/* ============================================
   Input Section & Controls
   ============================================ */

.input-section {
  margin-bottom: 2rem;
}

.input-section h2 {
  text-align: center;
}

/* Input Groups */
.input-group {
  margin-bottom: 2.5rem;
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-group label {
  display: block;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

/* Input Display Value */
.input-display {
  display: flex;
  align-items: baseline;
  gap: 0.15rem;
  margin-bottom: 0.25rem;
  padding: 0.5rem 1rem;
  background: #f0f0f0;
  border-radius: 8px;
  width: fit-content;
}

.input-helper-text {
  font-size: 0.75rem;
  color: var(--text-light);
  font-style: italic;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.sub-input-right {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sub-input-right > .input-helper-text {
  margin-bottom: 0;
}

.currency-prefix {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary-teal);
  line-height: 1;
}

.value-input {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary-teal);
  border: none;
  background: transparent;
  font-family: inherit;
  width: 7rem;
  padding: 0;
  outline: none;
  line-height: 1;
  text-align: center;
}

.value-input:focus {
  border-bottom: 2px solid var(--light-blue);
}

/* ============================================
   Custom Slider Styling
   ============================================ */

.slider {
  width: 100%;
  height: 14px;
  border-radius: 7px;
  background: linear-gradient(
    to right,
    var(--light-blue) 0%,
    var(--light-blue) var(--slider-value, 20%),
    var(--border-color) var(--slider-value, 20%),
    var(--border-color) 100%
  );
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  margin-bottom: 1rem;
}

/* Webkit slider thumb (Chrome, Safari) */
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-teal);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border: 2px solid var(--background-white);
}

.slider::-webkit-slider-thumb:hover {
  width: 36px;
  height: 36px;
  box-shadow: var(--shadow-lg);
  background: var(--light-blue);
}

/* Firefox slider thumb */
.slider::-moz-range-thumb {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-teal);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--background-white);
  transition: all 0.3s ease;
}

.slider::-moz-range-thumb:hover {
  width: 36px;
  height: 36px;
  box-shadow: var(--shadow-lg);
  background: var(--light-blue);
}

/* Firefox track */
.slider::-moz-range-track {
  background: transparent;
  border: none;
}

.slider::-moz-range-progress {
  background: var(--light-blue);
  height: 14px;
  border-radius: 7px;
}

/* ============================================
   Card Selection Section
   ============================================ */

.card-selection-section {
  margin-bottom: 2rem;
}

.card-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

/* Card Buttons */
.card-btn {
  padding: 1.5rem;
  border: 2px solid var(--border-color);
  border-radius: 0.75rem;
  background: var(--background-white);
  text-align: left;
  transition: all 0.3s ease;
  cursor: pointer;
}

.card-btn:hover {
  border-color: var(--light-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-btn.active {
  border-color: var(--primary-teal);
  background: linear-gradient(135deg, rgba(16, 60, 84, 0.05), rgba(117, 194, 230, 0.05));
  box-shadow: var(--shadow-lg);
  border-width: 3px;
}

.card-btn:focus {
  outline: 2px solid var(--light-blue);
  outline-offset: 2px;
}

.card-name {
  display: block;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.card-fee {
  display: block;
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 0.75rem;
}

.card-rate {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-teal);
}

[data-card="obsidian"] .card-rate {
  font-size: 0.8rem;
  line-height: 1.3;
}

/* ============================================
   Obsidian Spending Breakdown
   ============================================ */

.obsidian-category {
  background: rgba(117, 194, 230, 0.05);
  border: 2px solid var(--light-blue);
  padding: 1.5rem;
  border-radius: 0.75rem;
}

.breakdown-hint {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 1.25rem;
  margin-top: 0;
}

.sub-input-group {
  margin-bottom: 1.25rem;
}

.sub-input-group:last-child {
  margin-bottom: 0;
}

.sub-input-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.sub-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.sub-display {
  margin-bottom: 0;
  padding: 0.35rem 0.75rem;
  background: #f0f0f0;
  border-radius: 8px;
}

.sub-prefix {
  font-size: 1.5rem;
}

.sub-value {
  font-size: 1.5rem;
  width: 4.8rem;
  text-align: center;
}

.sub-value-readonly {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
}

.sub-slider {
  height: 10px;
  border-radius: 5px;
}

.auto-calculated {
  background: rgba(117, 194, 230, 0.05);
  padding: 1rem;
  border-radius: 0.5rem;
}

.auto-calc-bar {
  width: 100%;
  height: 10px;
  background: var(--border-color);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.auto-calc-fill {
  height: 100%;
  background: var(--text-light);
  border-radius: 5px;
  transition: width 0.3s ease;
}

.auto-calc-note {
  font-size: 0.75rem;
  color: var(--text-light);
  font-style: italic;
}

/* ============================================
   Recommendation Banner
   ============================================ */

.recommendation-banner {
  background: var(--success-green);
  color: var(--background-white);
  padding: 1.25rem 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
  text-align: center;
  animation: slideDown 0.3s ease;
  box-shadow: var(--shadow-md);
}

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

/* ============================================
   Tier Indicator
   ============================================ */

.tier-indicator {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: rgba(117, 194, 230, 0.05);
  border-radius: 0.5rem;
  border-left: 4px solid var(--light-blue);
}

.tier-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}

.tier-progress {
  margin-bottom: 1rem;
}

.tier-progress-bar {
  width: 100%;
  height: 12px;
  background: var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.tier-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--light-blue), var(--primary-teal));
  width: 0%;
  transition: width 0.4s ease;
  border-radius: 10px;
}

.tier-markers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 600;
}

.marker small {
  display: block;
  font-size: 0.65rem;
  color: var(--text-light);
  font-weight: 400;
  margin-top: 0.25rem;
}

.current-tier {
  font-size: 0.9rem;
  color: var(--primary-teal);
  font-weight: 600;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
  .card-selector {
    grid-template-columns: 1fr;
  }

  .card-btn {
    padding: 1.25rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .logo {
    width: 100px;
  }
}