/* ── Variables ── */
:root {
  --sand:  #E6E1C5;
  --blue:  #6D72C3;
  --onyx:  #151515;
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--sand);
  color: var(--onyx);
  font-family: Georgia, serif;
  font-size: 1rem;
  line-height: 1.6;
  padding: 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: Impact, 'Arial Black', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }

p { margin-bottom: 1rem; }

a {
  color: var(--blue);
  font-weight: bold;
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* ── Layout ── */
header, footer {
  padding: 2rem 0;
  margin-bottom: 2rem;
  border-bottom: 3px solid var(--onyx);
}

footer {
  border-bottom: none;
  border-top: 3px solid var(--onyx);
  margin-top: 2rem;
  margin-bottom: 0;
}

section { margin-bottom: 3rem; }

/* ── Nav ── */
nav { display: flex; gap: 0.25rem; margin-top: 1rem; }

nav a {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border: 2px solid var(--onyx);
  color: var(--onyx);
  font-family: Impact, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
}
nav a:hover, nav a.active {
  background: var(--onyx);
  color: var(--sand);
  text-decoration: none;
}

/* ── Buttons ── */
button {
  padding: 0.55rem 1.25rem;
  border: 2px solid var(--onyx);
  background: var(--sand);
  color: var(--onyx);
  font-family: Impact, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  cursor: pointer;
}
button:hover           { background: var(--onyx); color: var(--sand); }
button.btn-primary     { background: var(--onyx); color: var(--sand); }
button.btn-primary:hover { background: var(--blue); border-color: var(--blue); }
button.btn-danger      { border-color: #c0392b; color: #c0392b; }
button.btn-danger:hover { background: #c0392b; color: var(--sand); }
button:disabled        { opacity: 0.35; cursor: not-allowed; }

.btn-group { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

/* ── Forms ── */
label {
  display: block;
  font-family: Impact, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.8rem;
  margin-bottom: 0.3rem;
}

input, select, textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 2px solid var(--onyx);
  background: var(--sand);
  color: var(--onyx);
  font-size: 0.95rem;
  font-family: Georgia, serif;
  margin-bottom: 1rem;
  border-radius: 0;
  appearance: none;
}

input[type="color"] {
  width: 3rem;
  height: 3rem;
  padding: 0.2rem;
  cursor: pointer;
}

input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  padding: 0;
  cursor: pointer;
  appearance: auto;
  background: none;
  border: none;
}

input[type="file"] {
  cursor: pointer;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--blue);
}

.form-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.form-row .form-group { flex: 1 1 200px; min-width: 0; }
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; font-family: Georgia, serif; text-transform: none; letter-spacing: 0; font-size: 0.95rem; margin-bottom: 1rem; cursor: pointer; }
.checkbox-label input { width: auto; margin: 0; }

/* ── Footer ── */
footer nav { margin-bottom: 0.75rem; }
footer p { font-size: 0.85rem; }

/* ── Lists ── */
ul, ol { margin: 0 0 1rem 1.5rem; }
li { margin-bottom: 0.4rem; }

/* ── Tool Grid ── */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.tool-card { border: 2px solid var(--onyx); padding: 1.5rem; }
.tool-card h3 { margin-bottom: 0.5rem; }
.tool-card p { margin-bottom: 1rem; font-size: 0.95rem; }

/* ── Palette ── */
.palette-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 0.5rem; margin-bottom: 1rem; }
.palette-swatch {
  height: 100px;
  border: 2px solid var(--onyx);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  cursor: pointer;
  position: relative;
}
.palette-hex {
  display: block;
  background: var(--sand);
  color: var(--onyx);
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  padding: 0.2rem 0.4rem;
  margin-bottom: 0.25rem;
  border: 1px solid var(--onyx);
}

/* ── Size Info ── */
#size-info p { font-size: 0.95rem; }

/* ── Canvas ── */
canvas {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 1rem auto;
  cursor: crosshair;
  border: 2px solid var(--onyx);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  body { padding: 1rem; }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.2rem; }

  nav { flex-wrap: wrap; }
  nav a { font-size: 0.75rem; padding: 0.3rem 0.6rem; }

  .form-row .form-group { flex: 1 1 100%; }
}