:root {
  --bg: #ffffff;
  --mint: #eff5f0;
  --surface: #ffffff;
  --field: #ffffff;
  --text: #1b1d1c;
  --muted: #5d6360;
  --border: #d7ddd9;
  --green: #2a7a31;
  --green-hover: #226528;
  --green-soft: #e3f0e4;
  --bad: #c9453b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 20, .06), 0 6px 20px rgba(16, 24, 20, .06);
  --glow: linear-gradient(90deg, #7ed89a, #6fa8ff 45%, #b58cff 75%, #f3a6d8);
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas, monospace;
  --sans: "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Inter Tight", "Noto Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--sans);
  min-height: 100vh;
}

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 24px; border-bottom: 1px solid var(--border); flex-wrap: wrap;
}
.brand {
  display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text);
  font: 800 22px/1 var(--display); letter-spacing: -.03em;
}
.logo {
  width: 28px; height: 28px; display: grid; place-items: center;
  background: var(--green); color: #fff; border-radius: 8px; font-size: 15px;
}

/* Pill segment (model, dil) */
.seg {
  display: inline-flex; align-items: center; gap: 2px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 99px; padding: 3px;
}
.seg-label { color: var(--muted); font-size: 13px; padding: 0 8px 0 10px; }
.seg-btn {
  background: transparent; color: var(--muted); border: 0; border-radius: 99px;
  padding: 6px 14px; cursor: pointer; font: 500 14px var(--sans); transition: background .15s, color .15s;
}
.seg-btn:hover { color: var(--text); }
.seg-select {
  width: auto; border: 0; background: transparent; color: var(--muted); border-radius: 99px;
  padding: 6px 10px; font: 500 14px var(--sans); cursor: pointer; box-shadow: none;
}
.seg-select:focus { box-shadow: none; }
.seg-select.active { background: var(--green-soft); color: var(--green); font-weight: 600; }
.seg-btn.active { background: var(--green-soft); color: var(--green); font-weight: 600; }

/* Hero */
.hero { max-width: 860px; margin: 0 auto; padding: 56px 16px 48px; text-align: center; }
h1 {
  font: 800 clamp(30px, 5vw, 42px)/1.1 var(--display); letter-spacing: -.025em; margin: 0 0 14px;
}
.lead { margin: 0 auto 32px; color: #333836; font-size: 16.5px; max-width: 700px; }

/* Fırlanan rainbow haşiyə: conic-gradient-in bucağı animasiya olunur */
@property --angle { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
@keyframes spin { to { --angle: 360deg; } }

.composer {
  --rainbow: conic-gradient(from var(--angle), #ff5f6d, #ffb347, #ffe66d, #7ed89a, #4fc3f7, #6f86ff, #b58cff, #ff7ad9, #ff5f6d);
  position: relative; text-align: left; border-radius: var(--radius); padding: 16px 16px 14px;
  border: 2px solid transparent;
  background: linear-gradient(var(--surface), var(--surface)) padding-box, var(--rainbow) border-box;
  animation: spin 4s linear infinite;
}
.composer::before {
  --rainbow: conic-gradient(from var(--angle), #ff5f6d, #ffb347, #ffe66d, #7ed89a, #4fc3f7, #6f86ff, #b58cff, #ff7ad9, #ff5f6d);
  content: ""; position: absolute; inset: -4px; border-radius: 18px; z-index: -1;
  background: var(--rainbow); opacity: .35; filter: blur(14px);
  animation: spin 4s linear infinite;
}
.composer:focus-within, .composer:focus-within::before { animation-duration: 2s; }
.composer:focus-within::before { opacity: .5; }
@media (prefers-reduced-motion: reduce) {
  .composer, .composer::before { animation: none; }
}
#idea {
  width: 100%; min-height: 110px; border: 0; outline: none; resize: vertical;
  font: 16px/1.55 var(--sans); color: var(--text); background: transparent; padding: 0;
}
#idea::placeholder { color: #8a908d; }
.composer-bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }

/* Buttons */
.btn {
  border: 0; border-radius: 99px; padding: 10px 20px; cursor: pointer;
  font: 600 15px var(--sans); background: var(--green); color: #fff;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .15s, transform .05s, opacity .15s;
}
.btn:hover:not(:disabled) { background: var(--green-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* Examples */
.examples { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px; margin: 18px 0 28px; font-size: 13.5px; color: var(--muted); }
.example {
  background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 99px;
  padding: 6px 14px; cursor: pointer; font: 13.5px var(--sans); max-width: 100%;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; box-shadow: var(--shadow);
}
.example:hover { border-color: var(--green); color: var(--green); }

/* Fields */
input, select {
  width: 100%; background: var(--field); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  font: 14.5px var(--sans); padding: 10px 12px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(42, 122, 49, .15); }
select { cursor: pointer; }

.details-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; text-align: left; }
@media (max-width: 640px) { .details-grid { grid-template-columns: 1fr; } }
.details-grid label, .grid label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; color: var(--muted); }

/* Settings */
.settings { margin-top: 20px; text-align: left; }
.settings summary {
  cursor: pointer; list-style: none; user-select: none; text-align: center;
  color: var(--green); font-weight: 600; font-size: 14px;
}
.settings summary::-webkit-details-marker { display: none; }
.settings summary::after { content: " ▾"; }
.settings[open] summary::after { content: " ▴"; }
.settings[open] summary { margin-bottom: 16px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 420px) { .grid { grid-template-columns: 1fr; } }

.toggles { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 14px; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle span {
  display: inline-block; padding: 7px 14px; border-radius: 99px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); color: var(--muted); font-size: 13.5px;
  transition: all .15s;
}
.toggle input:checked + span { background: var(--green-soft); border-color: var(--green); color: var(--green); font-weight: 600; }
.toggle input:focus-visible + span { box-shadow: 0 0 0 3px rgba(42, 122, 49, .25); }

/* Result */
.result { background: var(--mint); padding: 56px 16px 72px; }
.result > * { max-width: 900px; margin-left: auto; margin-right: auto; }
h2 {
  font: 800 clamp(28px, 4.5vw, 40px)/1.1 var(--display); letter-spacing: -.025em;
  text-align: center; margin: 0 auto 22px;
}
.tabs {
  display: flex; gap: 4px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 99px; padding: 4px; max-width: 460px;
}
.tab {
  flex: 1; background: transparent; color: var(--muted); border: 0; border-radius: 99px;
  padding: 9px 14px; cursor: pointer; font: 600 14px var(--sans);
}
.tab.active { background: var(--green); color: #fff; }
.mode-help { text-align: center; margin-top: 12px; margin-bottom: 18px; font-size: 14px; color: var(--muted); }

.notice {
  margin: 0 auto 16px; padding: 10px 14px; border-radius: 10px; font-size: 13.5px;
  background: #fff6e0; border: 1px solid #f0d58a; color: #6b5310;
}
.notice[hidden] { display: none; }
.output-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px;
}
.output {
  width: 100%; min-height: 420px; resize: vertical; border: 0; outline: none; background: transparent;
  color: var(--text); font: 13.5px/1.7 var(--mono); padding: 4px;
}
.output::placeholder { color: #8a908d; font-family: var(--sans); }

.output-foot {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  border-top: 1px solid var(--border); padding-top: 12px; margin-top: 8px; flex-wrap: wrap;
}
.detected { color: var(--muted); font-size: 13px; }
.detected b { color: var(--green); font-weight: 600; }
.foot-right { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.stats { color: var(--muted); font-size: 13px; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px);
  background: #1b1d1c; color: #fff; padding: 11px 18px; border-radius: 99px;
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .18); font-size: 14px; max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: var(--bad); }

@media (max-width: 640px) {
  .topbar { padding: 10px 16px; }
  .hero { padding-top: 36px; }
  .composer-bar .seg { width: 100%; justify-content: space-between; }
  .composer-bar .btn { width: 100%; justify-content: center; }
}