* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  min-width: 100vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: #402a1a;
  text-align: center;
}

h1 {
  letter-spacing: 1px;
  color: #e9caa1;
  font-family: sans-serif;
  margin-bottom: 20px;
  -webkit-text-stroke: 4px #86644c;
  paint-order: stroke fill;
}

main {
  max-width: 92vw;
}

.container {
  position: relative;
  display: flex;
  justify-content: center;
  padding: 30px 30px;
  max-width: 92vw;

  background:
    radial-gradient(120% 80% at 50% 0%, #e9caa1, #d5ae84 60%, #c39a71 100%);
  border-radius: 18px;
  box-shadow:
    inset 0 2px 0 #fff4e6,
    inset 0 -3px 0 rgba(0, 0, 0, .08),
    0 16px 28px rgba(0, 0, 0, .35);
  border: 4px solid #8a5a37;
  position: relative;
}

canvas::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 6px;
  background:
    linear-gradient(to right, rgba(92, 61, 35, .35) 0 2px, transparent 2px calc(33.333% - 1px), rgba(92, 61, 35, .35) calc(33.333% - 1px) calc(33.333% + 1px), transparent calc(33.333% + 1px) calc(66.666% - 1px), rgba(92, 61, 35, .35) calc(66.666% - 1px) calc(66.666% + 1px), transparent calc(66.666% + 1px) 100%),
    linear-gradient(to bottom, rgba(92, 61, 35, .35) 0 2px, transparent 2px calc(33.333% - 1px), rgba(92, 61, 35, .35) calc(33.333% - 1px) calc(33.333% + 1px), transparent calc(33.333% + 1px) calc(66.666% - 1px), rgba(92, 61, 35, .35) calc(66.666% - 1px) calc(66.666% + 1px), transparent calc(66.666% + 1px) 100%);
  pointer-events: none;
}

.container::before,
.container::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 16px;
  pointer-events: none;
  background:
    radial-gradient(circle at 18px 18px, #b6b2ad 0 7px, #6c6b6a 7px 9px, transparent 9px),
    radial-gradient(circle at calc(100% - 18px) 18px, #b6b2ad 0 7px, #6c6b6a 7px 9px, transparent 9px),
    radial-gradient(circle at 18px calc(100% - 18px), #b6b2ad 0 7px, #6c6b6a 7px 9px, transparent 9px),
    radial-gradient(circle at calc(100% - 18px) calc(100% - 18px), #b6b2ad 0 7px, #6c6b6a 7px 9px, transparent 9px);
}

.container::after {
  box-shadow: inset 0 0 0 6px rgba(0, 0, 0, .08), inset 0 0 0 12px rgba(255, 255, 255, .15);
  border-radius: 18px;
}

.canvasContainer {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

canvas {
  touch-action: none;
  border-radius: 12px;
  background:
    linear-gradient(#f3e6d6, #f0e0c8) padding-box;
  border: 10px solid transparent;
  border-image: linear-gradient(#c79666, #9a6a3f) 1;
  box-shadow:
    inset 0 3px 0 #fff5e6,
    inset 0 -6px 14px rgba(0, 0, 0, .25),
    0 8px 18px rgba(0, 0, 0, .35);
  position: relative;
}

canvas::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 6px;
  background:
    linear-gradient(to right, rgba(92, 61, 35, .35) 0 2px, transparent 2px calc(33.333% - 1px), rgba(92, 61, 35, .35) calc(33.333% - 1px) calc(33.333% + 1px), transparent calc(33.333% + 1px) calc(66.666% - 1px), rgba(92, 61, 35, .35) calc(66.666% - 1px) calc(66.666% + 1px), transparent calc(66.666% + 1px) 100%),
    linear-gradient(to bottom, rgba(92, 61, 35, .35) 0 2px, transparent 2px calc(33.333% - 1px), rgba(92, 61, 35, .35) calc(33.333% - 1px) calc(33.333% + 1px), transparent calc(33.333% + 1px) calc(66.666% - 1px), rgba(92, 61, 35, .35) calc(66.666% - 1px) calc(66.666% + 1px), transparent calc(66.666% + 1px) 100%);
  pointer-events: none;
}

.canvasControls {
  width: 100%;
  margin-top: 14px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.canvasControls>button:nth-child(2) {
  flex: 2;
}

.canvasControls>button:nth-child(2) {
  flex: 1;
}

button {
  --shadow: rgba(0, 0, 0, .35);
  padding: 12px 18px;
  border-radius: 999px;
  border: 4px solid #7b4a28;
  background:
    radial-gradient(120% 200% at 50% 0%, #e9bf8b 0, #d9ab76 45%, #c79362 100%);
  box-shadow:
    inset 0 2px 0 #ffe8cc,
    inset 0 -3px 0 rgba(0, 0, 0, .15),
    0 8px 14px var(--shadow);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .3px;
  color: #3b2415;
  cursor: pointer;
  transition: transform .08s ease, box-shadow .12s ease, filter .12s ease;
}

button:disabled {
  cursor: not-allowed;
  filter: opacity(0.5);
}

button:hover:not(:disabled) {
  filter: brightness(1.05);
}

button:active:not(:disabled) {
  transform: translateY(1px);
  box-shadow:
    inset 0 3px 0 rgba(0, 0, 0, .12),
    0 4px 8px rgba(0, 0, 0, .35);
}

.imageControl {
  margin-top: 18px;
  padding: 14px 16px;
  background: radial-gradient(130% 140% at 50% -20%, #edd3ad, #d7b085 55%, #c39a71 100%);
  border: 3px solid #8a5a37;
  border-radius: 12px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, .35), inset 0 2px 0 rgba(255, 255, 255, .6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

h2 {
  font-weight: 700;
  font-size: 18px;
  color: #4a2e1e;
}

input[type="file"] {
  font-size: 14px;
  color: #3b2415;
  border: 2px dashed #91613f;
  background: #fff4e6;
  padding: 10px 12px;
  border-radius: 10px;
  width: 100%;
}

input[type="file"]::file-selector-button {
  margin-right: 10px;
  padding: 8px 12px;
  border: 2px solid #7b4a28;
  border-radius: 999px;
  background: linear-gradient(#e7bb88, #cf9b67);
  color: #2f1d12;
  font-weight: 700;
  cursor: pointer;
}

input[type="file"]::file-selector-button:hover {
  filter: brightness(1.05);
}

@media (max-width: 480px) {
  .container {
    padding: 18px;
  }

  .canvasControls {
    gap: 10px;
  }

  button {
    padding: 10px 14px;
    font-size: 13px;
  }
}