:root {
  --ink: #191714;
  --paper: #f3eee4;
  --ivory: #fbf8f1;
  --bronze: #9a7448;
  --line: rgba(105, 81, 52, 0.28);
  --muted: #756d62;
  --shadow: 0 18px 50px rgba(48, 39, 26, 0.12);
}

* { box-sizing: border-box; }

html { background: #d9d1c4; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at 15% 8%, rgba(255,255,255,.75), transparent 32rem),
    linear-gradient(135deg, #ece6dc, #d7cdbf);
}

button, input { font: inherit; }

.shell {
  width: min(980px, 100%);
  margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) 18px max(40px, env(safe-area-inset-bottom));
}

.hero {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 6px 32px;
}

.mark {
  width: 70px;
  height: 70px;
  flex: 0 0 70px;
  display: grid;
  place-items: center;
  border: 1px solid var(--bronze);
  color: var(--bronze);
  background: rgba(255,255,255,.4);
  font-size: 42px;
  line-height: 1;
  box-shadow: inset 0 0 0 6px rgba(154,116,72,.08);
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 4px; font-size: clamp(2.2rem, 7vw, 4rem); font-weight: 500; letter-spacing: -.04em; }
h2 { margin-bottom: 0; font-size: 1.7rem; font-weight: 500; }
.subtitle { margin-bottom: 0; color: var(--muted); font-size: 1.05rem; }
.eyebrow { margin-bottom: 8px; font-family: Arial, sans-serif; font-size: .72rem; letter-spacing: .18em; color: var(--bronze); }

.panel, .preview-section {
  background: rgba(251,248,241,.94);
  border: 1px solid rgba(111,82,47,.22);
  box-shadow: var(--shadow);
  padding: clamp(20px, 5vw, 40px);
}

.upload-box {
  min-height: 170px;
  position: relative;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
  border: 1px dashed var(--bronze);
  background:
    linear-gradient(rgba(255,255,255,.66), rgba(255,255,255,.66)),
    repeating-linear-gradient(45deg, #f5efe5 0 8px, #eee4d5 8px 16px);
  cursor: pointer;
  padding: 28px;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.upload-box.dragging { outline: 3px solid rgba(154,116,72,.23); }

.file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.001;
  cursor: pointer;
  z-index: 3;
  font-size: 100px;
}

.upload-content {
  position: relative;
  z-index: 1;
  pointer-events: none;
  display: grid;
  place-items: center;
}
.upload-title { font-size: 1.45rem; }
.upload-copy, .file-name { font-family: Arial, sans-serif; }
.upload-copy { color: var(--muted); margin-top: 7px; font-size: .9rem; }
.file-name { color: var(--bronze); margin-top: 10px; font-size: .82rem; overflow-wrap: anywhere; }

.controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.field > span, .toggle {
  font-family: Arial, sans-serif;
  font-size: .88rem;
}

.field > span { display: block; margin-bottom: 8px; color: #4d473f; }

.color-row, .range-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

input[type="color"] {
  width: 54px;
  height: 45px;
  border: 1px solid var(--line);
  background: white;
  padding: 4px;
}

input[type="text"] {
  min-width: 0;
  width: 100%;
  height: 45px;
  border: 1px solid var(--line);
  background: white;
  padding: 0 12px;
  text-transform: uppercase;
}

input[type="range"] { width: 100%; accent-color: var(--bronze); }
output { width: 48px; font-family: Arial, sans-serif; font-size: .85rem; }

.toggle {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}
.toggle input { position: absolute; opacity: 0; }
.toggle-ui {
  width: 44px;
  height: 24px;
  border-radius: 20px;
  background: #bcb4a8;
  position: relative;
  transition: .2s;
}
.toggle-ui::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  transition: .2s;
}
.toggle input:checked + .toggle-ui { background: var(--bronze); }
.toggle input:checked + .toggle-ui::after { transform: translateX(20px); }

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 26px;
}

.button {
  min-height: 52px;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: transform .15s, opacity .15s;
}
.button:active { transform: scale(.99); }
.button:disabled { opacity: .4; cursor: not-allowed; }
.primary { background: var(--ink); color: var(--ivory); }
.secondary { background: transparent; color: var(--ink); }

.status {
  margin-top: 18px;
  min-height: 22px;
  font-family: Arial, sans-serif;
  font-size: .86rem;
  color: var(--muted);
}

progress { width: 100%; height: 8px; accent-color: var(--bronze); }

.preview-section { margin-top: 24px; }
.preview-heading { display: flex; justify-content: space-between; align-items: end; gap: 18px; margin-bottom: 20px; }
.text-button { border: 0; background: transparent; text-decoration: underline; color: var(--bronze); cursor: pointer; }
.text-button:disabled { opacity: .35; }

.preview-empty {
  min-height: 330px;
  display: grid;
  place-items: center;
  background: #d4cec4;
  border: 1px solid var(--line);
  overflow: auto;
  padding: 18px;
  color: #746b61;
  text-align: center;
}

.preview-empty canvas {
  display: block;
  max-width: 100%;
  height: auto;
  box-shadow: 0 12px 35px rgba(0,0,0,.22);
}

footer { padding: 22px 4px 0; color: #655e55; font-family: Arial, sans-serif; font-size: .78rem; text-align: center; }

@media (max-width: 650px) {
  .hero { align-items: flex-start; }
  .mark { width: 58px; height: 58px; flex-basis: 58px; font-size: 34px; }
  .controls, .actions { grid-template-columns: 1fr; }
  .toggle { grid-column: 1; }
  .preview-heading { align-items: center; }
}