currentColor; border-radius: 1px; }

.cover-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 14px; margin: 0 0 1.4rem; pointer-events: auto; }
.btn.big { font-size: 1.02rem; padding: 0.8em 1.4em; display: inline-flex; align-items: center; gap: 10px; }
.btn.big svg { width: 20px; height: 20px; }
.btn.primary.big { box-shadow: 0 0 0 0 rgba(244,183,64,.5); animation: coverCta 2.4s ease-out infinite; }
.btn.ghost { background: rgba(22,31,79,.6); }
.cover-note { flex-basis: 100%; font-family: var(--f-display); font-size: .85rem; color: var(--muted); max-width: 52ch; }
@keyframes coverCta { 0% { box-shadow: 0 0 0 0 rgba(244,183,64,.45); } 70%, 100% { box-shadow: 0 0 0 16px rgba(244,183,64,0); } }
@media (prefers-reduced-motion: reduce) { .btn.primary.big { animation: none; } }

@media (max-width: 860px) {
  /* bulanık mantık telefonda dikey dizilir, daha uzun tuval ister */
  #bulanik-mantik .stage .fill { min-height: 980px; }
}

.cover .license { font-family: var(--f-display); font-size: .78rem; color: var(--muted); margin-top: 1.2rem; pointer-events: auto; }
.cover .license a { color: var(--ink-2); }

/* kapak: GitHub ve lisans satırı */
.cover-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin-top: 1.1rem; pointer-events: auto; }
.cover-meta a {
  display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
  font-family: var(--f-display); font-size: .85rem; color: var(--ink-2);
  padding: 5px 12px 5px 8px; border-radius: 999px; border: 1px solid var(--line); background: rgba(22,31,79,.55);
  transition: border-color .15s, color .15s;
}
.cover-meta a:hover, .cover-meta a:focus-visible { color: var(--ink); border-color: var(--muted); }
.cover-meta svg { width: 20px; height: 20px; }
.cover-meta img { width: 22px; height: 22px; display: block; }
.cover-meta .lic img + img { margin-left: -3px; }
.cover-meta .lic span { margin-left: 4px; }
.cover .license { margin-top: .7rem; }