/* ============================================
   Design Tokens
   ============================================ */

:root {
  /* Primary: Deep Navy (Finday-inspired) */
  --color-primary:        #1B2A4A;
  --color-primary-dark:   #111C36;
  --color-primary-light:  #E8EDF5;
  --color-primary-alpha:  rgba(27, 42, 74, 0.08);

  /* Accent: Vibrant Cyan (Finday-inspired) */
  --color-accent:         #00B4D8;
  --color-accent-dark:    #0096B7;
  --color-accent-light:   #E0F7FC;

  /* CTA: Warm Orange */
  --color-cta:            #F59E0B;
  --color-cta-dark:       #D97706;

  /* Success / Winner */
  --color-success:        #059669;
  --color-success-light:  #D1FAE5;
  --color-success-dark:   #065F46;

  /* Warning */
  --color-warning:        #D97706;
  --color-warning-light:  #FEF3C7;

  /* Error */
  --color-error:          #DC2626;
  --color-error-light:    #FEE2E2;

  /* Neutrals */
  --color-bg:             #F5F7FA;
  --color-bg-alt:         #EDF0F5;
  --color-white:          #FFFFFF;
  --color-text:           #1B2A4A;
  --color-text-light:     #5A6A85;
  --color-border:         #DDE3ED;
  --color-border-strong:  #C1CADB;

  /* Gradients */
  --gradient-header:      linear-gradient(135deg, #1B2A4A 0%, #2D4373 100%);
  --gradient-hero:        linear-gradient(160deg, #F5F7FA 0%, #E8EDF5 50%, #E0F7FC 100%);
  --gradient-winner:      linear-gradient(135deg, #D1FAE5 0%, #E0F7FC 100%);
  --gradient-accent:      linear-gradient(135deg, #00B4D8 0%, #0096B7 100%);

  /* Shadows */
  --shadow-sm:  0 1px 2px rgba(27, 42, 74, 0.05);
  --shadow:     0 1px 3px rgba(27, 42, 74, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md:  0 4px 12px rgba(27, 42, 74, 0.08);
  --shadow-lg:  0 8px 24px rgba(27, 42, 74, 0.10);

  /* Radii */
  --radius:     10px;
  --radius-lg:  16px;
  --radius-sm:  6px;

  --font-family: 'Inter', system-ui, sans-serif;
  --font-size-base: 15px;
  --max-width: 1200px;
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* ============================================
   Loan Warning Banner
   ============================================ */

.loan-warning {
  background: var(--color-white);
  text-align: center;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

.loan-warning img {
  height: 21px;
  width: auto;
}

/* ============================================
   Header
   ============================================ */

header {
  background: var(--gradient-header);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(27, 42, 74, 0.20);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.25rem;
}

header nav .logo {
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.01em;
}

header nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

header nav a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.87rem;
  font-weight: 500;
  transition: color 0.15s;
}

header nav ul a:hover {
  color: var(--color-white);
}

/* ============================================
   Hero
   ============================================ */

#hero {
  background: var(--gradient-hero);
  border-bottom: 1px solid var(--color-border);
  padding: 3rem 1.5rem;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.hero-content {
  text-align: center;
}

#hero h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

#hero p {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.hero-features {
  list-style: none;
  margin-bottom: 1.5rem;
  text-align: left;
  display: inline-block;
}

.hero-features li {
  font-size: 0.9rem;
  color: var(--color-text);
  padding: 0.3rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.hero-features li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.hero-cta {
  display: inline-block;
  background: var(--gradient-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 4px 12px rgba(0, 180, 216, 0.25);
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 180, 216, 0.35);
}

.hero-car {
  max-width: 480px;
  width: 100%;
}

.hero-car img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  -webkit-mask-image: linear-gradient(to left, black 50%, transparent 95%);
  mask-image: linear-gradient(to left, black 50%, transparent 95%);
}

@media (min-width: 768px) {
  #hero {
    padding: 4rem 2rem;
  }

  .hero-inner {
    flex-direction: row;
    gap: 3rem;
    align-items: center;
  }

  .hero-car {
    flex: 1;
    max-width: 480px;
  }

  .hero-content {
    flex: 1;
    text-align: left;
  }

  #hero h1 {
    font-size: 2.25rem;
  }
}

/* ============================================
   Section Headers
   ============================================ */

.section-header {
  text-align: center;
  margin-bottom: 1.75rem;
  position: relative;
  padding-bottom: 1rem;
}

.section-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.section-header p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* ============================================
   Calculator Layout
   ============================================ */

#calculator {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 2rem;
}

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

@media (min-width: 960px) {
  .calc-layout {
    grid-template-columns: 1fr 400px;
  }
}

/* ============================================
   Calculator Form — Compact
   ============================================ */

.calculator-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  transition: box-shadow 0.2s ease;
}

.calculator-form:hover {
  box-shadow: var(--shadow-lg);
}

.calculator-form h2 {
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  padding-left: 0.75rem;
  border-left: 3px solid var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Kenteken lookup */

.kenteken-row {
  margin-bottom: 0.5rem;
}

.kenteken-group {
  max-width: none;
}

.label-hint {
  font-weight: 400;
  color: var(--color-border-strong);
  font-style: italic;
}

.kenteken-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.kenteken-input-wrap input {
  flex: 0 0 160px;
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  font-family: var(--font-family);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.kenteken-input-wrap input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha);
}

.kenteken-input-wrap input::placeholder {
  text-transform: none;
  letter-spacing: normal;
  color: #bbb;
}

.kenteken-input-wrap button {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-family);
  background: var(--gradient-accent);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: opacity 0.15s;
}

.kenteken-input-wrap button:hover {
  opacity: 0.9;
}

.kenteken-input-wrap button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.kenteken-status {
  font-size: 0.78rem;
  white-space: nowrap;
}

.kenteken-status.status-loading {
  color: var(--color-text-light);
}

.kenteken-status.status-success {
  color: var(--color-success);
}

.kenteken-status.status-error {
  color: var(--color-error);
}

.form-group {
  margin-bottom: 0.5rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 0.2rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  font-family: var(--font-family);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha);
}

.form-group input::placeholder {
  color: #bbb;
}

.form-row {
  display: flex;
  gap: 0.75rem;
}

.form-row .form-group {
  flex: 1;
  min-width: 0;
}

.form-row-3 .form-group {
  flex: 1;
}

/* Inline validation errors */

.field-error {
  display: block;
  font-size: 0.73rem;
  color: var(--color-error);
  min-height: 0;
}

.field-error:empty {
  display: none;
}

.form-group input.invalid,
.form-group select.invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

/* Range slider */

.form-group input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  border-radius: 3px;
  outline: none;
  border: none;
  padding: 0;
  margin-top: 0.35rem;
}

.form-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s;
}

.form-group input[type="range"]::-webkit-slider-thumb:hover {
  border-color: var(--color-accent);
}

.form-group input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.form-group input[type="range"]:focus {
  box-shadow: none;
}

.range-value {
  font-size: 0.78rem;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-top: 0.15rem;
}

/* Readonly input */

.form-group input[readonly] {
  background-color: var(--color-bg-alt);
  color: var(--color-text-light);
  cursor: default;
}

/* Checkbox */

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-light);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-primary);
}

/* Km warning */

.km-warning {
  background-color: var(--color-warning-light);
  border-left: 3px solid var(--color-warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.5rem 0.75rem;
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

.km-warning strong {
  color: var(--color-warning);
}

/* ============================================
   Sticky Result Card
   ============================================ */

.calc-result-col {
  position: relative;
}

.result-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
}

@media (min-width: 960px) {
  .result-card {
    position: sticky;
    top: 4.25rem;
    max-height: calc(100vh - 5rem);
    overflow-y: auto;
  }
}

.result-card-placeholder {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.result-card-content h3 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
  margin: 1rem 0 0.4rem;
}

.result-card-content h3:first-of-type {
  margin-top: 0.5rem;
}

/* ============================================
   Result Tables — Compact
   ============================================ */

.result-table-compact {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  table-layout: fixed;
}

.result-table-compact col.col-label { width: 40%; }
.result-table-compact col.col-lening { width: 30%; }
.result-table-compact col.col-lease { width: 30%; }

.result-table-compact thead th {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  text-align: right;
  padding: 0.35rem 0.5rem;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.result-table-compact thead th:first-child {
  text-align: left;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.result-table-compact thead th:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.result-table-compact tbody td {
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid var(--color-bg);
  text-align: right;
}

.result-table-compact tbody td:first-child {
  text-align: left;
  color: var(--color-text-light);
  font-weight: 500;
}

.result-table-compact tbody tr:last-child td {
  border-bottom: none;
}

/* Summary rows */

.result-table-compact .row-bruto td {
  border-top: 1.5px solid var(--color-border-strong);
  font-weight: 600;
}

.result-table-compact .row-restwaarde td {
  font-style: italic;
  color: var(--color-text-light);
}

.result-table-compact .row-netto td {
  border-top: 2px solid var(--color-primary);
  font-weight: 700;
  font-size: 0.87rem;
  padding-top: 0.4rem;
}

/* Winner column highlighting */

.result-table-compact[data-winner="lening"] th:nth-child(2),
.result-table-compact[data-winner="lening"] td:nth-child(2) {
  background-color: rgba(5, 150, 105, 0.06);
}

.result-table-compact[data-winner="lease"] th:nth-child(3),
.result-table-compact[data-winner="lease"] td:nth-child(3) {
  background-color: rgba(5, 150, 105, 0.06);
}

/* Winner header: arrow + green accent */
.result-table-compact[data-winner="lening"] th:nth-child(2),
.result-table-compact[data-winner="lease"] th:nth-child(3) {
  background-color: var(--color-success-light);
  color: var(--color-success-dark);
  position: relative;
}

.result-table-compact[data-winner="lening"] th:nth-child(2)::after,
.result-table-compact[data-winner="lease"] th:nth-child(3)::after {
  content: " \2713";
  font-size: 0.7rem;
}

/* Winner netto row cell */
.cell-winner {
  color: var(--color-success-dark) !important;
  font-weight: 700;
  background-color: var(--color-success-light) !important;
}

.cell-loser {
  color: var(--color-text-light) !important;
}

/* Inbegrepen styling */

.inbegrepen {
  color: var(--color-border-strong);
  font-style: italic;
  font-size: 0.75rem;
}

/* Conclusieblok */

.conclusie-blok {
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  background-color: var(--color-bg-alt);
  color: var(--color-text-light);
}

.conclusie-winner {
  background: var(--gradient-winner);
  border: 1.5px solid var(--color-success);
  color: var(--color-success-dark);
}

/* Restwaarde visual bar */

.restwaarde-visual {
  margin-top: 0.4rem;
  background: var(--color-accent-light);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
}

.restwaarde-bar-track {
  width: 100%;
  height: 1rem;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 0.5rem;
  overflow: hidden;
  border: 1px solid rgba(0, 180, 216, 0.2);
}

.restwaarde-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  border-radius: 0.5rem;
  transition: width 0.4s ease;
  min-width: 0;
}

.restwaarde-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 0.3rem;
  color: var(--color-accent-dark);
}

.restwaarde-uitleg {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.45;
  margin-top: 0.35rem;
}

/* ============================================
   Context Section
   ============================================ */

.context-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 1rem;
  border-top: 1px solid var(--color-border);
}

.context-blok {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.83rem;
  color: var(--color-text-light);
}

.context-blok h3 {
  display: none;
}

.context-blok ul {
  padding-left: 1.25rem;
}

.context-blok li {
  margin-bottom: 0.2rem;
}

/* ============================================
   FAQ
   ============================================ */

#faq {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 1rem;
  border-top: 1px solid var(--color-border);
}

#faq details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  background: #fff;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

#faq details[open] {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

#faq summary {
  padding: 0.75rem 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#faq summary::before {
  content: "▸";
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

#faq details[open] summary::before {
  transform: rotate(90deg);
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq details p {
  margin: 0 1rem 0.75rem 1.75rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* ============================================
   Footer
   ============================================ */

footer {
  background: var(--gradient-header);
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  padding: 1.5rem 1rem;
  margin-top: 2rem;
  font-size: 0.8rem;
}

/* ============================================
   Utility
   ============================================ */

.hidden {
  display: none !important;
}

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

@media (max-width: 959px) {
  .form-row-3 {
    flex-wrap: wrap;
  }

  .form-row-3 .form-group {
    flex-basis: calc(50% - 0.375rem);
  }

  .result-card {
    box-shadow: var(--shadow-md);
  }

  .result-card::before {
    display: none;
  }
}

@media (max-width: 500px) {
  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .form-row-3 .form-group {
    flex-basis: 100%;
  }
}