:root {
  --bg: #202227;
  --panel: #2d2d2d;
  --panel2: #323232;
  --line: #707070;
  --text: #ffffff;
  --muted: #a0a0a0;
  --accent: #7aa2ff;
  --accent-text: #0b1020;
  --flash: #89f0f2;
  --screen: #25262b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Open Sans", system-ui, sans-serif;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 400;
}

.app {
  width: min(760px, calc(100% - 28px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.brand {
  text-align: center;
  margin-bottom: 36px;
}

.logo {
  width: 120px;
  height: 120px;
  display: block;
  margin: 0 auto 16px;
}

h1 {
  margin: 0;
  font-size: 2.25rem;
  font-weight: 700;
}

.lede {
  margin: 10px auto 0;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.drops {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}

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

h2 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
}

.meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.linkish {
  appearance: none;
  border: 0;
  background: none;
  color: var(--accent);
  font: 600 1rem/1.2 "Open Sans", system-ui, sans-serif;
  padding: 8px 4px;
  cursor: pointer;
  white-space: nowrap;
  border-radius: 2px;
}

.linkish:hover { color: var(--flash); }

.drop {
  appearance: none;
  display: block;
  width: 100%;
  padding: 3px;
  border: 2px dashed var(--line);
  border-radius: 12px;
  background: var(--screen);
  cursor: pointer;
  overflow: hidden;
  text-align: left;
  color: inherit;
  font: inherit;
}

.drop:hover,
.drop.drag {
  border-color: transparent;
  outline: 3px solid #1989c6;
  outline-offset: 0;
  animation: pulse-focus 850ms infinite;
}

.drop canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  border-radius: 8px;
}

.drop-hint {
  display: block;
  padding: 12px 14px 14px;
  background: var(--panel2);
  color: var(--muted);
  font-size: 1rem;
}

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

.ghost {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: 600 1.05rem "Open Sans", system-ui, sans-serif;
  padding: 10px 8px;
  cursor: pointer;
  border-radius: 2px;
}

.ghost:hover { color: var(--text); }

.seg {
  display: flex;
  gap: 6px;
}

.seg button {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel2);
  color: var(--text);
  font: 400 1.05rem "Open Sans", system-ui, sans-serif;
  padding: 10px 16px;
  border-radius: 2px;
  cursor: pointer;
}

.seg button:hover {
  border-color: var(--accent);
  background: #3a3b3c;
}

.seg button.on {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
}

.seg button.on:hover {
  background: #95b6ff;
  border-color: #95b6ff;
}

.cta {
  margin-top: 32px;
  text-align: center;
}

.primary {
  appearance: none;
  border: 0;
  width: min(100%, 420px);
  background: var(--accent);
  color: var(--accent-text);
  font: 400 1.25rem "Open Sans", system-ui, sans-serif;
  padding: 16px 28px;
  border-radius: 2px;
  cursor: pointer;
}

.primary:hover {
  background: #95b6ff;
}
.primary:active { transform: scale(0.97); }

.primary.compact {
  width: auto;
  padding: 12px 20px;
  font-size: 1.05rem;
}

.status {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

footer {
  margin-top: 40px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 1rem;
}

footer a {
  color: var(--accent);
}

@keyframes pulse-focus {
  0% { outline-color: #1989c6; }
  50% { outline-color: #89f0f2; }
  100% { outline-color: #1989c6; }
}

.switch-focus-ring:hover,
.switch-focus-ring:focus:hover,
.drop:hover,
.drop.drag {
  outline: 3px solid #1989c6;
  outline-offset: 0;
  animation: pulse-focus 850ms infinite;
}

.switch-focus-ring:focus:not(:hover) {
  outline: none;
  animation: none;
}

.switch-focus-ring:focus-visible:not(:hover) {
  outline: 2px solid var(--accent);
  outline-offset: 0;
  animation: none;
}

dialog {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 2px;
  padding: 24px;
  max-width: 560px;
  width: calc(100% - 28px);
  overflow: visible;
}

#help-close:hover,
#help-close:focus:hover {
  outline: 3px solid #1989c6;
  outline-offset: 2px;
  animation: pulse-focus 850ms infinite;
}

dialog::backdrop { background: rgba(0, 0, 0, 0.7); }

dialog h3 {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 1.15rem;
  font-weight: 700;
}

dialog p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 1.05rem;
}

pre {
  margin: 0 0 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  font: 16px/1.45 ui-monospace, Consolas, monospace;
  padding: 14px 16px;
  border-radius: 2px;
  overflow: auto;
}

.dialog-actions {
  text-align: right;
  padding-top: 8px;
}

@media (max-width: 520px) {
  .app { padding: 24px 0 36px; }
  h1 { font-size: 1.85rem; }
  .logo { width: 96px; height: 96px; }
  .seg button { flex: 1; padding: 12px 8px; }
  .primary { width: 100%; }
}