*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
 
:root {
  --cream:        #f5efe0;
  --checker1:     #ede4d0;
  --checker2:     #e0d5be;
  --mustard:      #e8a020;
  --mustard-dark: #c47f00;
  --mustard-bg:   #fdf3d8;
  --brick:        #c0392b;
  --brick-bg:     #fde8e6;
  --sage:         #4a7c59;
  --sage-bg:      #e4f0e8;
  --sky:          #3a7ebf;
  --sky-bg:       #ddeeff;
  --brown:        #5c3d1e;
  --text:         #3b2a14;
  --muted:        #8a7055;
  --radius:       16px;
}
 
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 40px 16px 60px;
  background-color: var(--cream);
  background-image:
    linear-gradient(45deg,  var(--checker1) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker1) 25%, transparent 25%),
    linear-gradient(45deg,  transparent 75%, var(--checker2) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checker2) 75%);
  background-size: 40px 40px;
  background-position: 0 0, 0 20px, 20px -20px, -20px 0;
  font-family: 'Nunito', sans-serif;
  color: var(--text);
}
 
.page-title {
  font-family: 'Fredoka One', cursive;
  font-size: 30px;
  color: #fff;
  background: var(--brown);
  padding: 13px 38px;
  border-radius: 50px;
  margin-bottom: 32px;
  box-shadow: 0 4px 0 #3a2005, 0 6px 18px rgba(0,0,0,0.15);
  text-align: center;
  letter-spacing: 0.4px;
}
 
.card {
  width: 100%;
  max-width: 540px;
  background: var(--cream);
  border: 3px solid var(--checker2);
  border-radius: 24px;
  padding: 32px 26px;
  box-shadow: 0 6px 0 #cbbfa5, 0 12px 32px rgba(0,0,0,0.12);
  display: flex;
  flex-direction: column;
  gap: 28px;
}
 
.section {
  position: relative;
  border-radius: var(--radius);
  padding: 22px 18px 18px;
}
.section-label {
  position: absolute;
  top: -15px;
  left: 16px;
  font-family: 'Fredoka One', cursive;
  font-size: 16px;
  padding: 4px 16px;
  border-radius: 100px;
  line-height: 1.5;
  letter-spacing: 0.3px;
}
 
.block-mustard { background: var(--mustard-bg); border: 2.5px solid var(--mustard); }
.block-mustard .section-label { background: var(--mustard); color: #fff; }
 
.block-brick { background: var(--brick-bg); border: 2.5px solid var(--brick); }
.block-brick .section-label { background: var(--brick); color: #fff; }
 
.block-sage { background: var(--sage-bg); border: 2.5px solid var(--sage); }
.block-sage .section-label { background: var(--sage); color: #fff; }
 
.block-sky { background: var(--sky-bg); border: 2.5px solid var(--sky); }
.block-sky .section-label { background: var(--sky); color: #fff; }
 
input[type="text"] {
  width: 100%;
  margin-top: 6px;
  padding: 13px 16px;
  border-radius: 12px;
  border: 2.5px solid var(--mustard);
  background: #fffdf6;
  font-family: 'Nunito', sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input[type="text"]::placeholder { color: #c4a97a; font-weight: 500; }
input[type="text"]:focus {
  border-color: var(--mustard-dark);
  box-shadow: 0 0 0 3px rgba(232,160,32,0.22);
}
 
.hint {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-top: 9px;
}
 
.chip-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.chip {
  padding: 7px 18px;
  border-radius: 100px;
  border: 2.5px solid var(--brick);
  background: transparent;
  font-family: 'Nunito', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--brick);
  cursor: pointer;
  transition: all 0.15s;
}
.chip.active, .chip:hover { background: var(--brick); color: #fff; }
 
.btn-generate {
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: 14px;
  font-family: 'Fredoka One', cursive;
  font-size: 20px;
  letter-spacing: 0.4px;
  color: #fff;
  background: var(--sage);
  cursor: pointer;
  box-shadow: 0 4px 0 #2e5438, 0 6px 16px rgba(0,0,0,0.14);
  transition: transform 0.12s, box-shadow 0.12s;
}
.btn-generate:hover { transform: translateY(-2px); box-shadow: 0 6px 0 #2e5438, 0 10px 22px rgba(0,0,0,0.18); }
.btn-generate:active { transform: translateY(2px); box-shadow: 0 2px 0 #2e5438; }
 
.error-msg { display: none; font-size: 12px; font-weight: 700; color: var(--brick); margin-top: 7px; }
.error-msg.show { display: block; }
 
#qr-section {
  opacity: 0;
  transform: translateY(10px) scale(0.97);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
  visibility: hidden;
  display: none;
}
#qr-section.show {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  visibility: visible;
  display: block;
}
 
.qr-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-top: 6px;
}
 
.qr-frame {
  background: white;
  border: 3px dashed var(--sky);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 4px 0 #1f5a99, 0 8px 22px rgba(0,0,0,0.1);
  position: relative;
}
.qr-frame::before, .qr-frame::after {
  content: '✦';
  position: absolute;
  font-size: 13px;
  color: var(--sky);
  line-height: 1;
}
.qr-frame::before { top: 7px; left: 9px; }
.qr-frame::after  { bottom: 7px; right: 9px; }
 
#qr-img {
  display: block;
  border-radius: 8px;
  image-rendering: pixelated;
  width: 200px;
  height: 200px;
  object-fit: contain;
  background: #f8f8f8;
  transition: opacity 0.3s;
}
#qr-img.loading { opacity: 0.3; }
 
.qr-status {
  font-size: 12px;
  font-weight: 700;
  min-height: 18px;
  color: var(--muted);
  text-align: center;
}
.qr-status.error { color: var(--brick); }
 
.encoded-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.encoded-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--sky);
  max-width: 340px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}
 
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: 2.5px solid var(--mustard);
  border-radius: 100px;
  background: var(--mustard-bg);
  font-family: 'Nunito', sans-serif;
  font-size: 13px;
  font-weight: 800;
  color: var(--mustard-dark);
  cursor: pointer;
  box-shadow: 0 3px 0 var(--mustard);
  transition: all 0.15s;
}
.btn-download:hover { background: var(--mustard); color: #fff; box-shadow: 0 3px 0 var(--mustard-dark); }
.btn-download:active { transform: translateY(2px); box-shadow: none; }
.btn-download svg { width: 14px; height: 14px; }
 
.footer {
  margin-top: 26px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.04em;
}