:root {
  /* Jasper / SLR brand palette, shared with the other jasper.tools sites */
  --slate: #3f5355;
  --slate-d: #34464a;
  --bg: #f4f3ee;
  --panel: #ffffff;
  --border: #d9dcd2;
  --text: #27383a;
  --text-muted: #6f8182;
  --accent: #2f8f8b;
  --accent-hover: #247470;
  --cyan: #5ec5c2;
  --radius: 14px;
  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* brand header */
#brandbar {
  flex: none;
  height: 80px;
  background: var(--slate-d);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 22px;
  color: #fff;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .15);
}
#brandbar .home { display: block; }
#brandbar img.logo { height: 46px; display: block; }
#brandbar .divider { width: 1px; height: 40px; background: rgba(255, 255, 255, .25); }
#brandbar .title { font-family: var(--serif); font-size: 26px; font-weight: 500; letter-spacing: .2px; color: #eef3f1; }
#brandbar .title b { font-weight: 600; }
#brandbar a.title { text-decoration: none; }

.app {
  flex: 1;
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 22px 48px;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.5;
  max-width: 62ch;
}

footer {
  flex: none;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding: 18px 22px 26px;
}
footer a { color: var(--accent-hover); text-decoration: none; }
footer a:hover { text-decoration: underline; }

@media (max-width: 720px) {
  #brandbar { height: 56px; gap: 10px; padding: 0 16px; }
  #brandbar img.logo { height: 30px; }
  #brandbar .divider { height: 26px; }
  #brandbar .title { font-size: 18px; }
  .app { padding: 20px 16px 36px; }
}

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 760px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-row {
  flex-direction: row;
  gap: 16px;
}

.field-half {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 13px;
  font-weight: 600;
  color: var(--slate);
}

textarea,
input[type="text"],
input[type="number"],
select {
  font-family: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  width: 100%;
}

textarea {
  resize: vertical;
}

input[type="color"] {
  width: 100%;
  height: 38px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  cursor: pointer;
}

input[type="range"] {
  width: 100%;
}

input[type="file"] {
  font-size: 13px;
  flex: 1;
  min-width: 0; /* let a long file name shrink instead of pushing Remove out of the panel */
  overflow: hidden;
  text-overflow: ellipsis;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  cursor: pointer;
}

.checkbox-label input {
  width: 16px;
  height: 16px;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-primary,
.btn-secondary {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.btn-secondary:hover {
  background: #e3f1ef;
}

input[type="checkbox"],
input[type="range"] {
  accent-color: var(--accent);
}

textarea:focus,
input:focus,
select:focus {
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
}

.hint {
  margin: 0;
  font-size: 12px;
  color: #a06400;
  background: #fff6e5;
  border: 1px solid #f0dca0;
  border-radius: 8px;
  padding: 8px 10px;
}

.preview {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  position: sticky;
  top: 24px;
}

.canvas-wrap {
  background-image:
    linear-gradient(45deg, #e6e7e0 25%, transparent 25%),
    linear-gradient(-45deg, #e6e7e0 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #e6e7e0 75%),
    linear-gradient(-45deg, transparent 75%, #e6e7e0 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  background-color: #f7f7f4;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: inline-flex;
}

#qrCanvas {
  max-width: 100%;
  width: 420px;
  height: 420px;
  display: block;
}