/* ======================================= */
/* KORTING CALCULATOR - MODERN UNIFIED    */
/* ======================================= */

/* ===== COLOR DEFINITIONS ===== */
/* Dark mode is default, light mode overrides via :root.light-mode */

.korting-card {
  /* Dark mode colors */
  --korting-bg-card: var(--secondary-bg);
  --korting-bg-input: var(--primary-bg);
  --korting-bg-form: var(--secondary-bg);
  --korting-bg-preset: var(--primary-bg);
  --korting-bg-preview: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  --korting-border: var(--border-color);
  --korting-text: var(--text-primary);
  --korting-text-secondary: var(--text-secondary);
  --korting-button-bg: var(--link-color);
  --korting-button-text: var(--text-primary);
  --korting-button-border: var(--border-color);
  --korting-button-hover-border: var(--link-color);
  --korting-button-hover-shadow: rgba(88, 166, 255, 0.2);
  --korting-type-btn-active-bg: var(--link-color);
  --korting-type-btn-active-border: var(--link-color);
  --korting-type-btn-active-shadow: rgba(88, 166, 255, 0.3);
  --korting-focus-border: var(--link-color);
  --korting-focus-shadow: rgba(88, 166, 255, 0.1);
  --korting-success: #10b981;
  --korting-success-dark: #059669;
  --korting-error: #ef4444;
  --korting-error-dark: #dc2626;
  --korting-error-darker: #b91c1c;
  --korting-error-shadow: rgba(239, 68, 68, 0.3);
  --korting-purple: #9333ea;
  --korting-purple-dark: #7e22ce;
}

/* Light mode color overrides */
:root.light-mode .korting-card {
  --korting-bg-card: #ffffff;
  --korting-bg-input: #f9fafb;
  --korting-bg-form: #ffffff;
  --korting-bg-preset: #f3f4f6;
  --korting-bg-preview: #ffffff;
  --korting-border: #d0d7de;
  --korting-text: #24292f;
  --korting-text-secondary: #57606a;
  --korting-button-bg: #ffffff;
  --korting-button-text: #24292f;
  --korting-button-border: #d0d7de;
  --korting-button-hover-border: #0969da;
  --korting-button-hover-shadow: rgba(9, 105, 218, 0.15);
  --korting-type-btn-active-bg: #0969da;
  --korting-type-btn-active-border: #0969da;
  --korting-type-btn-active-shadow: rgba(9, 105, 218, 0.2);
  --korting-focus-border: #0969da;
  --korting-focus-shadow: rgba(9, 105, 218, 0.1);
  --korting-success: #10b981;
  --korting-success-dark: #059669;
  --korting-error: #ef4444;
  --korting-error-dark: #dc2626;
  --korting-error-darker: #b91c1c;
  --korting-error-shadow: rgba(239, 68, 68, 0.3);
  --korting-purple: #7c3aed;
  --korting-purple-dark: #6d28d9;
}

/* ===== MAIN CARD ===== */
.korting-card {
  max-width: 100%;
  margin: 0 auto;
  padding: 1.25rem;
  background: var(--korting-bg-card);
  border: 1px solid var(--korting-border);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  color: var(--korting-text);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

/* Gradient top border */
.korting-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--korting-purple),
    var(--korting-type-btn-active-bg),
    var(--korting-purple)
  );
  background-size: 200% 100%;
  animation: kortingGradientShift 3s ease infinite;
}

@keyframes kortingGradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* ===== HEADER ===== */
.korting-card-title {
  color: var(--korting-text);
  font-size: 1.6rem;
  margin-bottom: 0.375rem;
  text-align: center;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.korting-card-subtitle {
  text-align: center;
  color: var(--korting-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-weight: 400;
}

/* ===== FEEDBACK ===== */
.korting-card-feedback {
  background: linear-gradient(
    135deg,
    var(--korting-success) 0%,
    var(--korting-success-dark) 100%
  );
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  text-align: center;
  margin-bottom: 1.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  opacity: 0;
  transition: all 0.3s ease;
  visibility: hidden;
  transform: translateY(-10px);
}

.korting-card-feedback.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.korting-card-feedback.error {
  background: linear-gradient(
    135deg,
    var(--korting-error) 0%,
    var(--korting-error-dark) 100%
  );
}

/* ===== LAYOUT ===== */
.korting-card-main-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 992px) {
  .korting-card-main-layout {
    grid-template-columns: 450px 1fr;
  }
}

.korting-card-left {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.korting-card-right {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: 20px;
  align-self: start;
}

/* ===== SECTIONS ===== */
.korting-card-preset-section,
.korting-card-input-section,
.korting-card-results-section,
.korting-card-history-section {
  background: var(--korting-bg-form);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--korting-border);
  transition: all 0.3s ease;
}

.korting-card-preset-section:hover,
.korting-card-input-section:hover,
.korting-card-results-section:hover,
.korting-card-history-section:hover {
  border-color: var(--korting-button-hover-border);
}

/* ===== PRESET SECTION ===== */
.preset-title {
  color: var(--korting-text);
  font-size: 1rem;
  margin: 0 0 0.75rem 0;
  font-weight: 600;
  text-align: center;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.korting-card .preset-btn {
  background: var(--korting-bg-preset) !important;
  border: 2px solid var(--korting-border);
  border-radius: 8px;
  padding: 0.625rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  color: var(--korting-text);
}

.korting-card .preset-btn:hover {
  border-color: var(--korting-button-hover-border);
  background: var(--korting-bg-form) !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--korting-button-hover-shadow);
}

/* Readability (fix dark mode) */
.korting-card .preset-btn .preset-name {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--korting-text);
}

.korting-card .preset-btn .preset-price {
  font-size: 0.75rem;
  color: var(--korting-text-secondary);
  font-family: monospace;
  font-weight: 600;
}

.preset-icon {
  font-size: 1.5rem;
}

/* Selected preset (persistent) */
.korting-card .preset-btn.is-selected {
  border-color: var(--korting-type-btn-active-border);
  background: var(--korting-bg-form) !important;
  box-shadow: 0 0 0 3px var(--korting-focus-shadow),
    0 4px 12px var(--korting-type-btn-active-shadow);
  transform: translateY(-1px);
}

.korting-card .preset-btn.is-selected .preset-price {
  color: var(--korting-type-btn-active-bg);
  font-weight: 700;
}

/* ===== INPUT SECTION ===== */
.korting-card-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

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

.korting-card-input-group label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--korting-text);
}

.korting-card-input-group input {
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: var(--korting-bg-input);
  color: var(--korting-text);
  border: 2px solid var(--korting-border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-family: monospace;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.korting-card-input-group input::placeholder {
  color: var(--korting-text-secondary);
  opacity: 0.6;
}

.korting-card-input-group input:focus {
  outline: none;
  border-color: var(--korting-focus-border);
  box-shadow: 0 0 0 3px var(--korting-focus-shadow);
}

/* ===== QUICK TOOLS ===== */
.korting-card-quick-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.quick-tool-btn {
  padding: 0.5rem 0.8rem;
  background: var(--korting-button-bg);
  border: 2px solid var(--korting-border);
  border-radius: 8px;
  color: var(--korting-text);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.quick-tool-btn:hover {
  background: var(--korting-type-btn-active-bg);
  border-color: var(--korting-type-btn-active-border);
  color: white;
  transform: translateY(-1px);
}

/* ===== ACTION BUTTONS ===== */
.korting-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.korting-card-btn {
  padding: 0.875rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.korting-card-btn-primary {
  background: var(--korting-type-btn-active-bg);
  border-color: var(--korting-type-btn-active-border);
  color: white;
  box-shadow: 0 2px 8px var(--korting-type-btn-active-shadow);
}

.korting-card-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--korting-type-btn-active-shadow);
  opacity: 0.9;
}

.korting-card-btn-secondary {
  background: var(--korting-error) !important;
  border-color: var(--korting-error-dark) !important;
  color: white !important;
}

.korting-card-btn-secondary:hover {
  background: var(--korting-error-dark) !important;
  border-color: var(--korting-error-darker) !important;
  color: white !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--korting-error-shadow) !important;
}

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

/* ===== RESULTS SECTION ===== */
.korting-card-results-section.hidden {
  display: none;
}

.korting-card-results-title {
  color: var(--korting-text);
  text-align: center;
  margin: 0 0 1rem 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.product-name-display {
  text-align: center;
  font-weight: 600;
  padding: 0.625rem;
  background: var(--korting-bg-input);
  border: 1px solid var(--korting-border);
  border-radius: 8px;
  margin-bottom: 1rem;
  display: none;
  color: var(--korting-text);
  font-size: 0.9rem;
}

.product-name-display.visible {
  display: block;
}

.korting-card-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.korting-card-result-item {
  background: var(--korting-bg-input);
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--korting-border);
  text-align: center;
}

.korting-card-result-label {
  display: block;
  font-size: 0.75rem;
  color: var(--korting-text-secondary);
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.korting-card-result-value {
  font-family: monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--korting-text);
}

.korting-card-result-value.savings {
  color: var(--korting-success);
}

.korting-card-result-value.percentage {
  color: var(--korting-type-btn-active-bg);
}

/* ===== COMPARISON BAR ===== */
.korting-card-comparison {
  background: var(--korting-bg-input);
  padding: 0.875rem;
  border-radius: 8px;
  border: 1px solid var(--korting-border);
}

.comparison-bar-container {
  height: 28px;
  background: rgba(239, 68, 68, 0.15);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 0.625rem;
  border: 1px solid var(--korting-border);
}

.comparison-bar {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--korting-success) 0%,
    var(--korting-success-dark) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.8rem;
  transition: width 0.6s ease;
}

.comparison-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--korting-text-secondary);
}

.comparison-labels strong {
  color: var(--korting-text);
}

/* ===== HISTORY SECTION ===== */
.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.history-title {
  color: var(--korting-text);
  font-size: 1rem;
  margin: 0;
  font-weight: 600;
}

.clear-history-btn {
  background: transparent;
  border: 1px solid var(--korting-border);
  color: var(--korting-text-secondary);
  cursor: pointer;
  padding: 0.375rem 0.625rem;
  border-radius: 6px;
  font-size: 0.75rem;
  transition: all 0.2s ease;
  font-weight: 500;
}

.clear-history-btn:hover {
  border-color: var(--korting-button-hover-border);
  color: var(--korting-text);
  background: var(--korting-bg-card);
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.history-empty {
  text-align: center;
  color: var(--korting-text-secondary);
  font-size: 0.85rem;
  padding: 1rem;
  font-style: italic;
}

.history-item {
  background: var(--korting-bg-input);
  padding: 0.625rem;
  border-radius: 8px;
  border: 1px solid var(--korting-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.history-item:hover {
  border-color: var(--korting-button-hover-border);
  background: var(--korting-bg-card);
  transform: translateX(2px);
}

.history-item-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.history-item-name {
  font-weight: 600;
  color: var(--korting-text);
  font-size: 0.85rem;
}

.history-item-price {
  color: var(--korting-text);
  font-family: monospace;
  font-size: 0.8rem;
}

.history-item-details {
  color: var(--korting-text-secondary);
  font-size: 0.75rem;
}

.history-item-savings {
  color: var(--korting-success);
  font-weight: 700;
  font-family: monospace;
  font-size: 0.9rem;
}

/* ===== LIGHT MODE FIXES ===== */
:root.light-mode .korting-card-results-section {
  background: #ffffff;
}

:root.light-mode .product-name-display {
  background: #f9fafb;
  border-color: #d0d7de;
}

:root.light-mode .korting-card-result-item {
  background: #f9fafb;
  border-color: #d0d7de;
}

:root.light-mode .korting-card-comparison {
  background: #f9fafb;
  border-color: #d0d7de;
}

:root.light-mode .history-item {
  background: #f9fafb;
}

:root.light-mode .history-item:hover {
  background: #ffffff;
}

:root.light-mode .comparison-bar-container {
  background: rgba(239, 68, 68, 0.08);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
  .korting-card {
    padding: 1rem;
  }

  .korting-card-title {
    font-size: 1.5rem;
  }

  .korting-card-main-layout {
    grid-template-columns: 1fr;
  }

  .korting-card-right {
    position: static;
  }

  .preset-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .korting-card-result-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .korting-card {
    padding: 1rem;
    border-radius: 12px;
  }

  .korting-card-title {
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
  }

  .korting-card-subtitle {
    font-size: 0.85rem;
    margin-bottom: 1rem;
  }

  .preset-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  .preset-btn {
    padding: 0.5rem;
  }

  .preset-icon {
    font-size: 1.25rem;
  }

  .korting-card-quick-tools {
    gap: 0.375rem;
  }

  .quick-tool-btn {
    padding: 0.4rem 0.7rem;
    font-size: 0.75rem;
  }

  .korting-card-actions {
    grid-template-columns: 1fr;
  }

  .korting-card-btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
  }
}