/* RapidQR — Generator UI
   Direction: technical-utility. bg off-white, near-black ink, one accent (vivid orange-red).
   Heading: Space Grotesk. Body: IBM Plex Sans. Sharp-ish radius (6px), tight heading leading. */

:root {
  --rqr-bg: #F5F5F2;
  --rqr-surface: #FFFFFF;
  --rqr-ink: #15171A;
  --rqr-ink-soft: #55585E;
  --rqr-accent: #FF4820;
  --rqr-accent-ink: #FFFFFF;
  --rqr-border: #E4E3DD;
  --rqr-radius: 6px;
}

.rqr-wrap {
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  color: var(--rqr-ink);
  background: var(--rqr-bg);
  padding: 48px 24px;
  border-radius: 12px;
  max-width: 760px;
  margin: 0 auto;
}

.rqr-wrap h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.05;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.rqr-sub {
  color: var(--rqr-ink-soft);
  font-size: 16px;
  line-height: 1.5;
  margin: 0 0 32px;
  max-width: 52ch;
}

.rqr-tabs {
  display: flex;
  gap: 4px;
  background: var(--rqr-border);
  padding: 4px;
  border-radius: var(--rqr-radius);
  margin-bottom: 28px;
  width: fit-content;
}

.rqr-tab {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--rqr-ink-soft);
  border-radius: 4px;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}

.rqr-tab.is-active {
  background: var(--rqr-surface);
  color: var(--rqr-ink);
}

.rqr-panel { display: none; }
.rqr-panel.is-active { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 32px; align-items: start; }

@media (max-width: 640px) {
  .rqr-panel.is-active { grid-template-columns: 1fr; }
}

.rqr-field { margin-bottom: 16px; }

.rqr-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--rqr-ink);
  margin-bottom: 6px;
}

.rqr-field input[type=text],
.rqr-field input[type=url],
.rqr-field input[type=email] {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--rqr-ink);
  background: var(--rqr-surface);
  border: 1px solid var(--rqr-border);
  border-radius: var(--rqr-radius);
}

.rqr-field input:focus {
  outline: none;
  border-color: var(--rqr-accent);
  box-shadow: 0 0 0 3px rgba(255,72,32,0.14);
}

.rqr-btn {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 15px;
  padding: 13px 22px;
  border: none;
  border-radius: var(--rqr-radius);
  background: var(--rqr-accent);
  color: var(--rqr-accent-ink);
  cursor: pointer;
  transition: transform .1s ease, opacity .15s ease;
}

.rqr-btn:hover { opacity: .92; }
.rqr-btn:active { transform: translateY(1px); }
.rqr-btn:disabled { opacity: .5; cursor: not-allowed; }

.rqr-btn-secondary {
  background: transparent;
  color: var(--rqr-ink);
  border: 1px solid var(--rqr-border);
}

.rqr-preview {
  background: var(--rqr-surface);
  border: 1px solid var(--rqr-border);
  border-radius: var(--rqr-radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  min-height: 260px;
  justify-content: center;
}

.rqr-preview-empty {
  color: var(--rqr-ink-soft);
  font-size: 14px;
  text-align: center;
  max-width: 22ch;
}

.rqr-preview canvas { border-radius: 4px; }

.rqr-actions { display: flex; gap: 10px; width: 100%; }
.rqr-actions .rqr-btn { flex: 1; }

.rqr-badge {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(255,72,32,0.1);
  color: var(--rqr-accent);
  margin-bottom: 12px;
}

.rqr-note {
  font-size: 13px;
  color: var(--rqr-ink-soft);
  line-height: 1.5;
  margin-top: 4px;
}

.rqr-error {
  font-size: 13px;
  color: #C7401F;
  margin-top: 6px;
  display: none;
}

.rqr-error.is-visible { display: block; }

.rqr-dynamic-locked {
  border: 1px dashed var(--rqr-border);
  border-radius: var(--rqr-radius);
  padding: 20px;
  color: var(--rqr-ink-soft);
  font-size: 14px;
  line-height: 1.6;
}