/* ============================================
   Volvo Test Drive — Landing Page
   Flat, minimal, scandinave. Noir / blanc / gris.
   ============================================ */

:root {
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray-bg: #f5f5f5;
  --color-gray-border: #e0e0e0;
  --color-gray-text: #5c5c5c;
  --color-accent: #16428c;
  --color-error: #b3261e;

  --font-base: "Inter", "Helvetica Neue", Helvetica, Arial, system-ui, -apple-system, sans-serif;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;

  --max-width: 1120px;
  --radius: 2px;
  --transition: 180ms ease;
  --header-height: 64px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-weight: 500;
  line-height: 1.25;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(28px, 5vw, 44px); }
h2 { font-size: clamp(22px, 3.4vw, 30px); }
h3 { font-size: 18px; }

p {
  margin: 0 0 var(--space-sm);
  color: var(--color-black);
}

a {
  color: inherit;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-black);
  color: var(--color-white);
  padding: 10px 16px;
  z-index: 1000;
}
.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-base);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--color-black);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  min-height: 48px;
}

.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
}
.btn-primary:hover {
  background: #262626;
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-black);
}
.btn-secondary:hover {
  background: var(--color-gray-bg);
}

.btn-small {
  padding: 10px 18px;
  font-size: 13px;
  min-height: 40px;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-decoration: none;
}

/* ---------- Media placeholders ---------- */

.media-frame {
  position: relative;
  display: block;
  background: var(--color-gray-bg);
  overflow: hidden;
}

.media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame img[src$="ex30-hero.jpg"] {
  object-position: 100% center;
}

.media-frame img[src$="ex30-rear-hero.jpg"] {
  object-position: center 75%;
}

.media-frame::before {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #9a9a9a;
  opacity: 0;
  pointer-events: none;
}

.media-frame.broken::before {
  opacity: 1;
}

/* ---------- Hero ---------- */

.hero {
  display: flex;
  flex-direction: column;
}

.hero-media {
  aspect-ratio: 16 / 10;
  width: 100%;
}

.hero-content {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
  max-width: 640px;
}

.hero-subtitle {
  color: var(--color-gray-text);
  font-size: 17px;
}

/* ---------- Sections ---------- */

.section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.models {
  background: var(--color-white);
}

.why {
  background: var(--color-gray-bg);
}

.reservation {
  background: var(--color-white);
}

#reservation {
  scroll-margin-top: var(--header-height);
}

/* ---------- Model selection ---------- */

.model-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.model-card {
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--color-white);
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius);
  padding: 0;
  cursor: pointer;
  font-family: var(--font-base);
  overflow: hidden;
  transition: border-color var(--transition);
}

.model-card:hover {
  border-color: var(--color-black);
}

.model-card[aria-pressed="true"] {
  border-color: var(--color-black);
  border-width: 2px;
}

.model-card-media {
  aspect-ratio: 4 / 3;
  width: 100%;
}

.model-card-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm);
}

.model-name {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.model-desc {
  font-size: 14px;
  color: var(--color-gray-text);
}

/* ---------- Why try ---------- */

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.why-item p {
  color: var(--color-gray-text);
  font-size: 15px;
}

/* ---------- Form ---------- */

#form-wrapper {
  max-width: 560px;
  margin: 0 auto;
}

.progress-track {
  width: 100%;
  height: 2px;
  background: var(--color-gray-border);
  margin-top: var(--space-lg);
}

.progress-fill {
  height: 100%;
  width: 50%;
  background: var(--color-black);
  transition: width 260ms ease;
}

.step-indicator {
  font-size: 13px;
  color: var(--color-gray-text);
  margin-top: var(--space-xs);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.form-step {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-step[hidden] {
  display: none;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label,
.field-label {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field input[type="date"],
.field select {
  font-family: var(--font-base);
  font-size: 16px;
  padding: 13px 14px;
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius);
  background: var(--color-white);
  color: var(--color-black);
  min-height: 48px;
  transition: border-color var(--transition);
}

.field input:focus,
.field select:focus {
  border-color: var(--color-black);
}

.field input[aria-invalid="true"],
.field .pill-group[data-invalid="true"] {
  border-color: var(--color-error);
}

.field-error {
  font-size: 13px;
  color: var(--color-error);
  min-height: 16px;
}

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.pill {
  position: relative;
}

.pill input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.pill span {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid var(--color-gray-border);
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.pill input:checked + span {
  background: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

.pill input:focus-visible + span {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.step-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-sm);
}

.step-actions-split {
  justify-content: space-between;
}

@media (max-width: 420px) {
  .step-actions-split {
    flex-direction: column;
    gap: var(--space-sm);
  }
  .step-actions-split .btn {
    width: 100%;
  }
}

/* ---------- Confirmation ---------- */

.confirmation {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.confirmation-icon {
  margin-bottom: var(--space-sm);
}

.confirmation-message {
  color: var(--color-gray-text);
}

.confirmation-summary {
  text-align: left;
  border-top: 1px solid var(--color-gray-border);
  border-bottom: 1px solid var(--color-gray-border);
  padding: var(--space-md) 0;
  margin: var(--space-md) 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px var(--space-md);
}

.confirmation-summary dt {
  font-size: 13px;
  color: var(--color-gray-text);
}

.confirmation-summary dd {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  text-align: right;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-xl) 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.logo-footer {
  color: var(--color-white);
}

.site-footer address {
  font-style: normal;
  font-size: 14px;
  color: #cccccc;
  line-height: 1.6;
}

.site-footer address a {
  color: #ffffff;
  text-decoration: underline;
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-links a {
  color: var(--color-white);
  display: inline-flex;
  transition: opacity var(--transition);
}

.social-links a:hover {
  opacity: 0.6;
}

.footer-copy {
  font-size: 12px;
  color: #888888;
  margin-top: var(--space-sm);
}

/* ---------- Fade-in on scroll ---------- */

.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Responsive: tablet / desktop ---------- */

@media (min-width: 640px) {
  .model-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .why-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .hero {
    flex-direction: row-reverse;
    align-items: stretch;
  }
  .hero-media {
    width: 50%;
    aspect-ratio: auto;
  }
  .hero-content {
    width: 50%;
    max-width: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: var(--space-2xl);
    padding-right: var(--space-lg);
  }
}