/* ── Provider & interactive tokens ───────────────────────────── */
:root {
  --chatgpt:    #10a37f;
  --claude:     #c8845a;
  --gemini:     #4285f4;
  --copilot:    #7b6fcc;
  --perplexity: #17b0a7;
  --lechat:     #f06830;
  --grok:       #aaaaaa;
  --deepseek:   #4d6bfe;

  --red-soft:  rgba(176,70,70,.08);
  --red:       #b04646;
}

@media (prefers-color-scheme: light) {
  :root {
    --red:       #903030;
    --red-soft:  rgba(144,48,48,.07);
  }
}

/* ── Skip link ───────────────────────────────────────────────── */
.skip {
  position: absolute; top: -100%; left: 16px;
  background: var(--gold); color: var(--bg);
  font-size: var(--text-sm); padding: 8px 16px;
  border-radius: 0 0 var(--r) var(--r);
  text-decoration: none; z-index: 999; transition: top .15s;
}
.skip:focus { top: 0; outline: none; }

/* ── Section labels ──────────────────────────────────────────── */
.lbl {
  display: block;
  font-size: var(--text-xs); letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--text-2);
  font-weight: 500; margin-bottom: 12px;
}

/* ── Textarea ────────────────────────────────────────────────── */
.prompt-wrap { position: relative; }
textarea {
  display: block; width: 100%; min-height: 210px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); color: var(--text);
  font-family: inherit; font-size: var(--text-base);
  line-height: 1.75; padding: 20px 20px 50px;
  resize: vertical; outline: none; caret-color: var(--gold);
  transition: border-color .18s, box-shadow .18s;
}
textarea::placeholder { color: var(--text-3); font-style: italic; }
textarea:hover { border-color: var(--border-2); }
textarea:focus { border-color: var(--gold-dim); box-shadow: 0 0 0 3px var(--gold-glow); }

.prompt-meta {
  position: absolute; bottom: 15px; left: 20px; right: 20px;
  display: flex; justify-content: space-between; align-items: center;
  pointer-events: none;
}
.char-count {
  font-size: var(--text-xs); color: var(--text-3);
  font-variant-numeric: tabular-nums; transition: color .2s;
}
.char-count.warn { color: #c97a40; }

/* ── Provider cards ──────────────────────────────────────────── */
.providers {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.p-btn {
  width: 100%; display: flex; flex-direction: column;
  align-items: flex-start; gap: 10px; padding: 14px 14px 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); color: var(--text);
  font-family: inherit; cursor: pointer;
  transition: border-color .12s, background .12s, transform .12s, box-shadow .12s;
  text-align: left; position: relative; overflow: hidden;
}
.p-btn:hover {
  background: var(--surface-2); border-color: var(--border-2);
  transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.18);
}
.p-btn:active { transform: translateY(0); box-shadow: none; }
.p-dot {
  width: 28px; height: 4px; border-radius: 2px;
  background: var(--pc, var(--border)); opacity: .65;
  transition: opacity .12s, width .12s;
}
.p-btn:hover .p-dot { opacity: 1; width: 36px; }
.p-name { font-size: var(--text-sm); letter-spacing: 0; line-height: 1; }
.p-arrow {
  position: absolute; top: 12px; right: 12px;
  font-size: 11px; color: var(--text-3); line-height: 1;
  transition: transform .12s, color .12s;
}
.p-btn:hover .p-arrow { transform: translate(2px,-2px); color: var(--text-2); }

.pc-chatgpt    { --pc: var(--chatgpt); }
.pc-claude     { --pc: var(--claude); }
.pc-gemini     { --pc: var(--gemini); }
.pc-copilot    { --pc: var(--copilot); }
.pc-perplexity { --pc: var(--perplexity); }
.pc-lechat     { --pc: var(--lechat); }
.pc-grok       { --pc: var(--grok); }
.pc-deepseek   { --pc: var(--deepseek); }

/* ── Actions row ─────────────────────────────────────────────── */
.actions { display: flex; gap: 8px; }

.btn {
  padding: 14px 20px; background: none;
  border: 1px solid var(--border); border-radius: var(--r);
  color: var(--text-2); font-family: inherit;
  font-size: var(--text-sm); letter-spacing: 0.04em;
  cursor: pointer; line-height: 1; white-space: nowrap;
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  transition: border-color .12s, color .12s;
}
.btn:hover { border-color: var(--border-2); color: var(--text); }
.btn.flex-1 { flex: 1; }
.btn.copied { border-color: var(--gold-dim); color: var(--gold); }

/* ── Toast ───────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(64px);
  background: var(--surface-2); border: 1px solid var(--border-2);
  border-radius: var(--r); padding: 11px 20px;
  font-size: var(--text-sm); letter-spacing: 0; color: var(--text);
  box-shadow: 0 8px 32px rgba(0,0,0,.3);
  transition: transform .26s cubic-bezier(.34,1.56,.64,1);
  z-index: 200; white-space: nowrap; pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; }
  .toast { transition: none !important; }
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 580px) {
  .providers { grid-template-columns: repeat(2, 1fr); }
  main.page { gap: 36px; }
  .actions { flex-wrap: wrap; }
  .actions .btn.flex-1 { flex: 0 0 100%; }
}