/*! HTML5 Boilerplate v9.0.1 | MIT License | https://html5boilerplate.com/ */

/* Verberg pijltjes bij number inputs (Chrome/Edge/Safari) */
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Verberg pijltjes bij number inputs (Firefox) */
input[type=number] {
    -moz-appearance: textfield;
}

:root {
  --color-primary: #8b0000;
  --color-primary-hover: #a01111;
  --color-secondary: #d4af37;
  --color-text: #333;
  --color-light: #f5f5f5;
  --color-border: #ddd;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #2d1810 0%, #5c3d2e 50%, #1a1410 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  position: relative;
  overflow-x: hidden;
}

/* Decorative background pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle at 20% 50%, rgba(139, 0, 0, 0.1) 0%, transparent 50%),
  radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  padding: 40px;
  max-width: 600px;
  width: 100%;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(10px);
}

.header {
  text-align: center;
  margin-bottom: 30px;
  border-bottom: 3px solid var(--color-secondary);
  padding-bottom: 20px;
}

.header h1 {
  color: var(--color-primary);
  font-size: 28px;
  margin-bottom: 10px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header p {
  color: #666;
  font-size: 14px;
  font-weight: 500;
}

.wine-icon {
  font-size: 40px;
  margin-bottom: 10px;
}

.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

input[type="number"],
input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--color-text);
  transition: var(--transition);
  background: white;
}

input[type="number"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 0, 0, 0.1);
}

input[type="number"]::placeholder {
  color: #999;
}

.unit {
  position: absolute;
  right: 14px;
  color: #999;
  font-size: 12px;
  font-weight: 600;
  pointer-events: none;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

@media (max-width: 500px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 24px;
  }

  .header h1 {
    font-size: 24px;
  }
}

.submit-btn {
  width: 100%;
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(139, 0, 0, 0.2);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(139, 0, 0, 0.3);
}

.submit-btn:active {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.loading {
  display: none;
  text-align: center;
  margin: 20px 0;
}

.spinner {
  border: 3px solid var(--color-light);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: spin 1s linear infinite;
  margin: 0 auto 10px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.results {
  display: none;
  margin-top: 30px;
  padding-top: 30px;
  border-top: 3px solid var(--color-secondary);
}

.results-title {
  color: var(--color-primary);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

.result-item {
  background: linear-gradient(135deg, rgba(139, 0, 0, 0.05), rgba(212, 175, 55, 0.05));
  border: 2px solid var(--color-secondary);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 15px;
  transition: var(--transition);
}

.result-item:hover {
  box-shadow: 0 8px 20px rgba(139, 0, 0, 0.15);
  transform: translateY(-2px);
}

.result-item:last-child {
  margin-bottom: 0;
}

.result-rank {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  width: 250px;
  height: 35px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 10px;
}

.result-content {
  margin-top: 10px;
}

.result-label {
  color: #666;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.result-value {
  color: var(--color-primary);
  font-size: 24px;
  font-weight: 700;
  margin: 5px 0;
}

.result-description {
  color: #888;
  font-size: 13px;
  margin-top: 8px;
  line-height: 1.5;
}

.error {
  background: #fee;
  color: #c33;
  padding: 14px;
  border-radius: 8px;
  margin-top: 15px;
  border-left: 4px solid #c33;
  font-size: 13px;
  display: none;
}

.error.show {
  display: block;
  animation: slideDown 0.3s ease-out;
}

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

.info-text {
  background: #f0f8ff;
  color: #1e5a8e;
  padding: 12px;
  border-radius: 8px;
  font-size: 12px;
  margin-bottom: 20px;
  border-left: 4px solid #1e5a8e;
}

.preset-buttons {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.preset-button {
    padding: 8px 10px;
    border-radius: 999px;
    border: none;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    color: #fff;
}

/* Rode wijn knoppen */
.preset-button.red {
    background: linear-gradient(135deg, #5c0b18, #8b0000);
}

/* Witte wijn knoppen */
.preset-button.white {
    background: linear-gradient(135deg, #c9b56b, #f1e2a4);
    color: #3b3315;
}

.preset-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}