/* =============================================================================
   UPIQAL · Analyzer (index.html)
   ========================================================================== */

main { position: relative; z-index: 1; }

/* -- Hero ------------------------------------------------------------------ */

.hero {
  padding: clamp(48px, 9vw, 96px) 0 var(--sp-9);
  text-align: center;
}
.hero__eyebrow { margin-bottom: var(--sp-4); }
.hero__title {
  font-size: clamp(var(--text-2xl), 6.5vw, var(--text-4xl));
  line-height: 1.05;
  max-width: 18ch;
  margin: 0 auto var(--sp-5);
}
.hero__title .accent {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lede {
  max-width: 58ch;
  margin: 0 auto;
  color: var(--text-1);
  font-size: clamp(var(--text-base), 2.2vw, var(--text-md));
  line-height: var(--leading-prose);
}
.hero__meta {
  margin-top: var(--sp-6);
  display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center;
}

/* -- Step header ----------------------------------------------------------- */

.step-header {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: var(--sp-6);
}
.step-header__title { font-size: var(--text-xl); }
.step-header__hint { color: var(--text-2); font-size: var(--text-sm); }

/* -- Analyzer grid --------------------------------------------------------- */

.analyzer {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 960px) {
  .analyzer { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}

/* -- Drop zone ------------------------------------------------------------- */

.drop {
  position: relative;
  min-height: 260px;
  border-radius: var(--r-xl);
  border: 1.5px dashed var(--hairline-strong);
  background: var(--surface-1);
  transition: border-color var(--dur-med) var(--ease-out-quint),
              background var(--dur-med) var(--ease-out-quint),
              box-shadow var(--dur-med) var(--ease-out-quint);
  overflow: hidden;
}
.drop:hover { border-color: var(--accent-ring); background: var(--surface-2); }
.drop.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 6px rgba(99,102,241,0.08);
}

.drop__label {
  position: absolute; top: 14px; left: 18px; right: 18px;
  display: flex; align-items: center; justify-content: space-between;
  z-index: 2; pointer-events: none;
}
.drop__label .eyebrow { color: var(--text-1); }

.drop__input {
  position: absolute; inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 1;
}

.drop__empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; color: var(--text-2); pointer-events: none;
  padding: 56px 24px 24px;
  text-align: center;
}
.drop__empty svg { width: 32px; height: 32px; color: var(--text-2); }
.drop__empty strong { color: var(--text-0); font-weight: 600; }
.drop__empty em { color: var(--accent); font-style: normal; border-bottom: 1px dashed var(--accent-ring); }
.drop__hint { font-size: var(--text-xs); color: var(--text-3); letter-spacing: 0.04em; text-transform: uppercase; }

.drop__preview {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-0);
  padding: 48px 18px 18px;
}
.drop__preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--r-md);
  box-shadow: var(--elev-2);
}

.drop__remove {
  position: absolute; top: 12px; right: 12px; z-index: 3;
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-full);
  background: color-mix(in oklab, var(--surface-0) 85%, transparent);
  backdrop-filter: blur(10px);
  color: var(--text-0);
  border: 1px solid var(--hairline-strong);
  transition: all var(--dur-fast) var(--ease-out-quint);
}
.drop__remove:hover { background: var(--danger); color: #fff; border-color: var(--danger); }
.drop__remove svg { width: 14px; height: 14px; }

/* -- Raw options panel ----------------------------------------------------- */

.raw-options {
  margin-top: var(--sp-6);
  padding: var(--sp-6);
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
}
.raw-options__grid {
  display: grid; gap: var(--sp-4);
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  margin-top: var(--sp-4);
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
}
.field__input, .field__select {
  width: 100%;
  background: var(--surface-0);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  color: var(--text-0);
  padding: 10px 14px;
  font-family: inherit;
  font-size: var(--text-sm);
  transition: border-color var(--dur-fast) var(--ease-out-quint),
              box-shadow var(--dur-fast) var(--ease-out-quint);
}
.field__input:focus, .field__select:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

/* -- Run controls ---------------------------------------------------------- */

.run-bar {
  margin-top: var(--sp-9);
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: var(--sp-4);
}
.run-bar__group { display: inline-flex; align-items: center; gap: 10px; }
.run-bar__group .field__label { margin: 0; }
.run-bar__group .field__select { width: auto; min-width: 160px; }
.field__checkbox {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 500; cursor: pointer; user-select: none;
  margin: 0;
}
.field__checkbox input[type="checkbox"] {
  width: 16px; height: 16px; accent-color: var(--c-brand, #7A3731);
  cursor: pointer;
}

/* Spinner */
.spinner {
  width: 16px; height: 16px;
  color: currentColor;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* -- Results section ------------------------------------------------------- */

.results {
  margin-top: var(--sp-12);
  display: grid; gap: var(--sp-6);
}
.results.is-hidden { display: none; }

.results__summary {
  display: grid; gap: var(--sp-6);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 960px) {
  .results__summary { grid-template-columns: minmax(260px, 340px) minmax(0, 1fr) minmax(260px, 340px); }
}

/* Score card with circular ring gauge */
.score-card {
  padding: var(--sp-7);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--sp-5); text-align: center;
  background: radial-gradient(120% 80% at 50% 0%, rgba(99,102,241,0.08) 0%, var(--surface-1) 55%);
}
.score-ring { position: relative; width: 200px; height: 200px; }
.score-ring svg { transform: rotate(-90deg); }
.score-ring__track { fill: none; stroke: var(--hairline-strong); }
.score-ring__bar   { fill: none; stroke: url(#ringGrad); stroke-linecap: round; transition: stroke-dashoffset 1.1s var(--ease-out-quint); }
.score-ring__value {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-weight: 700;
  font-size: 40px; letter-spacing: -0.04em;
  color: var(--text-0);
}
.score-ring__value small { font-family: var(--font-sans); font-size: 11px; letter-spacing: 0.16em; color: var(--text-2); text-transform: uppercase; margin-bottom: 4px; font-weight: 600; }

.score-label {
  padding: 6px 14px;
  border-radius: var(--r-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  color: var(--text-1);
}

/* Key findings */
.findings {
  padding: var(--sp-7);
  display: flex; flex-direction: column; gap: var(--sp-6);
}
.findings__block p.eyebrow { margin-bottom: 10px; }
.findings__value { font-size: var(--text-xl); font-weight: 700; color: var(--text-0); letter-spacing: -0.02em; }
.findings__value--big { font-size: var(--text-3xl); font-family: var(--font-mono); font-weight: 700; letter-spacing: -0.04em; }
.findings__value--big sup { font-family: var(--font-sans); font-size: var(--text-base); color: var(--text-2); font-weight: 500; }

/* Severity bars */
.severity { padding: var(--sp-7); }
.severity__rows { display: flex; flex-direction: column; gap: var(--sp-4); margin-top: var(--sp-5); }
.severity__row { display: grid; gap: 6px; }
.severity__head {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: var(--text-xs);
}
.severity__name { color: var(--text-0); font-weight: 500; }
.severity__num  { color: var(--text-2); font-family: var(--font-mono); font-weight: 600; }
.severity__track {
  height: 6px;
  background: var(--surface-2);
  border-radius: var(--r-full);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.severity__fill {
  height: 100%;
  border-radius: var(--r-full);
  background: var(--gradient-brand);
  transform-origin: left center;
  transform: scaleX(0);
}

/* Workspace: gallery + viewer */
.workspace {
  display: grid; gap: var(--sp-6);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 960px) {
  .workspace { grid-template-columns: 280px minmax(0, 1fr); }
}

.gallery { padding: var(--sp-5); }
.gallery__grid {
  display: grid; gap: 10px;
  grid-template-columns: repeat(2, 1fr);
  margin-top: var(--sp-4);
}
@media (min-width: 960px) { .gallery__grid { grid-template-columns: 1fr; } }

.thumb {
  position: relative;
  padding: 8px;
  background: var(--surface-2);
  border: 1.5px solid transparent;
  border-radius: var(--r-md);
  transition: all var(--dur-fast) var(--ease-out-quint);
  cursor: pointer;
}
.thumb:hover { background: var(--surface-3); transform: translateY(-1px); }
.thumb.is-active { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); background: var(--surface-3); }
.thumb img { width: 100%; border-radius: 8px; aspect-ratio: 1 / 1; object-fit: cover; }
.thumb__label {
  margin-top: 8px;
  font-size: 11px;
  text-align: center;
  color: var(--text-1);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.thumb__dl {
  position: absolute; top: 14px; right: 14px;
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-full);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  color: #fff;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-out-quint);
}
.thumb:hover .thumb__dl { opacity: 1; }
.thumb__dl svg { width: 14px; height: 14px; }

/* Viewer */
.viewer { padding: var(--sp-6); display: flex; flex-direction: column; gap: var(--sp-5); }
.viewer__head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.viewer__title { font-size: var(--text-lg); font-weight: 700; }
.viewer__frame {
  position: relative;
  border-radius: var(--r-lg);
  background: var(--surface-0);
  border: 1px solid var(--hairline);
  overflow: hidden;
  min-height: 420px; height: 520px;
}
.viewer__frame canvas { cursor: grab; width: 100%; height: 100%; display: block; }
.viewer__frame canvas.is-grabbing { cursor: grabbing; }
.viewer__badge {
  position: absolute; top: 12px; right: 12px;
  padding: 5px 10px; border-radius: var(--r-full);
  background: rgba(0,0,0,0.65); backdrop-filter: blur(6px);
  color: #fff; font-family: var(--font-mono); font-size: 11px;
  border: 1px solid rgba(255,255,255,0.1);
  opacity: 0; transition: opacity 200ms ease;
}
.viewer__badge.is-visible { opacity: 1; }
.viewer__hint {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
}
.viewer__hint > div {
  padding: 8px 14px;
  border-radius: var(--r-full);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  color: #e4e4e7; font-size: 11px;
  border: 1px solid rgba(255,255,255,0.08);
}

.viewer__slider {
  display: flex; align-items: center; gap: 14px;
}
.viewer__slider label { color: var(--text-2); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; }
.viewer__slider input[type=range] {
  flex: 1;
  -webkit-appearance: none; appearance: none;
  height: 4px; border-radius: var(--r-full);
  background: linear-gradient(to right, var(--accent) 0%, var(--accent) var(--val, 100%), var(--hairline-strong) var(--val, 100%), var(--hairline-strong) 100%);
}
.viewer__slider input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--surface-0);
  box-shadow: var(--elev-2);
  transition: transform var(--dur-fast) var(--ease-out-quint);
  cursor: pointer;
}
.viewer__slider input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.15); }
.viewer__slider input[type=range]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--surface-0);
  cursor: pointer; box-shadow: var(--elev-2);
}
.viewer__slider .val { width: 40px; text-align: right; font-family: var(--font-mono); font-size: 11px; font-weight: 600; color: var(--text-0); }

/* Side-by-side originals */
.pair {
  display: grid; gap: var(--sp-6);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 640px) { .pair { grid-template-columns: repeat(2, 1fr); } }
.pair .card { padding: var(--sp-5); }
.pair img { width: 100%; border-radius: var(--r-md); }

/* Error banner */
.error-banner {
  padding: var(--sp-5);
  border-radius: var(--r-lg);
  background: color-mix(in oklab, var(--danger) 12%, var(--surface-0));
  border: 1px solid color-mix(in oklab, var(--danger) 30%, var(--hairline));
  color: color-mix(in oklab, var(--danger) 80%, var(--text-0));
  font-size: var(--text-sm);
}
.is-hidden { display: none !important; }

/* Empty-state for the results section when nothing has been analyzed yet */
.empty-state {
  padding: var(--sp-9);
  text-align: center;
  border: 1px dashed var(--hairline-strong);
  border-radius: var(--r-xl);
  color: var(--text-2);
  background:
    radial-gradient(70% 50% at 50% 0%, var(--accent-soft) 0%, transparent 70%),
    var(--surface-1);
}
.empty-state__icon {
  width: 48px; height: 48px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--r-lg);
  background: var(--surface-2); color: var(--accent);
  margin-bottom: var(--sp-4);
}
.empty-state__icon svg { width: 24px; height: 24px; }