:root {
  color-scheme: dark;
  --panel-bg: rgba(16, 16, 18, 0.92);
  --panel-border: rgba(255, 255, 255, 0.12);
  --stage-bg: #121212;
  --text-color: #f2f2f2;
  --glow-color: #b31217;
  --lighting-color: #6e6e73;
  --glow-strength: 52;
  --lighting-intensity: 0.62;
  --font-size: 84px;
  --texture-opacity: 0.22;
  --stage-scale: 1;
  --toolbar-offset-top: 0px;
  --toolbar-offset-left: 0px;
  --toolbar-offset-right: 0px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at top, rgba(179, 18, 23, 0.28), transparent 30%),
    radial-gradient(circle at bottom right, rgba(88, 88, 92, 0.22), transparent 34%),
    #050505;
  color: #f5f7fb;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  padding: 28px;
}

.toolbar,
.preview-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  background: var(--panel-bg);
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.toolbar {
  position: absolute;
  top: 28px;
  bottom: 28px;
  z-index: 3;
  display: flex;
  gap: 0;
  width: clamp(280px, 30vw, 420px);
  transition: transform 220ms ease, width 220ms ease;
}

.toolbar-left {
  left: 28px;
}

.toolbar-right {
  right: 28px;
  flex-direction: row-reverse;
}

.toolbar-content {
  width: calc(100% - 60px);
  min-width: 0;
  height: 100%;
  overflow: auto;
  display: grid;
  gap: 14px;
  padding: 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
  scrollbar-width: none;
}

.toolbar-content::-webkit-scrollbar {
  display: none;
}

.toolbar-left .toolbar-content {
  border-left: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.toolbar-handle {
  width: 60px;
  min-width: 60px;
  padding: 20px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-radius: 0;
  color: #f5f7fb;
  background: linear-gradient(180deg, rgba(179, 18, 23, 0.32), rgba(58, 58, 60, 0.18));
  box-shadow: none;
}

.toolbar-left .toolbar-handle {
  border-radius: 28px 0 0 28px;
}

.toolbar-right .toolbar-handle {
  border-radius: 0 28px 28px 0;
}

.toolbar-handle:hover {
  transform: none;
}

.toolbar-handle-title,
.toolbar-handle-icon {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.76rem;
}

.toolbar-handle-icon {
  color: rgba(245, 247, 251, 0.62);
}

.toolbar:not(.is-expanded) {
  width: 60px;
}

.toolbar:not(.is-expanded) .toolbar-content {
  opacity: 0;
  pointer-events: none;
}

.toolbar:not(.is-expanded).toolbar-left {
  transform: translateX(calc(-100% + 60px));
}

.toolbar:not(.is-expanded).toolbar-right {
  transform: translateX(calc(100% - 60px));
}

.compact-grid {
  grid-template-columns: 1fr;
}

.preview-shell {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 18px;
  min-height: calc(100vh - 56px);
  padding: 24px;
  margin-top: var(--toolbar-offset-top);
  margin-left: var(--toolbar-offset-left);
  margin-right: var(--toolbar-offset-right);
  transition: margin 220ms ease;
}

.panel-copy h1,
.stage-meta h2 {
  margin: 0;
  font-family: "Sora", sans-serif;
}

.panel-copy h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.1;
}

.intro,
.summary {
  margin: 10px 0 0;
  color: rgba(245, 247, 251, 0.72);
  line-height: 1.55;
}

.eyebrow {
  margin: 0 0 6px;
  color: #d64045;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.control-group {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.025);
}

.split-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.control-row {
  display: grid;
  gap: 8px;
}

.control-row label,
.list-header span {
  font-size: 0.88rem;
  color: rgba(245, 247, 251, 0.72);
}

input[type="text"],
select {
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  padding: 0 14px;
  background: rgba(10, 10, 11, 0.92);
  color: #f5f7fb;
}

input[type="range"] {
  width: 100%;
  accent-color: #c1121f;
}

input[type="color"] {
  width: 100%;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 14px;
  padding: 4px;
  background: rgba(10, 10, 11, 0.92);
}

.button-row,
.list-header {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  color: #f8f8f8;
  background: linear-gradient(135deg, #d90429, #7f1d1d);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease;
  box-shadow: 0 14px 30px rgba(127, 29, 29, 0.34);
}

button:hover {
  transform: translateY(-1px);
}

button.secondary {
  color: #f5f7fb;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

button.danger {
  color: #ffd6d2;
}

.layer-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.layer-chip {
  width: 100%;
  justify-content: flex-start;
  background: rgba(255, 255, 255, 0.05);
  color: #f5f7fb;
  box-shadow: none;
}

.layer-chip.active {
  background: rgba(179, 18, 23, 0.18);
  outline: 1px solid rgba(217, 4, 41, 0.5);
}

.zoom-header {
  align-items: baseline;
}

.zoom-value {
  color: #f5f7fb;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.zoom-actions button {
  flex: 1;
}

.sign-stage {
  position: relative;
  min-height: 620px;
  overflow: hidden;
  border-radius: 30px;
  background: var(--stage-bg);
  isolation: isolate;
}

.stage-viewport {
  position: absolute;
  inset: 0;
  transform: scale(var(--stage-scale));
  transform-origin: center center;
  transition: transform 180ms ease;
}

.stage-frame,
.light-pass,
.sign-stage::before,
.sign-stage::after {
  position: absolute;
  inset: 0;
  content: "";
}

.stage-frame {
  inset: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 22px;
  pointer-events: none;
}

.sign-stage::before {
  opacity: var(--texture-opacity);
  mix-blend-mode: screen;
}

.sign-stage::after {
  background: radial-gradient(circle at center, transparent 45%, rgba(0, 0, 0, 0.55) 100%);
  pointer-events: none;
}

.light-pass {
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: var(--lighting-intensity);
}

.light-pass-a {
  background: radial-gradient(circle at top, color-mix(in srgb, var(--lighting-color) 78%, transparent), transparent 55%);
}

.light-pass-b {
  background: radial-gradient(circle at bottom right, color-mix(in srgb, var(--lighting-color) 62%, transparent), transparent 42%);
}

.sign-text-stack {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  gap: 14px;
  min-height: 100%;
  padding: 60px 48px;
  text-align: center;
}

.sign-text {
  max-width: 100%;
  font-family: "Sora", sans-serif;
  font-size: var(--font-size);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 0.04em;
  color: var(--text-color);
  text-wrap: balance;
  text-shadow:
    0 0 calc(var(--glow-strength) * 0.3px) color-mix(in srgb, var(--glow-color) 100%, transparent),
    0 0 calc(var(--glow-strength) * 0.7px) color-mix(in srgb, var(--glow-color) 78%, transparent),
    0 0 calc(var(--glow-strength) * 1.4px) color-mix(in srgb, var(--glow-color) 52%, transparent);
  animation: rise-in 500ms ease both;
}

.sign-text.subtle {
  opacity: 0.72;
  font-size: calc(var(--font-size) * 0.52);
  letter-spacing: 0.16em;
}

.texture-grid::before {
  background:
    linear-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 42px 42px;
}

.texture-brushed::before {
  background:
    repeating-linear-gradient(100deg, rgba(255, 255, 255, 0.08) 0 2px, transparent 2px 6px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), transparent 40%);
}

.texture-grain::before {
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px),
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px),
    radial-gradient(circle at 40% 70%, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px);
  background-size: 18px 18px;
}

.texture-velvet::before {
  background:
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.18), transparent 25%),
    radial-gradient(circle at 80% 25%, rgba(255, 255, 255, 0.14), transparent 32%),
    radial-gradient(circle at 50% 78%, rgba(255, 255, 255, 0.12), transparent 24%);
}

.light-halo .light-pass-a {
  transform: scale(1.2);
}

.light-spotlight .light-pass-a {
  background: radial-gradient(circle at 50% 18%, color-mix(in srgb, var(--lighting-color) 92%, transparent), transparent 38%);
}

.light-spotlight .light-pass-b {
  background: radial-gradient(circle at 50% 85%, rgba(255, 255, 255, 0.12), transparent 32%);
}

.light-neon .light-pass-a {
  background: linear-gradient(180deg, color-mix(in srgb, var(--lighting-color) 62%, transparent), transparent 26%);
}

.light-neon .light-pass-b {
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--lighting-color) 42%, transparent), transparent);
}

.light-sunset .light-pass-a {
  background: radial-gradient(circle at 20% 15%, rgba(255, 173, 110, 0.9), transparent 35%);
}

.light-sunset .light-pass-b {
  background: radial-gradient(circle at 78% 80%, rgba(255, 114, 74, 0.85), transparent 36%);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 760px) {
  .app-shell {
    padding-top: 16px;
  }

  .preview-shell {
    margin-top: var(--toolbar-offset-top);
    margin-left: 0;
    margin-right: 0;
  }

  .sign-stage {
    min-height: 460px;
  }

  .toolbar {
    top: 16px;
    bottom: auto;
    left: 16px;
    right: 16px;
    width: auto;
    max-height: min(70vh, 760px);
  }

  .toolbar-right,
  .toolbar-left {
    flex-direction: column;
  }

  .toolbar-content,
  .toolbar-left .toolbar-content {
    width: 100%;
    border-right: 0;
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .toolbar-handle,
  .toolbar-left .toolbar-handle,
  .toolbar-right .toolbar-handle {
    width: 100%;
    min-width: 0;
    flex-direction: row;
    border-radius: 28px 28px 0 0;
  }

  .toolbar-handle-title,
  .toolbar-handle-icon {
    writing-mode: initial;
    transform: none;
  }

  .toolbar:not(.is-expanded) {
    width: auto;
    transform: translateY(calc(-100% + 64px));
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 16px;
  }

  .preview-shell {
    margin-top: var(--toolbar-offset-top);
    margin-left: 0;
    margin-right: 0;
  }

  .toolbar,
  .preview-shell {
    border-radius: 22px;
  }

  .toolbar-content,
  .preview-shell {
    padding: 18px;
  }

  .split-grid {
    grid-template-columns: 1fr;
  }

  .button-row,
  .list-header {
    flex-direction: column;
    align-items: stretch;
  }

  .zoom-header {
    align-items: stretch;
  }

  .sign-text-stack {
    padding: 40px 24px;
  }
}