/* style.css - Reseller Shipping Optimizer */

:root {
  /* Electric Teal Theme Accents */
  --teal-primary: #14b8a6;
  --teal-hover: #0d9488;
  --teal-focus: rgba(20, 184, 166, 0.3);
  
  /* Warning & Surcharge Alerts */
  --warning-red: #dc2626;
  --warning-orange: #ea580c;
  --warning-bg-red: #fef2f2;
  --warning-border-red: #fee2e2;
  
  /* Neutral scale */
  --text-charcoal: #18181b;
  --text-muted: #71717a;
  --border-light: #e4e4e7;
  --card-bg: #ffffff;
}

body.shipping-optimizer-body {
  background-color: #f4f4f5;
  color: var(--text-charcoal);
}

.optimizer-wrapper {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

.optimizer-title-section {
  text-align: center;
  margin-bottom: 2rem;
}

.optimizer-title-section h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-charcoal);
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
}

.optimizer-title-section .subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.optimizer-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.5rem;
  align-items: start;
}

/* Base Card Styles */
.optimizer-card {
  background-color: var(--card-bg);
  border-radius: 0.75rem;
  border: 1px solid var(--border-light);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  padding: 1.75rem;
  box-sizing: border-box;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.optimizer-card h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-charcoal);
  border-bottom: 2px solid var(--border-light);
  padding-bottom: 0.5rem;
}

/* Inputs design */
.input-group {
  margin-bottom: 1.25rem;
}

.input-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-charcoal);
}

.input-container input[type="number"] {
  width: 100%;
  padding: 0.85rem;
  border: 1px solid var(--border-light);
  border-radius: 0.5rem;
  font-size: 1.1rem;
  font-weight: 500;
  background-color: #fafafa;
  transition: all 0.15s ease;
  color: var(--text-charcoal);
  box-sizing: border-box;
}

/* Focus States in Electric Teal */
.input-container input[type="number"]:focus {
  outline: none;
  border-color: var(--teal-primary) !important;
  box-shadow: 0 0 0 4px var(--teal-focus) !important;
  background-color: #ffffff;
}

.quick-clear-row {
  margin-top: 1.5rem;
}

.quick-clear-row button {
  width: 100%;
  padding: 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 0.5rem;
  border: 1px solid var(--border-light);
  background-color: #fafafa;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.quick-clear-row button:hover {
  background-color: #f4f4f5;
  border-color: var(--text-muted);
}

/* Results metrics visual hierarchy */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.metric-block {
  background-color: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: 0.5rem;
  padding: 0.75rem 0.5rem;
  text-align: center;
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.metric-label .formula {
  display: block;
  font-size: 0.65rem;
  text-transform: none;
  font-weight: 400;
  color: #9ca3af;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-charcoal);
}

.metric-value .unit {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.divider {
  border: 0;
  height: 1px;
  background-color: var(--border-light);
  margin: 1.5rem 0;
}

/* Carrier Grid Comparison */
.carrier-grid-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-charcoal);
}

.carrier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.carrier-card {
  border: 1px solid var(--border-light);
  border-radius: 0.5rem;
  padding: 1rem 0.5rem;
  text-align: center;
  background-color: #ffffff;
  transition: all 0.25s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.carrier-header {
  margin-bottom: 0.5rem;
}

.carrier-name {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

#usps-card .carrier-name { color: #004b87; } /* USPS blue */
#ups-card .carrier-name { color: #ffb500; -webkit-text-stroke: 0.5px #351c15; text-shadow: 0 1px 0 rgba(0,0,0,0.05); } /* UPS Gold */
#fedex-card .carrier-name { color: #4d148c; } /* FedEx Purple */

.carrier-weight {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-charcoal);
  margin-bottom: 0.25rem;
  line-height: 1.1;
}

.carrier-note {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* High-Contrast Surcharge Warning Alerts Console */
.warning-console {
  background-color: var(--warning-bg-red);
  border: 2px solid var(--warning-red);
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1.5rem;
  box-sizing: border-box;
  animation: borderPulse 2s infinite ease-in-out;
}

.warning-console.hidden {
  display: none;
}

.warning-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--warning-red);
  margin-bottom: 0.5rem;
}

.warning-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.warning-title-row h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0;
}

.warning-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.warning-list li {
  font-size: 0.85rem;
  line-height: 1.4;
  color: #7f1d1d;
  margin-bottom: 0.35rem;
  padding-left: 1rem;
  position: relative;
}

.warning-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--warning-red);
  font-weight: bold;
}

.warning-list li:last-child {
  margin-bottom: 0;
}

/* Active Penalty Warning State Transitions */
.optimizer-card.has-warning {
  border-color: var(--warning-orange);
  box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.2);
}

.carrier-card.has-warning {
  border-color: var(--warning-red);
  background-color: var(--warning-bg-red);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.carrier-card.has-warning .carrier-weight {
  color: var(--warning-red);
}

/* Tactile button feedback */
.btn {
  transition: all 0.1s ease;
}

.btn:active {
  transform: scale(0.97);
}

/* Responsive Mobile Locks */
@media (max-width: 768px) {
  .optimizer-wrapper {
    padding: 0 1rem;
    margin: 1rem auto;
  }
  
  .optimizer-title-section h1 {
    font-size: 1.75rem;
  }
  
  .optimizer-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  /* Lock individual cards to compliant width of 390px max on mobile screens */
  .input-card,
  .results-card {
    max-width: 390px !important;
    width: 100% !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
  
  .carrier-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .carrier-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    text-align: left;
  }
  
  .carrier-header {
    margin-bottom: 0;
  }
  
  .carrier-weight {
    font-size: 1.5rem;
    margin-bottom: 0;
  }
  
  .carrier-note {
    text-align: right;
    max-width: 50%;
  }
}

/* Animation for alert border pulsing */
@keyframes borderPulse {
  0% {
    border-color: var(--warning-red);
    box-shadow: 0 0 0 0px rgba(220, 38, 38, 0.2);
  }
  50% {
    border-color: #ef4444;
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.25);
  }
  100% {
    border-color: var(--warning-red);
    box-shadow: 0 0 0 0px rgba(220, 38, 38, 0.2);
  }
}