@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

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

body {
  font-family: 'Poppins', sans-serif;
  background: #FFFFFF;
  color: #1A1A1A;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

header {
  text-align: center;
  padding: 4rem 2rem 3rem;
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: linear-gradient(135deg, rgba(119, 172, 183, 0.05) 0%, rgba(63, 196, 149, 0.05) 100%);
  z-index: -1;
}

header h1 {
  font-size: 4.5rem;
  font-weight: 800;
  color: #3FC495;
  margin-bottom: 0.5rem;
  letter-spacing: -2px;
  text-transform: uppercase;
  position: relative;
}

header h1::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, #77ACB7, #3FC495);
  border-radius: 2px;
}

header p {
  font-size: 1.2rem;
  color: #1A1A1A;
  font-weight: 400;
  margin-top: 1.5rem;
  letter-spacing: 0.5px;
}

main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
}

.controls {
  background: #FFFFFF;
  border: 2px solid #77ACB7;
  border-radius: 20px;
  padding: 3rem;
  margin-bottom: 3rem;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 2rem;
  box-shadow: 0 10px 40px rgba(119, 172, 183, 0.15);
  position: relative;
}

.controls > input[type="file"],
.controls > input[type="url"] {
  grid-column: 1 / -1;
}

.controls > label {
  grid-column: span 2;
}

#previewBtn {
  grid-column: 1 / 4;
}

#pdfBtn {
  grid-column: 4 / 7;
}

.controls::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, #77ACB7, #3FC495);
  border-radius: 20px;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.controls:hover::before {
  opacity: 0.1;
}

.controls label {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #F8B097;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.controls input[type="file"],
.controls input[type="url"],
.controls input[type="number"],
.controls select {
  padding: 1rem 1.25rem;
  border: 2px solid #1A1A1A;
  border-radius: 10px;
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #FFFFFF;
  color: #1A1A1A;
  font-weight: 500;
  width: 100%;
  min-width: 0;
}

.controls input[type="file"] {
  padding: 0.8rem;
  cursor: pointer;
  border-style: dashed;
}

.controls input[type="file"]::file-selector-button {
  padding: 0.6rem 1.5rem;
  border: none;
  background: #3FC495;
  color: white;
  border-radius: 6px;
  cursor: pointer;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  margin-right: 1rem;
  transition: all 0.3s ease;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

.controls input[type="file"]::file-selector-button:hover {
  background: #77ACB7;
  transform: scale(1.05);
}

.controls input:focus,
.controls select:focus {
  outline: none;
  border-color: #3FC495;
  box-shadow: 0 0 0 4px rgba(63, 196, 149, 0.1);
}

.controls button {
  padding: 1.2rem 2.5rem;
  border: none;
  border-radius: 10px;
  font-family: 'Poppins', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}

.controls button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.controls button:hover::before {
  width: 300px;
  height: 300px;
}

#previewBtn {
  background: #77ACB7;
  color: white;
  box-shadow: 0 6px 20px rgba(119, 172, 183, 0.3);
}

#previewBtn:hover {
  background: #3FC495;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(63, 196, 149, 0.4);
}

#pdfBtn {
  background: #F8B097;
  color: white;
  box-shadow: 0 6px 20px rgba(248, 176, 151, 0.3);
}

#pdfBtn:hover {
  background: #ff9a7a;
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(248, 176, 151, 0.4);
}

.controls button:active {
  transform: translateY(-1px);
}

.preview {
  background: linear-gradient(135deg, rgba(119, 172, 183, 0.05) 0%, rgba(63, 196, 149, 0.05) 100%);
  border-radius: 20px;
  padding: 3rem;
  margin-bottom: 3rem;
  min-height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed #77ACB7;
  position: relative;
}

#previewCanvas {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 15px 50px rgba(26, 26, 26, 0.15);
}

.canvas-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.canvas-container canvas {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(26, 26, 26, 0.1);
  background: white;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 3px solid transparent;
}

.canvas-container canvas:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 60px rgba(63, 196, 149, 0.2);
  border-color: #3FC495;
}

footer {
  text-align: center;
  padding: 3rem 2rem;
  background: linear-gradient(135deg, rgba(119, 172, 183, 0.05) 0%, rgba(63, 196, 149, 0.05) 100%);
  margin-top: auto;
  border-top: 2px solid #77ACB7;
}

footer p {
  color: #1A1A1A;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 768px) {
  header h1 {
    font-size: 3rem;
  }
  
  header p {
    font-size: 1rem;
  }
  
  .controls {
    padding: 2rem 1.5rem;
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .controls > input[type="file"],
  .controls > input[type="url"],
  .controls > label {
    grid-column: 1;
  }

  #previewBtn,
  #pdfBtn {
    grid-column: 1;
  }
  
  main {
    padding: 1rem;
  }
  
  .canvas-container {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .controls {
    padding: 2.5rem;
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .controls > input[type="file"],
  .controls > input[type="url"],
  .controls > label {
    grid-column: 1;
  }

  #previewBtn,
  #pdfBtn {
    grid-column: 1;
  }
}

/* Animaciones */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.controls,
.preview {
  animation: slideUp 0.6s ease-out;
}

.canvas-container canvas {
  animation: slideUp 0.6s ease-out;
}