:root {
  --bg0: #05060a;
  --bg1: #070a14;
  --ink: #e8f7f0;
  --accent: #ffd21a;
  --accent-soft: rgba(255, 210, 26, 0.14);
  --panel: rgba(8, 10, 18, 0.84);
  --border: rgba(255, 210, 26, 0.32);
  --muted: #97a5b3;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.65);
  --canvas-bg: #090d19;
  --crop: #ffd21a;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(255, 210, 26, 0.08), transparent 28%),
    linear-gradient(180deg, var(--bg1) 0%, var(--bg0) 100%);
  color: var(--ink);
  font: 400 14px/1.45 "Courier New", Courier, monospace;
}

.app-shell {
  max-width: 1480px;
  margin: 0 auto;
  padding: 22px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 22px;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 11px;
  margin-bottom: 6px;
}

.topbar h1,
.panel h2 {
  margin: 0;
  font: inherit;
  font-size: 22px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topbar p {
  margin: 8px 0 0;
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(320px, 420px);
  gap: 22px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.preview-panel {
  padding: 18px;
}

.controls-panel {
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.canvas-wrap {
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.03) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.03) 75%),
    linear-gradient(45deg, rgba(255, 255, 255, 0.03) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.03) 75%),
    var(--canvas-bg);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  border: 1px solid rgba(255, 210, 26, 0.18);
  padding: 14px;
  overflow: auto;
  cursor: crosshair;
}

#previewCanvas {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  background: #03050a;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.status-line,
.export-meta {
  margin-top: 14px;
  color: var(--muted);
  min-height: 1.4em;
}

.control-group {
  border-top: 1px solid rgba(255, 210, 26, 0.18);
  padding-top: 14px;
}

.control-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.meta-grid,
.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 14px;
}

.meta-grid {
  grid-template-columns: 80px minmax(0, 1fr);
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.button-row button {
  flex: 1 1 140px;
}

label {
  display: block;
  color: var(--ink);
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  color: var(--ink);
  background: rgba(5, 10, 20, 0.88);
  border: 1px solid rgba(255, 210, 26, 0.22);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 210, 26, 0.08);
}

button {
  border: 1px solid rgba(255, 210, 26, 0.28);
  padding: 11px 16px;
  background: rgba(255, 210, 26, 0.08);
  color: var(--ink);
  cursor: pointer;
  transition: background 120ms ease, transform 120ms ease, border-color 120ms ease;
}

button:hover {
  background: rgba(255, 210, 26, 0.16);
  border-color: rgba(255, 210, 26, 0.48);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.primary-button,
.file-button span {
  background: var(--accent);
  color: #05060a;
  border-color: var(--accent);
}

.primary-button:hover,
.file-button:hover span {
  background: #ffe16a;
  border-color: #ffe16a;
}

.secondary-button {
  background: rgba(255, 210, 26, 0.06);
  color: var(--ink);
}

.file-button {
  position: relative;
  display: inline-flex;
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-button span {
  display: inline-flex;
  align-items: center;
  padding: 12px 18px;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
  }
}