/* RLHF Arena — стили главного меню среды (форма запуска серии).
   Тёмная, минималистичная тема. Арена (webapp_borrow/) НЕ зависит от этого файла. */

:root {
  --bg: #0b0c0f;
  --surface: #121419;
  --surface-2: #181b22;
  --surface-3: #20242d;
  --border: #272c35;
  --border-soft: #1c2027;
  --border-strong: #353b46;
  --text: #e7e9ee;
  --text-dim: #9aa0ac;
  --text-faint: #626773;
  --accent: #f5921e;
  --accent-strong: #ff9d2f;
  --accent-soft: rgba(245, 146, 30, 0.10);
  --accent-line: rgba(245, 146, 30, 0.45);
  --error: #f0616d;
  --error-soft: rgba(240, 97, 109, 0.10);
  --success: #4cb782;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(245, 146, 30, 0.06), transparent 60%),
    var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

/* ------------------------------------------------------------------ layout */
.rlhf-container {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(20px, 5vw, 40px) 16px 56px;
}

.rlhf-header { text-align: center; margin-bottom: clamp(20px, 5vw, 32px); }
.rlhf-header h1 {
  margin: 0;
  font-size: clamp(1.45rem, 5vw, 1.95rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text);
}
.rlhf-subtitle { margin: 8px 0 0; color: var(--text-dim); font-size: 0.9rem; }

.rlhf-env-badge { margin-top: 12px; font-size: 0.78rem; color: var(--text-faint); }
.rlhf-env-badge .env-tag {
  display: inline-block;
  background: var(--surface-3);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px 10px;
  font-weight: 600;
}

/* ------------------------------------------------------------------ card */
.rlhf-form {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: clamp(18px, 4vw, 28px);
  box-shadow: var(--shadow);
}
.rlhf-form h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.rlhf-form .rlhf-form-sub { margin: 0 0 22px; color: var(--text-faint); font-size: 0.82rem; }

/* ---------------------------------------------- sections (бывшие fieldset) */
.rlhf-form fieldset {
  border: 0;
  border-top: 1px solid var(--border-soft);
  padding: 18px 0 4px;
  margin: 0 0 8px;
}
.rlhf-form fieldset:first-of-type { border-top: 0; padding-top: 4px; }
.rlhf-form legend {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  margin-bottom: 14px;
  color: var(--text);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.rlhf-form legend::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: 0 0 auto;
}

/* -------------------------------------------------------------- fields */
.rlhf-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.rlhf-field:last-child { margin-bottom: 0; }
.rlhf-label {
  color: var(--text-dim);
  font-size: 0.84rem;
  font-weight: 500;
}

.rlhf-form input,
.rlhf-form select,
.rlhf-form textarea,
.rlhf-input {
  width: 100%;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font: inherit;
  font-size: 0.95rem;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}
.rlhf-form textarea { font-family: ui-monospace, 'SF Mono', Menlo, monospace; resize: vertical; }
.rlhf-form input::placeholder,
.rlhf-form textarea::placeholder { color: var(--text-faint); }
.rlhf-form input:focus,
.rlhf-form select:focus,
.rlhf-form textarea:focus,
.rlhf-input:focus {
  outline: none;
  border-color: var(--accent-line);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--surface-3);
}
.rlhf-form select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%239aa0ac' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
  cursor: pointer;
}

/* краткая 2-колоночная сетка для параметров серии */
.rlhf-params-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: 12px;
}
.rlhf-params-grid .rlhf-field { margin-bottom: 0; }

/* ----------------------------------------------------------- deck source */
.p1-deck-options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }
.p1-deck-opt,
.p1-imported-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.p1-deck-opt:hover,
.p1-imported-opt:hover { border-color: var(--border-strong); }
.p1-deck-opt:has(input:checked),
.p1-imported-opt:has(input:checked) {
  border-color: var(--accent-line);
  background: var(--accent-soft);
}
.p1-deck-opt input[type="radio"],
.p1-imported-opt input[type="radio"] {
  width: 16px; height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
  flex: 0 0 auto;
}
.p1-deck-opt,
.p1-imported-opt label { flex: 1 1 auto; cursor: pointer; font-size: 0.92rem; }
.p1-imported-opt.unplayable { opacity: 0.5; }
.p1-imported-opt .badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 20px;
  background: var(--surface-3);
  color: var(--text-dim);
  white-space: nowrap;
}
.p1-imported-opt .badge.primary { background: var(--accent-soft); color: var(--accent-strong); }
.p1-imported-opt .badge.unplayable { background: var(--error-soft); color: var(--error); }
.p1-imported-opt .preview-toggle {
  font-size: 0.78rem;
  color: var(--accent);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

/* ---------------------------------------------------------- login block */
.rlhf-login {
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 14px;
}
.rlhf-login h3 { margin: 0 0 12px; font-size: 0.86rem; font-weight: 650; color: var(--text); }
.rlhf-login-row { display: flex; gap: 8px; margin: 6px 0; flex-wrap: wrap; }
.rlhf-login-row input {
  flex: 1 1 170px;
  min-width: 120px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 11px;
  font: inherit;
  font-size: 0.92rem;
}
.rlhf-login-row input:focus { outline: none; border-color: var(--accent-line); box-shadow: 0 0 0 3px var(--accent-soft); }
#rlhf-user-info { font-size: 0.82rem; margin: 8px 0; color: var(--success); }

/* ------------------------------------------------------------- buttons */
.rlhf-btn-primary {
  width: 100%;
  background: var(--accent);
  color: #1b1308;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 20px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  margin-top: 18px;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
}
.rlhf-btn-primary:hover { background: var(--accent-strong); box-shadow: 0 6px 18px rgba(245, 146, 30, 0.22); }
.rlhf-btn-primary:active { transform: translateY(1px); }
.rlhf-btn-primary:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }

.rlhf-login-row button,
.btn-sample-deck {
  background: var(--surface-3);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.rlhf-login-row button:hover,
.btn-sample-deck:hover { border-color: var(--accent-line); color: var(--accent-strong); }
.rlhf-login-row button:disabled { opacity: 0.5; cursor: default; }

/* --------------------------------------------------------- misc / hints */
.rlhf-hint {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin: 10px 0 0;
  line-height: 1.5;
}
.rlhf-hint code {
  background: var(--surface-3);
  color: var(--text-dim);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.76rem;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
}
#rlhf-login-msg { margin-top: 10px; }

.rlhf-error {
  color: var(--error);
  background: var(--error-soft);
  border: 1px solid var(--error);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
  font-size: 0.9rem;
}

.custom-deck-block { margin-top: 10px; }
.custom-deck-block .btn-sample-deck { margin: 8px 0; }
.sample-deck-out {
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 10px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.8rem;
  color: var(--text-dim);
  overflow-x: auto;
  margin: 0;
}

.rlhf-checkbox { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.rlhf-checkbox input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); cursor: pointer; }
.rlhf-audio-opts { display: flex; flex-wrap: wrap; gap: 10px 24px; }

/* --------------------------------------------------------------- footer */
.rlhf-footer-link { text-align: center; margin-top: 22px; }
.rlhf-footer-link a {
  display: inline-block;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.88rem;
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  padding: 8px 18px;
  transition: color 0.15s, border-color 0.15s;
}
.rlhf-footer-link a:hover { color: var(--accent-strong); border-color: var(--accent-line); }

/* ------------------------------------------------------ /groups browse */
.rlhf-banner {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  margin: 16px 0;
  color: var(--text-dim);
}
.rlhf-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.rlhf-table th, .rlhf-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.9rem;
}
.rlhf-table th { background: var(--surface-2); color: var(--text-dim); font-weight: 600; }
.rlhf-table a { color: var(--accent-strong); text-decoration: none; }
.rlhf-table a:hover { text-decoration: underline; }

/* ------------------------------------------------- reduced motion / a11y */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}