/* =====================================================================
   PHOTOMETRIC ATLAS — interface treatment.
   Restrained palette, instrument typography, hairline structure.
   ===================================================================== */

:root {
  --ink:       #0E1014;
  --ink-2:     #14171C;
  --ink-3:     #1A1E25;
  --half:      #2A2E36;
  --dust:      #7A7A72;     /* AA pass — passé de #5C5C56 à #7A7A72 (≈5:1) */
  --dust-deep: #5C5C56;     /* ancien dust, gardé pour les hairlines vraiment décoratives */
  --chalk:     #E0DCD0;
  --chalk-2:   #C8C3B5;
  --amber:     #DC9E50;
  --amber-2:   #B5803E;
  --good:      #6FC36F;
  --bad:       #C46060;
  --hair:      rgba(224, 220, 208, 0.10);
  --hair-2:    rgba(224, 220, 208, 0.20);

  --display:   "Big Shoulders", "Instrument Sans", system-ui, sans-serif;
  --sans:      "Instrument Sans", "Inter", system-ui, sans-serif;
  --mono:      "JetBrains Mono", "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --serif:     "Crimson Pro", Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body, #app { height: 100%; }

body {
  font-family: var(--sans);
  background: var(--ink);
  color: var(--chalk);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.01em;
  overflow: hidden;
  /* Subtle archival paper field — barely there. */
  background-image:
    radial-gradient(1200px 800px at 50% 35%, #15181E 0%, var(--ink) 70%);
}

/* === App grid ====================================================== */

#app {
  display: grid;
  grid-template-rows: 56px 1fr;
  height: 100vh;
  container-type: inline-size;
}

main {
  display: grid;
  grid-template-columns:
    minmax(160px, var(--col-left, 220px)) 5px
    minmax(280px, 1fr)
    5px minmax(320px, var(--col-right, 60%));
  height: calc(100vh - 56px);
  min-height: 0;
  overflow: hidden;
}

/* Layout compact (container < 1280px) : on cache l'éditeur HLSL pour
   préserver la pile d'effets et la preview (usages opérationnels). */
@container (max-width: 1280px) {
  main {
    grid-template-columns:
      minmax(180px, var(--col-left, 200px)) 5px
      0
      0 minmax(320px, 1fr);
  }
  main > #center-panel { display: none; }
  main > #split-right  { display: none; }
  main > #split-left   { background: var(--hair-2); }
  main > #right-panel  { grid-column: 5; }
}

/* Tablette / mobile : on empile verticalement. */
@container (max-width: 880px) {
  main {
    grid-template-columns: 1fr;
    grid-template-rows: 220px 1fr;
    overflow: auto;
  }
  main > #left-panel  { grid-column: 1; grid-row: 1; border-right: 0; border-bottom: 1px solid var(--hair-2); }
  main > #right-panel { grid-column: 1; grid-row: 2; }
  main > #center-panel { display: none; }
  main > #split-left   { display: none; }
  main > #split-right  { display: none; }
}

/* Header en flex-wrap pour les petites largeurs. */
@media (max-width: 720px) {
  header { padding: 0 12px; }
  .brand h1 .sub { display: none; }
  .header-cost { margin-left: 10px; padding-left: 10px; }
}

.splitter {
  background: var(--hair-2);
  cursor: col-resize;
  position: relative;
  z-index: 5;
  transition: background 120ms ease;
}
.splitter::before {
  content: "";
  position: absolute;
  inset: 0 -3px;          /* hit-zone élargie pour la souris */
}
.splitter:hover,
.splitter.dragging,
.splitter:focus-visible { background: var(--amber); }
.splitter:focus-visible { outline: 1px solid var(--amber); outline-offset: 2px; }
.fx-row:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: -1px;
  background: rgba(220, 158, 80, 0.05);
}

/* Splitter horizontal (résize vertical) */
.splitter-h {
  cursor: row-resize;
}
.splitter-h::before {
  inset: -3px 0;
}

body.is-dragging,
body.is-dragging * { cursor: col-resize !important; user-select: none; }
body.is-dragging-v,
body.is-dragging-v * { cursor: row-resize !important; user-select: none; }

/* Mode 2-col par défaut : éditeur HLSL masqué, presets + preview restent. */
body[data-mode="two-col"] main {
  grid-template-columns:
    minmax(160px, var(--col-left, 220px)) 5px
    0 0
    minmax(320px, 1fr);
}
body[data-mode="two-col"] > #app > main > #center-panel { display: none; }
body[data-mode="two-col"] > #app > main > #split-right  { display: none; }
body[data-mode="two-col"] > #app > main > #right-panel  { grid-column: 5; }

#hlsl-btn.active {
  border-color: var(--amber);
  color: var(--amber);
}

body[data-mode="zoom"] main {
  grid-template-columns: 1fr;
}
body[data-mode="zoom"] #left-panel,
body[data-mode="zoom"] #center-panel,
body[data-mode="zoom"] .splitter { display: none; }
body[data-mode="zoom"] #right-panel  { grid-column: 1; }

/* === Header ======================================================== */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 22px;
  background: var(--ink);
  border-bottom: 1px solid var(--hair-2);
  position: relative;
  min-width: 0;
  overflow: hidden;
}
.brand { min-width: 0; flex: 1; }
.brand h1 { min-width: 0; flex-wrap: wrap; }
header .actions { flex: 0 0 auto; }
header::after {
  content: "";
  position: absolute;
  left: 22px; right: 22px; bottom: -1px; height: 1px;
  background: linear-gradient(to right, transparent, var(--hair-2) 12%, var(--hair-2) 88%, transparent);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand .mark {
  display: inline-grid;
  place-items: center;
  width: 32px; height: 32px;
  border: 1px solid var(--chalk);
  font-family: var(--display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--chalk);
  background: transparent;
}
.brand .mark .mark-dot { color: var(--chalk); margin: 0 1px; font-weight: 400; }
.brand h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--chalk);
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
}
.brand h1 .slash { color: var(--chalk-2); font-weight: 400; }
.brand h1 .atlas { color: var(--chalk); }

/* === Mini coût GPU dans le header (toujours visible, même en mode zoom) === */
.header-cost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 18px;
  padding-left: 18px;
  border-left: 1px solid var(--hair-2);
  font-family: var(--mono);
}
.header-cost .hcost-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 8px currentColor;
  color: var(--good);
}
.header-cost.mid .hcost-dot { background: var(--amber); color: var(--amber); }
.header-cost.err .hcost-dot { background: var(--bad);   color: var(--bad);   }
.header-cost .hcost-val {
  font-family: var(--display);
  font-weight: 700;
  font-size: 18px;
  color: var(--chalk);
  letter-spacing: 0.02em;
}
.header-cost.mid .hcost-val { color: var(--amber); }
.header-cost.err .hcost-val { color: var(--bad); }
.header-cost .hcost-unit {
  font-size: 10px;
  color: var(--dust);
  letter-spacing: 0.10em;
  text-transform: uppercase;
}
.brand .sub {
  display: inline-block;
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid var(--hair-2);
  font-family: var(--mono);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.10em;
  color: var(--dust);
  text-transform: uppercase;
}

header .actions { display: flex; gap: 8px; }

/* === Buttons ======================================================= */

.btn, button {
  background: transparent;
  color: var(--chalk);
  border: 1px solid var(--hair-2);
  padding: 7px 14px;
  border-radius: 0;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  transition: border-color 120ms ease, color 120ms ease, background 120ms ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn:hover, button:hover {
  border-color: var(--chalk);
  color: var(--chalk);
}
.btn:focus-visible, button:focus-visible,
input:focus-visible, textarea:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 2px;
}
button:active { background: rgba(224, 220, 208, 0.04); }
.btn .kbd, button .kbd {
  font-size: 10px;
  color: var(--dust);
  letter-spacing: 0.08em;
  text-transform: lowercase;
}
button.ghost {
  border-color: transparent;
  color: var(--dust);
  padding: 5px 10px;
}
button.ghost:hover { color: var(--chalk); border-color: var(--hair-2); }

button.amber {
  border-color: var(--amber);
  color: var(--amber);
}
button.amber:hover {
  background: var(--amber);
  color: var(--ink);
}

/* === Onboarding modal ============================================= */

#onboard-modal {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 11, 0.92);
  backdrop-filter: blur(10px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
#onboard-modal[hidden] { display: none; }

.onboard-card {
  position: relative;
  width: min(820px, 100%);
  max-height: calc(100vh - 80px);
  overflow: auto;
  background: var(--ink);
  border: 1px solid var(--hair-2);
  padding: 56px 56px 36px;
  box-shadow: 0 60px 140px rgba(0, 0, 0, 0.7);
}
.onboard-close {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 14px;
  padding: 4px 10px;
}

.onboard-hero {
  text-align: left;
  margin-bottom: 36px;
}
.onboard-logo {
  display: block;
  width: 56px;
  height: 56px;
  margin-bottom: 20px;
  filter: brightness(1.1);
}
.onboard-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.onboard-eyebrow .rule {
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--amber);
}
.onboard-eyebrow span:not(.rule) {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}
.onboard-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 38px;
  letter-spacing: 0.005em;
  line-height: 1.05;
  color: var(--chalk);
  margin-bottom: 18px;
}
.onboard-title em {
  font-style: italic;
  font-family: var(--serif);
  font-weight: 400;
  color: var(--amber);
}
.onboard-pitch {
  font-size: 14px;
  line-height: 1.6;
  color: var(--chalk-2);
  max-width: 620px;
}

.onboard-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 28px;
  padding: 24px 0;
  border-top: 1px solid var(--hair-2);
  border-bottom: 1px solid var(--hair-2);
  margin-bottom: 22px;
}
.step {
  display: grid;
  grid-template-columns: 38px 1fr;
  column-gap: 12px;
  row-gap: 4px;
  align-items: start;
}
.step-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--display);
  font-weight: 700;
  font-size: 22px;
  color: var(--amber);
  letter-spacing: 0.04em;
  line-height: 1;
  padding-top: 1px;
}
.step h3 { grid-column: 2; grid-row: 1; }
.step p  { grid-column: 2; grid-row: 2; }
.step h3 {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
  margin-bottom: 6px;
}
.step p {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--chalk-2);
}
.step .kw {
  color: var(--chalk);
  font-weight: 500;
}
.step code {
  font-family: var(--mono);
  font-size: 11px;
  background: rgba(220, 158, 80, 0.08);
  border: 1px solid rgba(220, 158, 80, 0.20);
  padding: 1px 6px;
  color: var(--amber);
}

.onboard-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.onboard-skip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--dust);
  cursor: pointer;
}
.onboard-skip input { accent-color: var(--amber); cursor: pointer; }
.onboard-skip:hover { color: var(--chalk-2); }

/* === Brief AD modal =============================================== */

#brief-modal {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 11, 0.85);
  backdrop-filter: blur(6px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
#brief-modal[hidden] { display: none; }

.brief-card {
  width: min(880px, 100%);
  max-height: calc(100vh - 80px);
  background: var(--ink);
  border: 1px solid var(--hair-2);
  display: grid;
  grid-template-rows: 48px 1fr 60px;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
}

.brief-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 18px;
  border-bottom: 1px solid var(--hair-2);
}
.brief-head h2 {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--chalk);
  flex: 1;
}
.brief-head h2 .dim {
  font-weight: 400;
  color: var(--dust);
  letter-spacing: 0.10em;
  text-transform: none;
  margin-left: 6px;
}

#brief-input {
  width: 100%;
  height: 100%;
  background: var(--ink-2);
  color: var(--chalk);
  border: 0;
  resize: none;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  padding: 18px 22px;
  outline: none;
  letter-spacing: 0.01em;
}
#brief-input::placeholder { color: var(--dust); }

.brief-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 18px;
  border-top: 1px solid var(--hair-2);
}
#brief-report {
  flex: 1;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--dust);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#brief-report.ok  { color: var(--amber); }
#brief-report.err { color: #c46060; text-transform: none; letter-spacing: 0.02em; }
.brief-actions { display: flex; gap: 8px; }

/* === Panels & headers ============================================== */

#left-panel,
#center-panel,
#right-panel {
  background: var(--ink);
  min-height: 0;
}
#left-panel  { border-right: 1px solid var(--hair-2); }
#center-panel{ border-right: 1px solid var(--hair-2); display: grid; grid-template-rows: 40px 1fr 5px var(--row-params, 220px); }

.panel-head {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 40px;
  padding: 0 18px;
  border-bottom: 1px solid var(--hair-2);
}
.panel-head h2 {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--chalk);
}
.panel-head h2 .dim {
  font-weight: 400;
  color: var(--dust);
  letter-spacing: 0.10em;
  text-transform: none;
  margin-left: 4px;
}
.panel-head .rule {
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--chalk);
  flex: 0 0 auto;
}
.panel-head .ord {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--dust);
  text-transform: uppercase;
}
.panel-head .dim { color: var(--dust); font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; }

/* === Left panel (effects stack) ==================================== */

#left-panel { display: grid; grid-template-rows: 40px auto 40px 1fr auto auto; }

/* === Preset grid (styles pop-culture) ============================== */

#preset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--hair);
}
.preset-btn {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: transparent;
  border: 1px solid var(--hair-2);
  cursor: pointer;
  font-family: var(--mono);
  padding: 4px 2px;
  letter-spacing: 0.04em;
  text-transform: none;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
  min-height: 0;
}
.preset-btn:hover {
  border-color: var(--amber);
  background: rgba(220, 158, 80, 0.06);
}
.preset-btn.active {
  border-color: var(--amber);
  background: rgba(220, 158, 80, 0.12);
}
.preset-btn .pb-icon {
  font-size: 18px;
  line-height: 1;
}
.preset-btn .pb-name {
  font-size: 8.5px;
  letter-spacing: 0.04em;
  color: var(--chalk-2);
  text-align: center;
  text-transform: uppercase;
  line-height: 1;
}
.preset-btn:hover .pb-name { color: var(--chalk); }
.preset-btn.action {
  border-style: dashed;
  border-color: var(--dust);
}
.preset-btn.action:hover {
  border-style: solid;
  border-color: var(--amber);
}
.preset-btn.action .pb-name { color: var(--dust); }

.preset-btn.action.reset:hover {
  border-color: var(--bad);
  background: rgba(196, 96, 96, 0.06);
}
.preset-btn.action.reset:hover .pb-icon,
.preset-btn.action.reset:hover .pb-name { color: var(--bad); }

/* Hover popup pour les presets — réutilise la classe générale du tutoriel */
#preset-tip {
  position: fixed;
  z-index: 90;
  width: 320px;
  background: var(--ink);
  border: 1px solid var(--hair-2);
  padding: 16px 18px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.55);
  pointer-events: none;
  font-family: var(--sans);
  animation: tut-fade 180ms ease-out both;
}
#preset-tip[hidden] { display: none; }
#preset-tip .pt-arrow {
  position: absolute;
  left: -7px;
  width: 12px; height: 12px;
  background: var(--ink);
  border-left:   1px solid var(--hair-2);
  border-bottom: 1px solid var(--hair-2);
  transform: rotate(45deg);
}
#preset-tip .pt-eyebrow {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}
#preset-tip .pt-eyebrow .rule {
  display: inline-block; width: 14px; height: 1px; background: var(--amber);
}
#preset-tip .pt-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--chalk);
  margin-bottom: 8px;
  display: inline-flex; align-items: center; gap: 8px;
}
#preset-tip .pt-title .pt-icon { font-size: 22px; }
#preset-tip .pt-desc {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.5;
  color: var(--chalk-2);
  margin-bottom: 8px;
}
#preset-tip .pt-channels {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.10em;
  color: var(--dust);
  text-transform: uppercase;
  border-top: 1px solid var(--hair);
  padding-top: 8px;
  margin-top: 4px;
}

/* === Custom preset save modal ====================================== */
#custom-modal {
  position: fixed; inset: 0;
  z-index: 110;
  background: rgba(6,8,11,0.82);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 40px;
}
#custom-modal[hidden] { display: none; }
.custom-card {
  width: min(480px, 100%);
  background: var(--ink);
  border: 1px solid var(--hair-2);
  padding: 24px;
}
.custom-card h2 {
  font-family: var(--display);
  font-weight: 700; font-size: 22px;
  color: var(--chalk);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}
.custom-card p {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px; line-height: 1.5;
  color: var(--chalk-2);
  margin-bottom: 16px;
}
.custom-card input[type=text] {
  width: 100%;
  background: var(--ink-2);
  color: var(--chalk);
  border: 1px solid var(--hair-2);
  padding: 9px 12px;
  font-family: var(--mono);
  font-size: 12px;
  margin-bottom: 16px;
}
.custom-card input[type=text]:focus { border-color: var(--amber); outline: none; }
.custom-actions {
  display: flex; justify-content: space-between; gap: 8px;
}
.custom-actions .left { display: flex; gap: 6px; }

#preset-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  padding: 4px 0;
  overflow-y: auto;
  counter-reset: fx;
}

.fx-row {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 8px;
  padding: 11px 14px 11px 14px;
  border-bottom: 1px solid var(--hair);
  cursor: pointer;
  user-select: none;
  transition: background 120ms ease;
  counter-increment: fx;
}
.fx-row::before {
  content: counter(fx, decimal-leading-zero);
  position: absolute;
  right: 14px; top: 12px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--dust);
  letter-spacing: 0.10em;
}
.fx-row:hover { background: rgba(224, 220, 208, 0.025); }
.fx-row.active { background: rgba(220, 158, 80, 0.06); }
.fx-row.active::after {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--amber);
}
.fx-row:hover { background: rgba(224, 220, 208, 0.05); cursor: grab; }
.fx-row:active { cursor: grabbing; }

.fx-row.dragging {
  opacity: 0.35;
  background: rgba(220, 158, 80, 0.10);
}
.fx-row.drag-above { box-shadow: inset 0 2px 0 0 var(--amber); }
.fx-row.drag-below { box-shadow: inset 0 -2px 0 0 var(--amber); }

.fx-toggle {
  -webkit-appearance: none;
  appearance: none;
  width: 14px; height: 14px;
  border: 1px solid var(--dust);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: border-color 120ms ease;
  margin: 0 0 0 4px;
}
.fx-toggle:hover { border-color: var(--chalk); }
.fx-toggle:checked {
  border-color: var(--amber);
  background: var(--amber);
}
.fx-toggle:checked::after {
  content: "";
  position: absolute;
  left: 3px; top: 0px;
  width: 5px; height: 9px;
  border: solid var(--ink);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(40deg);
}

.fx-label-wrap {
  display: flex; flex-direction: column; gap: 2px;
  min-width: 0;
}
.fx-name {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--chalk-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.fx-row.active .fx-name { color: var(--amber); }
.fx-row .fx-toggle:checked + .fx-label-wrap .fx-name,
.fx-row:has(.fx-toggle:checked) .fx-name { color: var(--chalk); }
.fx-row.active:has(.fx-toggle:checked) .fx-name { color: var(--amber); }

.fx-tag {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dust);
}

#preset-info {
  margin: 0;
  padding: 14px 18px 16px;
  border-top: 1px solid var(--hair);
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.45;
  color: var(--chalk-2);
  min-height: 56px;
}

.signature {
  border-top: 1px solid var(--hair-2);
  padding: 12px 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.signature .sig-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--chalk);
  width: fit-content;
  transition: opacity 120ms ease;
}
.signature .sig-brand:hover { opacity: 0.85; }
.signature .sig-brand:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 3px;
}
.signature .sig-logo {
  width: 18px;
  height: 18px;
  display: block;
  filter: brightness(1.1);
}
.signature .sig-name {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--chalk);
}
.signature .sig-meta {
  display: flex;
  flex-direction: column;
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--dust);
}
.signature .sig-meta time {
  color: var(--chalk-2);
}

/* === Tutorial popup (au survol des effets) ========================= */

#fx-tutorial {
  position: fixed;
  z-index: 80;
  width: 360px;
  background: var(--ink);
  border: 1px solid var(--hair-2);
  padding: 18px 20px 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(220, 158, 80, 0.05);
  pointer-events: none;
  font-family: var(--sans);
  animation: tut-fade 180ms ease-out both;
}
#fx-tutorial[hidden] { display: none; }

@keyframes tut-fade {
  from { opacity: 0; transform: translateX(-6px); }
  to   { opacity: 1; transform: translateX(0);    }
}

#fx-tutorial .tut-arrow {
  position: absolute;
  left: -7px;
  width: 12px; height: 12px;
  background: var(--ink);
  border-left: 1px solid var(--hair-2);
  border-bottom: 1px solid var(--hair-2);
  transform: rotate(45deg);
}
#fx-tutorial .tut-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
#fx-tutorial .tut-rule {
  display: inline-block;
  width: 16px; height: 1px;
  background: var(--amber);
}
#fx-tutorial .tut-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}
#fx-tutorial .tut-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--chalk);
  line-height: 1.1;
  margin-bottom: 12px;
}
#fx-tutorial .tut-analogy {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  line-height: 1.5;
  color: var(--chalk-2);
  margin-bottom: 14px;
}
#fx-tutorial .tut-section {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 10px;
  align-items: start;
  margin-bottom: 8px;
}
#fx-tutorial .tut-section:last-child { margin-bottom: 0; }
#fx-tutorial .tut-tag {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dust);
  padding-top: 2px;
}
#fx-tutorial .tut-section p {
  font-size: 12px;
  line-height: 1.5;
  color: var(--chalk-2);
}

/* === Texture slot (brush / grain) ================================== */

.tex-slot {
  margin: 0 0 14px 0;
  padding: 12px;
  border: 1px solid var(--hair-2);
  background: rgba(220, 158, 80, 0.04);
}
.tex-slot-head {
  margin-bottom: 8px;
}
.tex-slot-title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--chalk);
}
.tex-slot-hint {
  color: var(--chalk-2) !important;
}
.tex-slot-row {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 12px;
  align-items: center;
}
.tex-slot-thumb {
  width: 56px;
  height: 56px;
  border: 1px solid var(--hair-2);
  background: #06080B;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.tex-slot-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1);
}
.tex-slot-thumb.procedural {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--dust);
  letter-spacing: 0.10em;
}
.tex-slot-meta { min-width: 0; overflow: hidden; }
.tex-slot-name {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--chalk);
  letter-spacing: 0.04em;
  white-space: nowrap; text-overflow: ellipsis; overflow: hidden;
  margin-bottom: 4px;
}
.tex-slot-hint {
  font-family: var(--serif);
  font-style: italic;
  font-size: 11px;
  color: var(--dust);
  line-height: 1.35;
}
.tex-slot-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.tex-slot-actions .btn,
.tex-slot-actions button {
  padding: 5px 10px;
  font-size: 10px;
  letter-spacing: 0.10em;
}

.param-empty {
  color: var(--dust);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 6px 0;
}

/* === Editor ========================================================= */

#editor-host {
  min-height: 0;
  overflow: hidden;
  background: var(--ink-2);
  border-top: 1px solid var(--hair);
}
#editor-host textarea {
  background: var(--ink-2) !important;
  color: var(--chalk) !important;
}

#params-host {
  display: grid;
  grid-template-rows: 40px 1fr;
  background: var(--ink);
  border-top: 1px solid var(--hair-2);
  min-height: 0;
}
#params-list {
  padding: 12px 18px 14px;
  overflow-y: auto;
}

/* parameter rows */
.param-row {
  display: grid;
  grid-template-columns: 140px 1fr 86px;
  gap: 14px;
  align-items: center;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--hair);
  font-size: 12px;
}
.param-row:last-child { border-bottom: none; }
.param-row label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--chalk-2);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.param-row input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--hair-2);
  outline: none;
  cursor: pointer;
}
.param-row input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--amber);
  border: 0;
  cursor: pointer;
  transition: transform 120ms ease;
}
.param-row input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.2); }
.param-row input[type=range]::-moz-range-thumb {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--amber);
  border: 0;
}

.param-row input[type=number] {
  background: transparent;
  color: var(--chalk);
  border: 0;
  border-bottom: 1px solid var(--hair-2);
  border-radius: 0;
  padding: 4px 6px;
  font-family: var(--mono);
  font-size: 11px;
  width: 100%;
  text-align: right;
}
.param-row input[type=number]:focus { outline: none; border-bottom-color: var(--amber); }

.param-row input[type=color] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  border: 1px solid var(--hair-2);
  border-radius: 0;
  width: 100%;
  height: 22px;
  padding: 0;
  cursor: pointer;
}
.param-row input[type=color]::-webkit-color-swatch-wrapper { padding: 0; }
.param-row input[type=color]::-webkit-color-swatch { border: 0; }

.param-row input[type=checkbox] {
  accent-color: var(--amber);
}

.param-row .vec {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 6px;
  width: 100%;
}

/* === Right panel (preview) ========================================== */

#right-panel {
  display: grid;
  grid-template-rows: 40px 1fr 72px;
  background: var(--ink);
}

#preview-toolbar { display: flex; gap: 14px; }
#preview-toolbar #preview-info {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--dust);
  letter-spacing: 0.10em;
  text-transform: uppercase;
}
#preview-toolbar .status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dust);
  padding: 4px 10px;
  border: 1px solid var(--hair-2);
}
#preview-toolbar .status .status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--dust);
  box-shadow: 0 0 6px transparent;
  transition: background 120ms ease, box-shadow 120ms ease;
}
#preview-toolbar .status.ok  { color: var(--good); border-color: rgba(111, 195, 111, 0.4); }
#preview-toolbar .status.ok  .status-dot { background: var(--good); box-shadow: 0 0 8px var(--good); }
#preview-toolbar .status.err { color: var(--bad);  border-color: rgba(196,  96,  96, 0.5); }
#preview-toolbar .status.err .status-dot { background: var(--bad);  box-shadow: 0 0 8px var(--bad); }
#preview-toolbar .status.dirty { color: var(--amber); border-color: rgba(220, 158, 80, 0.4); }
#preview-toolbar .status.dirty .status-dot { background: var(--amber); box-shadow: 0 0 8px var(--amber); }

#zoom-btn {
  font-family: var(--mono);
  font-size: 14px;
  padding: 4px 10px;
}

#snap-btn,
#rec-btn {
  padding: 5px 10px;
  font-size: 10px;
  letter-spacing: 0.10em;
}
#rec-btn .rec-time {
  font-family: var(--mono);
  font-weight: 400;
  color: var(--chalk-2);
  font-size: 9px;
  margin-left: 6px;
  letter-spacing: 0;
}
#rec-btn.recording {
  border-color: var(--bad);
  color: var(--bad);
  animation: rec-pulse 1.6s ease-in-out infinite;
}
@keyframes rec-pulse {
  0%, 100% { box-shadow: 0 0 0   0 rgba(196, 96, 96, 0.0); }
  50%      { box-shadow: 0 0 0 4px rgba(196, 96, 96, 0.15); }
}

#preview-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #06080B;
  overflow: hidden;
  min-height: 0;
  /* Faint corner crop marks — pure photometric chart energy */
  background-image:
    linear-gradient(to right, var(--hair) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hair) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: -1px -1px;
}
/* Thin frame around the stage */
#preview-stage::before,
#preview-stage::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border-color: var(--hair-2);
  border-style: solid;
  width: 20px; height: 20px;
}
#preview-stage::before {
  top: 14px; left: 14px;
  border-width: 1px 0 0 1px;
}
#preview-stage::after {
  bottom: 14px; right: 14px;
  border-width: 0 1px 1px 0;
}

#preview-canvas {
  display: block;
  background: #000;
  max-width: 100%;
  max-height: 100%;
  box-shadow: 0 0 0 1px var(--hair-2), 0 30px 80px rgba(0,0,0,0.55);
}

/* === Split A/B overlay (avant / après) =========================== */

#split-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}
#split-overlay[hidden] { display: none; }

#split-overlay .split-tag {
  position: absolute;
  top: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--chalk);
  padding: 4px 10px;
  background: rgba(14, 16, 20, 0.78);
  border: 1px solid var(--hair-2);
  backdrop-filter: blur(4px);
}
#split-overlay .split-before { left: 16px; }
#split-overlay .split-after  { right: 16px; color: var(--amber); border-color: rgba(220, 158, 80, 0.5); }

#split-overlay .split-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--chalk);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
  cursor: ew-resize;
  pointer-events: auto;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.4), 0 6px 18px rgba(0,0,0,0.4);
  transition: transform 120ms ease, border-color 120ms ease;
  user-select: none;
}
#split-overlay .split-handle:hover {
  border-color: var(--amber);
  transform: translate(-50%, -50%) scale(1.08);
}
#split-overlay .split-handle.dragging {
  border-color: var(--amber);
}
#split-overlay .split-handle .sh-arrow {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--chalk);
  line-height: 1;
}
#split-overlay .split-handle:hover .sh-arrow,
#split-overlay .split-handle.dragging .sh-arrow { color: var(--amber); }

/* État actif du bouton split dans la toolbar */
#split-btn.active {
  border-color: var(--amber);
  color: var(--amber);
}

body.is-dragging-h,
body.is-dragging-h * { cursor: ew-resize !important; user-select: none; }

/* Empty state hint — apparaît seulement quand 0 effet activé */
#empty-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  background: rgba(14, 16, 20, 0.78);
  border: 1px solid var(--hair-2);
  backdrop-filter: blur(8px);
  text-align: center;
  animation: hint-fade 280ms ease-out both;
  max-width: 520px;
}
#empty-hint[hidden] { display: none; }
@keyframes hint-fade {
  from { opacity: 0; transform: translate(-50%, 6px); }
  to   { opacity: 1; transform: translate(-50%, 0);    }
}
#empty-hint .rule {
  display: inline-block;
  width: 20px; height: 1px;
  background: var(--amber);
}
#empty-hint .hint-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}
#empty-hint p {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.4;
  color: var(--chalk-2);
  pointer-events: none;
}
#empty-hint .hint-sep {
  color: var(--dust);
  margin: 0 6px;
}
#empty-hint kbd {
  display: inline-block;
  padding: 2px 8px;
  margin: 0 2px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
  background: rgba(220, 158, 80, 0.10);
  border: 1px solid rgba(220, 158, 80, 0.30);
}

#preview-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 18px;
  border-top: 1px solid var(--hair-2);
  background: var(--ink);
}

.gpu-cost {
  flex: 1;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  column-gap: 22px;
  font-family: var(--mono);
}

/* Bloc principal — la valeur en grand display */
.gpu-cost .cost-block-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.gpu-cost .cost-label {
  font-size: 10px;
  color: var(--dust);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.gpu-cost .cost-value {
  font-family: var(--display);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: 0.01em;
  line-height: 1;
  color: var(--good);
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.gpu-cost .cost-unit {
  font-size: 11px;
  color: var(--dust);
  letter-spacing: 0.10em;
  text-transform: uppercase;
}
.gpu-cost.mid .cost-value { color: var(--amber); }
.gpu-cost.err .cost-value { color: var(--bad); }

/* Bloc barre + libellés — droite */
.gpu-cost .cost-block-bar {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.gpu-cost .cost-bar {
  position: relative;
  height: 8px;
  background: var(--half);
  overflow: hidden;
}
.gpu-cost .cost-bar::after {
  /* Marqueur de budget à 0.6 ms */
  content: "";
  position: absolute;
  left: 75%;        /* 0.6 / 0.8 = 75% */
  top: -3px; bottom: -3px;
  width: 2px;
  background: var(--chalk);
}
.gpu-cost .cost-fill {
  display: block;
  height: 100%;
  background: var(--good);
  transition: width 200ms ease, background 200ms ease;
  width: 0;
}
.gpu-cost.mid .cost-fill { background: var(--amber); }
.gpu-cost.err .cost-fill { background: var(--bad); }
.gpu-cost .cost-bar-labels {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: 10px;
  color: var(--dust);
  letter-spacing: 0.10em;
}
.gpu-cost .cost-fps {
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--chalk-2);
  text-transform: none;
  white-space: nowrap;
}
#preview-controls input[type=range] {
  flex: 1;
  -webkit-appearance: none;
  height: 1px;
  background: var(--hair-2);
}
#preview-controls input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--amber);
  border: 0;
}

/* === Misc =========================================================== */

#left-panel::-webkit-scrollbar,
#preset-list::-webkit-scrollbar,
#params-list::-webkit-scrollbar {
  width: 8px; height: 8px;
}
#left-panel::-webkit-scrollbar-thumb,
#preset-list::-webkit-scrollbar-thumb,
#params-list::-webkit-scrollbar-thumb {
  background: var(--half);
  border-radius: 0;
}