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

:root {
  --bg-color: #faf9f7;
  --text-color: #2c2c2c;
  --text-light: #666;
  --border-color: #e0e0e0;
  --surface-color: #fff;
  --surface-hover: #f8f8f8;
  --accent-color: #333;
  --accent-hover: #222;
  --success-color: #22c55e;
  --error-color: #ef4444;
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #e0e0e0;
  --text-light: #999;
  --border-color: #333;
  --surface-color: #262626;
  --surface-hover: #2a2a2a;
  --accent-color: #e0e0e0;
  --accent-hover: #fff;
}

body {
  font-family: "Fira Code", monospace;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  font-weight: 300;
  transition: background-color 0.3s ease, color 0.3s ease;
  padding-top: 70px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  backdrop-filter: blur(10px);
}

.nav-content {
  max-width: 600px;
  margin: 0 auto;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-color);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  font-family: inherit;
}

.theme-toggle:hover {
  background-color: var(--surface-hover);
  border-color: var(--text-light);
}

/* Main Container */
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  min-height: calc(100vh - 140px);
  display: flex;
  flex-direction: column;
}

.hero {
  text-align: center;
  margin-bottom: 15px;
  padding-top: 20px;
}

.hero p {
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 300;
  margin-bottom: 8px;
}

.hero-subtitle {
  color: var(--text-light);
  font-size: 0.85rem;
  font-weight: 300;
  opacity: 0.8;
}

/* Upload Section */
.upload-section {
  margin-bottom: 30px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.upload-area {
  border: 2px dashed var(--border-color);
  background-color: var(--surface-color);
  padding: 50px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  border-radius: 12px;
  width: 100%;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.upload-area:hover {
  border-color: var(--text-color);
  background-color: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .upload-area:hover {
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.05);
}

.upload-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.upload-icon {
  font-size: 3rem;
  opacity: 0.6;
  transition: all 0.3s ease;
  margin-bottom: 5px;
}

.upload-area:hover .upload-icon {
  opacity: 1;
  transform: scale(1.1);
}

.upload-text {
  color: var(--text-color);
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 4px;
}

.upload-subtext {
  color: var(--text-light);
  font-size: 0.85rem;
  font-weight: 300;
  line-height: 1.4;
  max-width: 280px;
}

.upload-formats {
  color: var(--text-light);
  font-size: 0.75rem;
  font-weight: 300;
  opacity: 0.7;
  margin-top: 8px;
  padding: 6px 12px;
  background-color: var(--bg-color);
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

#upload {
  display: none;
}

/* Controls Section */
.controls-section {
  margin: 30px 0;
  padding: 25px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: none;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.control-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

label {
  font-size: 0.9rem;
  color: var(--text-color);
  font-weight: 400;
  min-width: 40px;
}

.slider-group {
  display: flex;
  align-items: center;
  gap: 15px;
  flex: 1;
}

#radius {
  flex: 1;
  height: 2px;
  background: var(--border-color);
  border: none;
  outline: none;
  cursor: pointer;
  border-radius: 2px;
}

#radius::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-color);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s ease;
}

#radius::-webkit-slider-thumb:hover {
  background: var(--accent-hover);
  transform: scale(1.1);
}

#radius::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--accent-color);
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.value {
  font-size: 0.85rem;
  color: var(--text-light);
  min-width: 45px;
  text-align: right;
}

#radiusValue {
  font-weight: 500;
  color: var(--text-color);
}

/* Preview Section */
.preview-section {
  margin: 30px 0;
  display: none;
  animation: slideIn 0.3s ease;
}

.canvas-wrapper {
  text-align: center;
  padding: 25px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

#canvas {
  max-width: 100%;
  max-height: 400px;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] #canvas {
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.05);
}

/* Notifications */
.notification {
  position: fixed;
  top: 90px;
  right: 20px;
  padding: 12px 20px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 400;
  z-index: 1000;
  transform: translateX(100%);
  opacity: 0;
  transition: all 0.3s ease;
}

.notification.show {
  transform: translateX(0);
  opacity: 1;
}

.notification.success {
  background-color: var(--success-color);
  color: white;
}

.notification.error {
  background-color: var(--error-color);
  color: white;
}

/* Download Section */
.download-section {
  text-align: center;
  display: flex;
  justify-content: center;
  margin: 30px 0;
}

.download-btn {
  background: var(--accent-color);
  color: var(--bg-color);
  border: none;
  padding: 15px 30px;
  font-size: 0.9rem;
  font-weight: 400;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  display: none;
  border-radius: 6px;
  animation: slideIn 0.3s ease;
}

.download-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Estados drag and drop */
.upload-area.dragover {
  border-color: var(--accent-color);
  background-color: var(--surface-hover);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .upload-area.dragover {
  box-shadow: 0 8px 20px rgba(255, 255, 255, 0.08);
}

.upload-area.dragover .upload-icon {
  transform: scale(1.15);
  opacity: 1;
}

.upload-area.dragover .upload-text {
  color: var(--accent-color);
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding: 20px 0;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-color);
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
  padding: 0 20px;
  text-align: center;
}

.footer-content p {
  color: var(--text-light);
  font-size: 0.85rem;
  margin-bottom: 6px;
  font-weight: 300;
}

.footer-content a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 400;
  transition: opacity 0.2s ease;
}

.footer-content a:hover {
  opacity: 0.7;
}

.copyright {
  font-size: 0.75rem !important;
  margin-bottom: 0 !important;
  opacity: 0.7;
}

/* Mobile */
@media (max-width: 768px) {
  body {
    padding-top: 60px;
  }

  .nav-content {
    padding: 12px 15px;
  }

  .container {
    padding: 15px;
    min-height: calc(100vh - 120px);
  }

  .hero {
    margin-bottom: 15px;
    padding-top: 15px;
  }

  .site-footer {
    padding: 15px 0;
  }

  .upload-area {
    padding: 40px 15px;
    min-height: 200px;
  }

  .upload-icon {
    font-size: 2.5rem;
  }

  .upload-text {
    font-size: 1rem;
  }

  .upload-subtext {
    font-size: 0.8rem;
    max-width: 250px;
  }

  .control-group {
    flex-direction: column;
    align-items: stretch;
    gap: 15px;
  }

  .slider-group {
    justify-content: space-between;
  }

  label {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 10px;
  }

  .hero {
    margin-bottom: 12px;
  }

  .controls-section,
  .canvas-wrapper {
    padding: 20px 15px;
  }

  .footer-content {
    padding: 0 15px;
  }

  .upload-area {
    padding: 35px 10px;
    min-height: 180px;
  }

  .upload-icon {
    font-size: 2.2rem;
  }

  .upload-subtext {
    max-width: 220px;
  }
}