/* ============================================================================
   UI Lab — harness layout + survey styles
   `.uil-*` rules (the survey) are self-contained so they can be lifted into
   another page along with survey.js + config.js.
   ========================================================================== */

:root {
  --bg:        #0e0e10;
  --panel:     #18181b;
  --panel-2:   #1f1f23;
  --line:      #2a2a30;
  --ink:       #f4f4f5;
  --ink-dim:   #a1a1aa;
  --ink-faint: #71717a;
  --accent:    #c8763c;   /* HexClad copper */
  --accent-soft: rgba(200, 118, 60, 0.16);
  --ok:        #4caf6f;
  --err:       #f06a5a;
  --rail-w:    264px;
  --side-w:    384px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: "Poppins", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.uil-app {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr var(--side-w);
  height: 100vh;
}

/* --- left rail ----------------------------------------------------------- */
.uil-rail {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 26px;
  overflow-y: auto;
}
.uil-brand { display: flex; align-items: center; gap: 10px; }
.uil-brand-mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--accent); color: #11110f;
  display: grid; place-items: center;
  font-weight: 700; font-size: 15px; letter-spacing: -0.5px;
}
.uil-brand-name { font-weight: 600; font-size: 15px; letter-spacing: 0.5px; }

.uil-rail-h {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.4px;
  color: var(--ink-faint); margin: 0 0 12px;
}
.uil-rail-steps { margin: 0; padding-left: 18px; color: var(--ink-dim); font-size: 13px; line-height: 1.9; }

.uil-switcher { display: flex; flex-direction: column; gap: 8px; }
.uil-switch-btn {
  text-align: left;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--ink-dim);
  padding: 11px 14px; border-radius: 9px;
  font: inherit; font-size: 14px; cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
}
.uil-switch-btn:hover { color: var(--ink); border-color: #3a3a42; }
.uil-switch-btn.is-active {
  color: var(--ink); border-color: var(--accent);
  background: var(--accent-soft);
}
.uil-switch-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: currentColor; margin-right: 9px; opacity: .55;
}
.uil-switch-btn.is-active .uil-switch-dot { background: var(--accent); opacity: 1; }

/* --- center stage -------------------------------------------------------- */
.uil-stage {
  position: relative;
  display: flex; align-items: stretch; justify-content: center;
  background:
    radial-gradient(120% 80% at 50% 0%, #1a1a1e 0%, var(--bg) 70%);
  overflow: hidden;
}
.uil-frame {
  border: 0; width: 100%; height: 100%;
  background: transparent;
}
.uil-stage-tag {
  position: absolute; top: 16px; left: 50%; transform: translateX(-50%);
  font-size: 11px; letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--ink-faint);
  background: rgba(0,0,0,.4); padding: 5px 12px; border-radius: 99px;
  border: 1px solid var(--line); pointer-events: none;
}

/* --- right sidebar (survey) --------------------------------------------- */
.uil-side {
  background: var(--panel);
  border-left: 1px solid var(--line);
  overflow-y: auto;
}

/* ====== survey (portable: .uil-survey and descendants) ================== */
.uil-survey { padding: 24px 22px 40px; }

.uil-intro {
  position: sticky; top: 0; z-index: 2;
  background: var(--panel);
  padding-bottom: 16px; margin: -24px -22px 18px; padding: 22px 22px 16px;
  border-bottom: 1px solid var(--line);
}
.uil-intro-title { font-size: 16px; margin: 0 0 8px; line-height: 1.35; }
.uil-intro-body  { font-size: 13px; color: var(--ink-dim); margin: 0; line-height: 1.55; }
.uil-steps { margin: 12px 0 0; padding-left: 18px; color: var(--ink-faint); font-size: 12px; line-height: 1.7; }

.uil-section {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.3px;
  color: var(--accent); margin: 26px 0 4px;
}
.uil-q { margin: 16px 0; }
.uil-label { display: block; font-size: 13.5px; color: var(--ink); margin-bottom: 9px; line-height: 1.45; }

.uil-options { display: flex; flex-wrap: wrap; gap: 8px; }
.uil-option {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--panel-2); border: 1px solid var(--line);
  padding: 7px 12px; border-radius: 8px; cursor: pointer;
  font-size: 13px; color: var(--ink-dim);
  transition: border-color .15s, color .15s;
}
.uil-option:hover { color: var(--ink); border-color: #3a3a42; }
.uil-option input { accent-color: var(--accent); margin: 0; }
.uil-option:has(input:checked) { color: var(--ink); border-color: var(--accent); background: var(--accent-soft); }

.uil-textarea, .uil-input {
  width: 100%; background: var(--panel-2); border: 1px solid var(--line);
  color: var(--ink); border-radius: 9px; padding: 10px 12px;
  font: inherit; font-size: 13px; resize: vertical;
}
.uil-textarea:focus, .uil-input:focus { outline: none; border-color: var(--accent); }
.uil-contact { display: flex; flex-direction: column; gap: 8px; }

.uil-error { color: var(--err); font-size: 12px; margin-top: 6px; min-height: 0; }

.uil-hp-wrap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.uil-status { font-size: 12.5px; margin: 14px 0 0; min-height: 1em; }
.uil-status-err { color: var(--err); }

.uil-submit {
  width: 100%; margin-top: 16px;
  background: var(--accent); color: #14110d; border: 0;
  padding: 13px; border-radius: 10px;
  font: inherit; font-weight: 600; font-size: 14px; cursor: pointer;
  transition: filter .15s;
}
.uil-submit:hover { filter: brightness(1.07); }
.uil-submit:disabled { opacity: .6; cursor: default; }

.uil-thanks { text-align: center; padding: 60px 18px; }
.uil-thanks-mark {
  width: 52px; height: 52px; border-radius: 50%; margin: 0 auto 18px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-size: 26px;
}
.uil-thanks h2 { font-size: 18px; margin: 0 0 8px; }
.uil-thanks p  { font-size: 13px; color: var(--ink-dim); margin: 0; line-height: 1.55; }

/* --- responsive: stack on narrow screens -------------------------------- */
@media (max-width: 1040px) {
  .uil-app { grid-template-columns: 1fr; grid-template-rows: auto 70vh auto; height: auto; min-height: 100vh; }
  .uil-rail { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 18px; }
  .uil-rail > * { flex: 0 0 auto; }
  .uil-switcher { flex-direction: row; flex-wrap: wrap; }
  .uil-side, .uil-rail { border: 0; border-bottom: 1px solid var(--line); }
  .uil-intro { position: static; margin: -24px -22px 18px; }
}