/* Freeze Motion — speed ladder + motion-streak comparison */

.freeze-guide {
  --freeze-shutter: #f59e0b;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: var(--space-6);
  align-items: stretch;
}

@media (max-width: 900px) {
  .freeze-guide {
    grid-template-columns: 1fr;
  }
}

.guide-freeze-motion-page .ref-section {
  padding: var(--space-16) 0;
}

/* Canvas — light panel (matches reciprocal-calc / guide tools) */
.freeze-guide__canvas-wrap {
  min-width: 0;
}

.freeze-guide__canvas {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  min-height: 420px;
  padding: var(--space-5);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
}

.freeze-guide__status {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

.freeze-guide__status-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.freeze-guide__status-block:last-child {
  text-align: right;
}

.freeze-guide__status-key {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-gray-500);
}

.freeze-guide__status-val {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
  line-height: 1.3;
}

.freeze-guide__status-val--accent {
  color: #15803d;
}

/* Shutter speed ladder */
.freeze-guide__ladder {
  padding: var(--space-5);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

.freeze-guide__ladder-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.freeze-guide__ladder-title {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-gray-500);
}

.freeze-guide__ladder-dir {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-gray-600);
}

.freeze-guide__ladder-rail {
  position: relative;
  padding-top: 52px;
  padding-bottom: var(--space-2);
}

/* Callout badges sit above the track — no overlap with scale */
.freeze-guide__ladder-callouts {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 44px;
  pointer-events: none;
}

.freeze-guide__ladder-callout {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 64px;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  transition: left 0.35s ease;
}

.freeze-guide__ladder-callout-key {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1;
}

.freeze-guide__ladder-callout-val {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
}

.freeze-guide__ladder-callout--slow {
  background: #fef3c7;
  border: 1px solid #fde68a;
}

.freeze-guide__ladder-callout--slow .freeze-guide__ladder-callout-key {
  color: #92400e;
}

.freeze-guide__ladder-callout--slow .freeze-guide__ladder-callout-val {
  color: #78350f;
}

.freeze-guide__ladder-callout--min {
  background: #dcfce7;
  border: 1px solid #bbf7d0;
}

.freeze-guide__ladder-callout--min .freeze-guide__ladder-callout-key {
  color: #166534;
}

.freeze-guide__ladder-callout--min .freeze-guide__ladder-callout-val {
  color: #14532d;
}

.freeze-guide__ladder-track-wrap {
  position: relative;
  height: 28px;
}

.freeze-guide__ladder-track {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 12px;
  transform: translateY(-50%);
  border-radius: var(--radius-full);
  background: var(--color-gray-200);
  overflow: hidden;
}

.freeze-guide__ladder-fill {
  position: absolute;
  top: 0;
  height: 100%;
  border-radius: var(--radius-full);
  transition: left 0.35s ease, width 0.35s ease;
}

.freeze-guide__ladder-fill--blur {
  left: 0;
  background: linear-gradient(90deg, #fca5a5 0%, #fde68a 100%);
}

.freeze-guide__ladder-fill--sharp {
  background: linear-gradient(90deg, #86efac 0%, #4ade80 100%);
}

.freeze-guide__ladder-pin {
  position: absolute;
  top: 50%;
  width: 3px;
  height: 20px;
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: left 0.35s ease;
  z-index: 2;
}

.freeze-guide__ladder-pin--slow {
  background: #d97706;
}

.freeze-guide__ladder-pin--min {
  width: 4px;
  height: 24px;
  background: var(--color-gray-900);
}

.freeze-guide__ladder-scale {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-gray-100);
}

.freeze-guide__ladder-scale-end {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-500);
  flex-shrink: 0;
}

.freeze-guide__ladder-scale-mid {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  text-align: center;
  line-height: 1.4;
}

.freeze-guide__ladder-caption {
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-600);
  text-align: center;
}

/* Comparison strip */
.freeze-guide__compare-label {
  margin: 0;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-gray-500);
  text-align: center;
}

.freeze-guide__frames {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.freeze-guide__frame {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

.freeze-guide__frame-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.freeze-guide__frame-speed {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
}

.freeze-guide__frame-tag {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.freeze-guide__frame-tag--blur {
  color: #b91c1c;
  background: #fee2e2;
}

.freeze-guide__frame-tag--min {
  color: #15803d;
  background: #dcfce7;
}

.freeze-guide__frame-tag--safe {
  color: var(--color-gray-700);
  background: var(--color-gray-100);
}

/* Motion ball + streak (same language as shutter-speed demo) */
.freeze-guide__frame-scene {
  position: relative;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(180deg, #e0e7ff 0%, #c7d2fe 100%);
}

.freeze-guide__motion {
  position: absolute;
  top: 50%;
  left: 55%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
}

.freeze-guide__trail {
  position: absolute;
  top: 50%;
  right: 22px;
  transform: translateY(-50%);
  height: 44px;
  width: var(--trail-w, 0);
  opacity: var(--trail-o, 0);
  background: linear-gradient(to left, var(--freeze-shutter) 0%, rgba(245, 158, 11, 0.35) 55%, transparent 100%);
  border-radius: 22px 0 0 22px;
  filter: blur(var(--trail-blur, 0));
  transition: width 0.4s ease, opacity 0.4s ease, filter 0.4s ease;
  pointer-events: none;
}

.freeze-guide__ball {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--freeze-shutter);
  box-shadow: 0 2px 10px rgba(245, 158, 11, 0.35);
  filter: blur(var(--subject-blur, 0));
  transition: filter 0.4s ease;
}

.freeze-guide__frame-scene--blur {
  --trail-w: 80px;
  --trail-o: 0.9;
  --trail-blur: 1px;
  --subject-blur: 0.4px;
}

.freeze-guide__frame-scene--sharp {
  --trail-w: 0;
  --trail-o: 0;
  --trail-blur: 0;
  --subject-blur: 0;
}

.freeze-guide__frame-scene--min {
  box-shadow: inset 0 0 0 2px #86efac;
}

/* Panel */
.freeze-guide__panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.freeze-guide__dir {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-1);
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
}

.freeze-guide__dir-btn {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-family: inherit;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base);
}

.freeze-guide__dir-btn:hover {
  color: var(--color-gray-900);
}

.freeze-guide__dir-btn.is-active {
  color: var(--color-gray-900);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.freeze-guide__btns {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.freeze-guide__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.freeze-guide__btn:hover {
  border-color: var(--color-gray-300);
  box-shadow: var(--shadow-sm);
}

.freeze-guide__btn.is-active {
  border-color: var(--color-black);
  box-shadow: var(--shadow-md);
}

.freeze-guide__btn-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.freeze-guide__btn-label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
}

.freeze-guide__btn-hint {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  line-height: 1.35;
}

.freeze-guide__btn-speed {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.freeze-guide__readout {
  padding: var(--space-4);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

.freeze-guide__readout-eyebrow {
  margin: 0 0 var(--space-1);
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-gray-500);
}

.freeze-guide__readout-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-black);
}

.freeze-guide__readout-text {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-600);
}

.freeze-guide__readout-tip {
  margin: 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-gray-200);
  font-size: var(--text-xs);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-500);
}

.freeze-guide__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (max-width: 480px) {
  .freeze-guide__frames {
    grid-template-columns: 1fr;
  }

  .freeze-guide__ladder-callout {
    min-width: 56px;
    padding: 4px 6px;
  }

  .freeze-guide__ladder-callout-val {
    font-size: var(--text-xs);
  }
}

/* Night vision */
body.night-vision .freeze-guide__canvas {
  background: var(--nv-bg-elevated);
  border-color: var(--nv-border);
}

body.night-vision .freeze-guide__status,
body.night-vision .freeze-guide__ladder {
  background: var(--nv-bg-card);
  border-color: var(--nv-border);
}

body.night-vision .freeze-guide__status-key,
body.night-vision .freeze-guide__ladder-title,
body.night-vision .freeze-guide__compare-label {
  color: var(--nv-text-muted);
}

body.night-vision .freeze-guide__status-val,
body.night-vision .freeze-guide__frame-speed {
  color: var(--nv-text);
}

body.night-vision .freeze-guide__status-val--accent {
  color: var(--nv-accent);
}

body.night-vision .freeze-guide__ladder-dir,
body.night-vision .freeze-guide__ladder-scale-end,
body.night-vision .freeze-guide__ladder-scale-mid,
body.night-vision .freeze-guide__ladder-caption {
  color: var(--nv-text-muted);
}

body.night-vision .freeze-guide__ladder-track {
  background: var(--nv-border);
}

body.night-vision .freeze-guide__ladder-pin--min {
  background: var(--nv-accent);
}

body.night-vision .freeze-guide__ladder-scale {
  border-color: var(--nv-border);
}

body.night-vision .freeze-guide__frame-scene {
  background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
  border-color: var(--nv-border);
}

body.night-vision .freeze-guide__dir {
  background: var(--nv-bg-elevated);
}

body.night-vision .freeze-guide__dir-btn {
  color: var(--nv-text-muted);
}

body.night-vision .freeze-guide__dir-btn:hover,
body.night-vision .freeze-guide__dir-btn.is-active {
  color: var(--nv-text);
  background: var(--nv-bg-card);
}

body.night-vision .freeze-guide__btn {
  background: var(--nv-bg-card);
  border-color: var(--nv-border);
}

body.night-vision .freeze-guide__btn.is-active {
  border-color: var(--nv-accent);
}

body.night-vision .freeze-guide__btn-label {
  color: var(--nv-text);
}

body.night-vision .freeze-guide__btn-hint,
body.night-vision .freeze-guide__btn-speed {
  color: var(--nv-text-muted);
}

body.night-vision .freeze-guide__readout {
  background: var(--nv-bg-elevated);
  border-color: var(--nv-border);
}

body.night-vision .freeze-guide__readout-eyebrow,
body.night-vision .freeze-guide__readout-tip {
  color: var(--nv-text-muted);
}

body.night-vision .freeze-guide__readout-title {
  color: var(--nv-text);
}

body.night-vision .freeze-guide__readout-text {
  color: var(--nv-text-muted);
}

body.night-vision .freeze-guide__readout-tip {
  border-color: var(--nv-border);
}