/* Shoot in Low Light — exposure recipe + brightness/noise comparison */

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

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

.guide-shoot-in-low-light-page .ref-section {
  padding: var(--space-16) 0;
}

.lowlight-guide__canvas-wrap {
  min-width: 0;
}

.lowlight-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);
}

.lowlight-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);
}

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

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

.lowlight-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);
}

.lowlight-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;
}

.lowlight-guide__status-val--accent {
  color: #4338ca;
}

.lowlight-guide__recipe {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

.lowlight-guide__recipe-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-align: center;
}

.lowlight-guide__recipe-key {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-gray-500);
}

.lowlight-guide__recipe-val {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
  line-height: 1.1;
}

.lowlight-guide__meters {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}

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

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

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

.lowlight-guide__meter-val {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-gray-600);
}

.lowlight-guide__meter-track {
  height: 8px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.lowlight-guide__meter-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.35s ease;
}

.lowlight-guide__meter-fill--bright {
  background: linear-gradient(90deg, #6366f1, #818cf8);
}

.lowlight-guide__meter-fill--noise {
  background: linear-gradient(90deg, #78716c, #a8a29e);
}

.lowlight-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);
}

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

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

.lowlight-guide__frame-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lowlight-guide__frame-tag {
  font-size: 10px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-gray-500);
}

.lowlight-guide__frame-speed {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.lowlight-guide__frame-scene {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
}

.lowlight-guide__scene {
  --ll-bright: 0.5;
  --ll-noise: 0.2;
  position: absolute;
  inset: 0;
  transition: filter 0.35s ease;
}

.lowlight-guide__scene::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: calc(1 - var(--ll-bright) * 0.85);
  background: #0f172a;
  transition: opacity 0.35s ease;
  z-index: 1;
}

.lowlight-guide__scene::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: var(--ll-noise);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 120px 120px;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 3;
}

.lowlight-guide__scene--indoor {
  background: linear-gradient(160deg, #fef3c7 0%, #d97706 55%, #451a03 100%);
}

.lowlight-guide__scene--restaurant {
  background: linear-gradient(160deg, #fecaca 0%, #7c2d12 50%, #1c1917 100%);
}

.lowlight-guide__scene--event {
  background: linear-gradient(160deg, #c4b5fd 0%, #6d28d9 45%, #0f172a 100%);
}

.lowlight-guide__scene--bluehour {
  background: linear-gradient(160deg, #93c5fd 0%, #3730a3 50%, #0f172a 100%);
}

.lowlight-guide__scene--street {
  background: linear-gradient(160deg, #f472b6 0%, #0891b2 40%, #0f172a 100%);
}

.lowlight-guide__stage {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

/* Portrait silhouette: head + shoulders */
.lowlight-guide__figure {
  position: absolute;
  left: 50%;
  bottom: 14%;
  transform: translateX(-50%);
  width: 34%;
  height: 46%;
}

.lowlight-guide__figure::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 44%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: #171412;
  box-shadow:
    -2px 0 0 rgba(255, 236, 210, 0.22),
    0 0 12px rgba(0, 0, 0, 0.35);
}

.lowlight-guide__figure::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 92%;
  height: 40%;
  border-radius: 46% 46% 10% 10%;
  background: #171412;
  box-shadow: -3px 0 0 rgba(255, 236, 210, 0.14);
}

/* Warm light pool on table / ground */
.lowlight-guide__pool {
  position: absolute;
  left: 50%;
  bottom: 6%;
  transform: translateX(-50%);
  width: 56%;
  height: 14%;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(255, 200, 120, 0.45) 0%, rgba(255, 160, 60, 0.12) 55%, transparent 72%);
  filter: blur(2px);
}

/* Scene-specific accent (window, candle, skyline, etc.) */
.lowlight-guide__accent {
  position: absolute;
  pointer-events: none;
}

.lowlight-guide__scene--indoor .lowlight-guide__accent {
  top: 10%;
  left: 8%;
  width: 38%;
  height: 42%;
  border: 2px solid rgba(255, 245, 220, 0.35);
  border-radius: 2px;
  background: linear-gradient(145deg, rgba(255, 248, 225, 0.28) 0%, rgba(255, 220, 160, 0.08) 100%);
  box-shadow: 0 0 24px rgba(255, 235, 190, 0.25);
}

.lowlight-guide__scene--restaurant .lowlight-guide__accent {
  bottom: 24%;
  right: 22%;
  width: 10px;
  height: 18px;
  border-radius: 50% 50% 20% 20%;
  background: linear-gradient(180deg, #fef08a 0%, #f97316 55%, #7c2d12 100%);
  box-shadow:
    0 0 10px rgba(251, 191, 36, 0.85),
    0 0 28px rgba(249, 115, 22, 0.45);
}

.lowlight-guide__scene--restaurant .lowlight-guide__accent::after {
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 8px;
  border-radius: 50% 50% 40% 40%;
  background: #fde68a;
  filter: blur(1px);
}

.lowlight-guide__scene--event .lowlight-guide__accent {
  top: 0;
  left: 30%;
  width: 40%;
  height: 72%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22) 0%, rgba(196, 181, 253, 0.08) 45%, transparent 100%);
  clip-path: polygon(35% 0, 65% 0, 100% 100%, 0 100%);
}

.lowlight-guide__scene--bluehour .lowlight-guide__accent {
  bottom: 0;
  left: 0;
  right: 0;
  height: 28%;
  background:
    linear-gradient(to top, rgba(15, 23, 42, 0.92) 0%, transparent 100%),
    repeating-linear-gradient(
      90deg,
      rgba(15, 23, 42, 0.95) 0,
      rgba(15, 23, 42, 0.95) 8%,
      transparent 8%,
      transparent 11%,
      rgba(15, 23, 42, 0.88) 11%,
      rgba(15, 23, 42, 0.88) 14%,
      transparent 14%,
      transparent 17%
    );
}

.lowlight-guide__scene--street .lowlight-guide__accent {
  top: 16%;
  right: 14%;
  width: 6px;
  height: 58%;
  border-radius: 3px;
  background: linear-gradient(180deg, #f472b6 0%, #06b6d4 100%);
  box-shadow:
    -14px 0 0 rgba(244, 114, 182, 0.55),
    14px 0 0 rgba(6, 182, 212, 0.45),
    0 0 18px rgba(244, 114, 182, 0.35);
}

.lowlight-guide__panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.lowlight-guide__toggles {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

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

.lowlight-guide__toggle-btn {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.lowlight-guide__toggle-btn:hover:not(:disabled) {
  color: var(--color-gray-900);
}

.lowlight-guide__toggle-btn.is-active {
  background: var(--color-white);
  color: var(--color-gray-900);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

.lowlight-guide__toggle-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

.lowlight-guide__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.lowlight-guide__btn:hover {
  border-color: var(--color-gray-300);
}

.lowlight-guide__btn.is-active {
  border-color: #6366f1;
  box-shadow: 0 0 0 1px #6366f1;
}

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

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

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

.lowlight-guide__btn-iso {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: #4338ca;
}

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

.lowlight-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);
}

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

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

.lowlight-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);
}

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

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

  .lowlight-guide__recipe-val {
    font-size: var(--text-lg);
  }
}

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

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

body.night-vision .lowlight-guide__status-key,
body.night-vision .lowlight-guide__recipe-key,
body.night-vision .lowlight-guide__meter-label,
body.night-vision .lowlight-guide__compare-label,
body.night-vision .lowlight-guide__frame-tag {
  color: var(--nv-text-muted);
}

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

body.night-vision .lowlight-guide__status-val--accent,
body.night-vision .lowlight-guide__btn-iso {
  color: var(--nv-accent);
}

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

body.night-vision .lowlight-guide__frame-scene {
  border-color: var(--nv-border);
}

body.night-vision .lowlight-guide__toggle-row {
  background: var(--nv-bg-elevated);
}

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

body.night-vision .lowlight-guide__toggle-btn.is-active {
  background: var(--nv-bg-card);
  color: var(--nv-text);
}

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

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

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

body.night-vision .lowlight-guide__btn.is-active {
  border-color: var(--nv-accent);
  box-shadow: 0 0 0 1px var(--nv-accent);
}

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

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

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

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