*, *::before, *::after { box-sizing: border-box; }

:root {
  /* Midnight pzzz — obsidian + champagne */
  --bg:        #0a0a0c;   /* obsidian */
  --bg-2:      #0e0e11;
  --panel:     #121214;   /* one shade up */
  --panel-2:   #17171a;
  --panel-3:   #1d1d21;
  --hairline:  #26262a;
  --hairline-2:#1c1c20;

  --ink:       #f2ece1;   /* bone white */
  --ink-2:     #d4cdc1;
  --muted:     #7a756c;
  --muted-2:   #55514a;

  --gold:      #c9a96e;   /* low-sat champagne */
  --gold-soft: rgba(201, 169, 110, 0.12);
  --gold-line: rgba(201, 169, 110, 0.32);

  /* the display stage stays light — like a gallery spotlight */
  --stage:     #f6f3ec;   /* warm ivory, on which black line art reads well */
  --stage-2:   #eeeae0;

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 18px 48px rgba(0, 0, 0, 0.5);

  --radius:    10px;
  --radius-lg: 14px;

  --serif: "Cormorant Garamond", "Noto Serif SC", "Source Han Serif SC",
           "Songti SC", Georgia, serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC",
           "Segoe UI", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  color: var(--ink);
  font-family: var(--sans);
  overscroll-behavior: none;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
}
body {
  height: 100dvh;
  background: var(--bg);
  background-image:
    radial-gradient(900px 500px at 12% -5%, rgba(201, 169, 110, 0.06), transparent 60%),
    radial-gradient(800px 500px at 110% 10%, rgba(201, 169, 110, 0.04), transparent 60%);
}

/* ---------- topbar ---------- */
.topbar {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 20px 32px;
  border-bottom: 1px solid var(--hairline);
  background: transparent;
}
.topbar h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.8px;
  color: var(--ink);
}
.topbar h1 em {
  font-style: italic;
  color: var(--gold);
  font-weight: 400;
  padding: 0 2px;
}
.topbar .sub {
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 3px;
  text-transform: uppercase;
  padding-left: 18px;
  border-left: 1px solid var(--hairline);
}

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: calc(100dvh - 65px);
  gap: 24px;
  padding: 24px 32px;
}

.sidebar {
  padding: 28px 26px;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow-y: auto;
  position: relative;
}
/* subtle gold hairline at the top of sidebar */
.sidebar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-line), transparent);
}

.panel { margin-bottom: 28px; padding-bottom: 26px; border-bottom: 1px solid var(--hairline-2); }
.panel:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.panel h2 {
  margin: 0 0 16px 0;
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.panel h2 .num {
  font-family: var(--serif);
  font-style: italic;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.5px;
}
.panel h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--hairline);
}

/* ---------- model picker ---------- */
.models {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.model-card {
  background: var(--panel-2);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 12px 4px 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  position: relative;
  overflow: hidden;
}
.model-card:hover {
  border-color: var(--muted);
  color: var(--ink-2);
  background: var(--panel-3);
}
.model-card.active {
  border-color: var(--gold);
  background: var(--panel-3);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--gold-soft);
}
.model-card.active::before {
  content: "";
  position: absolute;
  top: 6px;
  right: 6px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
}
.model-card img {
  width: 44px;
  height: 56px;
  object-fit: contain;
  opacity: 0.42;
  filter: invert(1) brightness(1.1);
  transition: all 0.2s;
}
.model-card:hover img { opacity: 0.7; }
.model-card.active img { opacity: 1; }
.model-card span {
  font-size: 10.5px;
  text-align: center;
  line-height: 1.2;
  letter-spacing: 0.3px;
}

/* ---------- upload ---------- */
.upload {
  display: block;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius);
  padding: 34px 14px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--panel-2);
  color: var(--ink-2);
}
.upload:hover, .upload.drag {
  border-color: var(--gold);
  background: var(--panel-3);
}
.upload-text { font-size: 12px; line-height: 1.7; letter-spacing: 0.3px; }
.upload-text strong {
  color: var(--gold);
  font-weight: 500;
  border-bottom: 1px solid var(--gold-line);
  padding-bottom: 2px;
}
.upload-text small { color: var(--muted); letter-spacing: 0.6px; }

/* ---------- fit chips ---------- */
.fit-row {
  display: flex;
  gap: 0;
  margin-top: 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-2);
}
.chip {
  flex: 1;
  background: transparent;
  border: none;
  border-right: 1px solid var(--hairline);
  color: var(--ink-2);
  padding: 10px 6px;
  font-size: 11.5px;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}
.chip:last-child { border-right: none; }
.chip:hover { background: var(--panel-3); color: var(--gold); }

/* ---------- sliders ---------- */
.slider {
  display: grid;
  grid-template-columns: 42px 1fr 48px;
  align-items: center;
  gap: 12px;
  font-size: 10.5px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 18px;
}
.slider input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 1px;
  background: var(--hairline);
  outline: none;
}
.slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  cursor: pointer;
  transition: transform 0.1s;
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.15);
}
.slider input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.4);
  box-shadow: 0 0 0 4px rgba(201, 169, 110, 0.25);
}
.slider input[type="range"]::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  border: none;
  cursor: pointer;
}
.slider span:last-child {
  text-align: right;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.5px;
  text-transform: none;
  font-style: italic;
}

/* ---------- buttons ---------- */
.btn {
  width: 100%;
  padding: 14px 18px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  font-size: 11.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer;
  margin-top: 10px;
  transition: all 0.25s ease;
  font-family: inherit;
}
.btn:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-soft);
}
.btn.primary {
  background: linear-gradient(180deg, #d4b578 0%, #b89a5f 100%);
  color: #0f0e0b;
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(201, 169, 110, 0.18),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
  font-weight: 600;
}
.btn.primary:hover {
  background: linear-gradient(180deg, #e0c28a 0%, #c9a96e 100%);
  color: #0a0a0c;
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(201, 169, 110, 0.28),
              inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn:disabled { opacity: 0.35; cursor: not-allowed; transform: none; box-shadow: none; }

.hint {
  display: block;
  color: var(--muted);
  font-size: 10.5px;
  margin-top: 14px;
  line-height: 1.7;
  letter-spacing: 0.3px;
  font-style: italic;
  font-family: var(--serif);
}

.export-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 16px 0 10px;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 10.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.export-divider::before,
.export-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline), transparent);
}

/* ---------- 🐷 surprise modal ---------- */
.piggy {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10, 10, 12, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.35s ease;
  padding: 24px;
}
.piggy.show { opacity: 1; }
.piggy[hidden] { display: none; }

.piggy-card {
  background: linear-gradient(180deg, #fff0f3 0%, #ffe0e8 100%);
  color: #3a1a22;
  border: 1px solid rgba(255, 180, 200, 0.6);
  border-radius: 18px;
  padding: 32px 28px 24px;
  max-width: 360px;
  width: 100%;
  text-align: center;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.4) inset;
  transform: scale(0.85) rotate(-2deg);
  transition: transform 0.45s cubic-bezier(0.2, 1.4, 0.4, 1);
  font-family: var(--serif);
}
.piggy.show .piggy-card { transform: scale(1) rotate(0deg); }

.piggy-emoji {
  font-size: 52px;
  line-height: 1;
  margin-bottom: 14px;
  animation: piggyWiggle 1.4s ease-in-out infinite;
}
@keyframes piggyWiggle {
  0%, 100% { transform: rotate(-6deg); }
  50%      { transform: rotate(6deg); }
}

.piggy-title {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 1px;
  color: #4a1a28;
}
.piggy-sub {
  margin: 0 0 20px;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #a85a70;
}

.piggy-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.piggy-btns .btn {
  flex: 1;
  background: linear-gradient(180deg, #ff8fa8 0%, #e56683 100%) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600;
  letter-spacing: 2px;
  font-size: 14px;
  padding: 12px 10px;
  box-shadow: 0 8px 20px rgba(229, 102, 131, 0.35);
}
.piggy-btns .btn:hover {
  background: linear-gradient(180deg, #ff7a98 0%, #d95578 100%) !important;
  transform: translateY(-1px);
}

.piggy-foot {
  margin: 16px 0 0;
  font-size: 11px;
  letter-spacing: 4px;
  color: #a85a70;
}

.batch-status {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--gold-line);
  background: var(--gold-soft);
  color: var(--ink);
  font-size: 11.5px;
  font-family: var(--serif);
  letter-spacing: 0.4px;
  border-radius: 4px;
  min-height: 1em;
}

/* ---------- stage / canvas ---------- */
.stage {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
}
.canvas-wrap {
  flex: 1 1 0;
  min-height: 0;
  min-width: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--stage);
  background-image:
    radial-gradient(ellipse at 50% 45%, #ffffff 0%, var(--stage) 55%, var(--stage-2) 100%);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md),
              inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}
/* gallery passepartout corners */
.canvas-wrap::before,
.canvas-wrap::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--gold-line);
  pointer-events: none;
  transition: opacity 0.3s;
  opacity: 0.7;
}
.canvas-wrap::before {
  top: 14px; left: 14px;
  border-right: none; border-bottom: none;
}
.canvas-wrap::after {
  bottom: 14px; right: 14px;
  border-left: none; border-top: none;
}
canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  cursor: grab;
  touch-action: none;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.18));
}
canvas:active { cursor: grabbing; }
.hint-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  color: #8b857a;
  font-family: var(--serif);
  font-size: 15px;
  font-style: italic;
  letter-spacing: 0.5px;
}
.hint-overlay.hidden { display: none; }

.stage-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--muted);
  font-size: 10.5px;
  padding: 0 8px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}
#modelLabel {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0.3px;
}
#modelLabel::before {
  content: "—";
  color: var(--gold);
  margin-right: 10px;
  font-style: italic;
}

/* ---------- mobile ---------- */
@media (max-width: 760px) {
  .topbar { padding: 14px 18px; gap: 10px; flex-wrap: wrap; }
  .topbar h1 { font-size: 18px; }
  .topbar .sub { font-size: 10px; width: 100%; padding-left: 0; border-left: none; }

  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(45dvh, 55dvh) 1fr;
    height: calc(100dvh - 68px);
    gap: 12px;
    padding: 12px;
  }

  .stage { order: 0; gap: 8px; }
  .sidebar { order: 1; padding: 22px; -webkit-overflow-scrolling: touch; }
  .panel { margin-bottom: 22px; padding-bottom: 20px; }

  .models {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 84px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0 4px 4px;
    margin: 0 -4px;
    scroll-snap-type: x mandatory;
  }
  .model-card { scroll-snap-align: start; }

  .upload { padding: 22px 12px; }
  .chip { padding: 11px 6px; }
  .slider { grid-template-columns: 36px 1fr 46px; margin-top: 16px; }
  .btn { padding: 14px 16px; }

  .canvas-wrap::before, .canvas-wrap::after { width: 12px; height: 12px; top: 10px; left: 10px; }
  .canvas-wrap::after { bottom: 10px; right: 10px; top: auto; left: auto; }
}

/* scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: var(--hairline); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted-2); }
::-webkit-scrollbar-track { background: transparent; }

/* selection */
::selection { background: var(--gold); color: var(--bg); }

/* ---------- access lock ---------- */
.lock {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  background-image:
    radial-gradient(1000px 600px at 50% 40%, rgba(201, 169, 110, 0.08), transparent 60%),
    radial-gradient(500px 300px at 20% 90%, rgba(201, 169, 110, 0.04), transparent 60%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: lockFade 0.35s ease;
}
.lock.hide {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}
@keyframes lockFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.lock-card {
  width: 100%;
  max-width: 420px;
  padding: 48px 42px 36px;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  position: relative;
  text-align: center;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55);
}
.lock-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 64%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.lock-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid var(--hairline-2);
  border-radius: calc(var(--radius-lg) - 4px);
  pointer-events: none;
}

.lock-brand { margin-bottom: 36px; }
.lock-mark {
  display: inline-block;
  font-family: var(--serif);
  font-style: italic;
  font-size: 40px;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 16px;
  padding: 0 8px;
  border-bottom: 1px solid var(--gold-line);
}
.lock-brand h2 {
  margin: 0 0 10px 0;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.6px;
  color: var(--ink);
}
.lock-brand h2 em {
  font-style: italic;
  color: var(--gold);
  font-weight: 400;
  padding: 0 2px;
}
.lock-sub {
  margin: 0;
  font-size: 10.5px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--muted);
}

.lock-form { display: flex; flex-direction: column; gap: 14px; position: relative; }
.lock-label {
  font-size: 10.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
#lockInput {
  width: 100%;
  padding: 14px 16px;
  background: var(--panel-2);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  text-align: center;
  letter-spacing: 8px;
  outline: none;
  transition: all 0.2s;
}
#lockInput::placeholder { color: var(--muted-2); letter-spacing: 6px; }
#lockInput:focus {
  border-color: var(--gold);
  background: var(--panel-3);
  box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.1);
}
.lock-form .btn { margin-top: 6px; }

.lock-error {
  min-height: 18px;
  color: #d6886a;
  font-family: var(--serif);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.3px;
  margin-top: 2px;
}

.lock.shake .lock-card { animation: lockShake 0.4s ease; }
@keyframes lockShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

.lock-foot {
  margin-top: 32px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 10.5px;
  letter-spacing: 1.5px;
  color: var(--muted-2);
}

@media (max-width: 500px) {
  .lock-card { padding: 40px 28px 30px; }
  .lock-mark { font-size: 34px; }
  .lock-brand h2 { font-size: 18px; }
  #lockInput { font-size: 20px; padding: 12px 14px; }
}