/* ===========================================================
   Variables
   =========================================================== */
:root {
  /* Color Palette - Automotive, professional */
  --color-background: #070b10; /* deep slate / garage-like */
  --color-surface: #0f141b;
  --color-surface-elevated: #161d26;

  --color-text: #f5f7fa;
  --color-text-muted: #a1a8b3;

  --color-primary: #0f8fff; /* modern automotive blue */
  --color-primary-soft: rgba(15, 143, 255, 0.12);

  --color-success: #34c759;
  --color-warning: #ffb020;
  --color-danger: #ff3b30;

  --color-border-subtle: #252b36;
  --color-border-strong: #343b48;

  /* Neutral Grays (for subtle elements and light sections) */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif,
    'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol',
    'Noto Color Emoji';

  --font-heading: 'Montserrat', system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */
  --font-size-5xl: 3rem;     /* 48px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing Scale (0–96px) */
  --space-0: 0;
  --space-1: 0.125rem;  /* 2px */
  --space-2: 0.25rem;   /* 4px */
  --space-3: 0.375rem;  /* 6px */
  --space-4: 0.5rem;    /* 8px */
  --space-5: 0.625rem;  /* 10px */
  --space-6: 0.75rem;   /* 12px */
  --space-8: 1rem;      /* 16px */
  --space-10: 1.25rem;  /* 20px */
  --space-12: 1.5rem;   /* 24px */
  --space-16: 2rem;     /* 32px */
  --space-20: 2.5rem;   /* 40px */
  --space-24: 3rem;     /* 48px */
  --space-32: 4rem;     /* 64px */
  --space-40: 5rem;     /* 80px */
  --space-48: 6rem;     /* 96px */

  /* Radius */
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-full: 9999px;

  /* Shadows - crisp & technical */
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 18px 45px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 260ms ease-out;

  /* Layout */
  --container-max-width: 1120px;
}

/* ===========================================================
   Reset / Normalize
   =========================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote,
dl, dd {
  margin: 0;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

button {
  border: none;
  padding: 0;
  background: none;
}

/* Remove default focus outlines (we'll re-add with :focus-visible) */
:focus {
  outline: none;
}

/* ===========================================================
   Base Styles
   =========================================================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--color-background);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
  letter-spacing: 0.02em;
  margin-bottom: var(--space-12);
}

h2 {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  margin-bottom: var(--space-8);
}

h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-6);
}

h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

p {
  margin-bottom: var(--space-8);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: #42a7ff;
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-16) 0;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    'Liberation Mono', 'Courier New', monospace;
}

/* ===========================================================
   Accessibility & Motion
   =========================================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Screen-reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===========================================================
   Layout Utilities
   =========================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

@media (max-width: 640px) {
  .container {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }
}

/* Flex Helpers */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.flex-wrap {
  flex-wrap: wrap;
}

.gap-4 {
  gap: var(--space-4);
}

.gap-8 {
  gap: var(--space-8);
}

.gap-12 {
  gap: var(--space-12);
}

.gap-16 {
  gap: var(--space-16);
}

/* Grid Helpers */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-16);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

@media (max-width: 960px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Spacing Utilities (common) */
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mt-24 { margin-top: var(--space-24); }

.mb-0 { margin-bottom: 0; }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-24 { margin-bottom: var(--space-24); }

.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.py-24 {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.section-light {
  background-color: var(--gray-900);
}

.section-dark {
  background-color: var(--color-background);
}

/* ===========================================================
   Form & Interactive Components
   =========================================================== */
/* Buttons - primary, secondary, ghost */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #0f8fff, #0054ff);
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(15, 143, 255, 0.45);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(15, 143, 255, 0.55);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 18px rgba(15, 143, 255, 0.4);
}

.btn-secondary {
  background-color: var(--color-surface-elevated);
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  background-color: #1d2531;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border-subtle);
}

.btn-ghost:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.btn[disabled],
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

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

/* Inputs & Textareas */
.input,
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: #080c12;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-fast),
    background-color var(--transition-base);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-500);
}

.input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-soft);
  outline: none;
}

.input[disabled],
select[disabled],
textarea[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

label {
  display: block;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* ===========================================================
   Card & Surface Components
   =========================================================== */
.card {
  background: radial-gradient(circle at top left, #17202d 0, #0e141d 45%, #05080d 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-md);
}

.card--hoverable {
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.card--hoverable:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15, 143, 255, 0.4);
}

.card-header {
  margin-bottom: var(--space-8);
}

.card-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card-body {
  font-size: var(--font-size-sm);
}

/* ===========================================================
   Media Helpers (for automotive visuals)
   =========================================================== */
.media-frame {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-subtle);
}

.media-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.media-aspect-16x9 {
  width: 100%;
}

.media-aspect-16x9 > * {
  width: 100%;
  height: auto;
}

/* ===========================================================
   Tag / Badge (for service types: installatie, diagnose, etc.)
   =========================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  background-color: rgba(255, 255, 255, 0.02);
}

.badge--primary {
  border-color: rgba(15, 143, 255, 0.6);
  color: #d4e9ff;
  background-color: rgba(15, 143, 255, 0.12);
}

.badge--success {
  border-color: rgba(52, 199, 89, 0.6);
  color: #e3ffeb;
  background-color: rgba(52, 199, 89, 0.15);
}

/* ===========================================================
   Utility Text & Alignment
   =========================================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }

.uppercase { text-transform: uppercase; }

/* Emphasized numeric data (e.g., keuringsrapport, diagnosetijd) */
.stat-value {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  line-height: var(--line-height-tight);
}

.stat-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

/* ===========================================================
   Navigation Shell (basic, optional)
   =========================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(7, 11, 16, 0.96), rgba(7, 11, 16, 0.82));
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-8) 0;
}

.site-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.25rem 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #0f8fff, #00ffd0);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--color-text);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link--active {
  color: var(--color-text);
}

.nav-link--active::after {
  width: 100%;
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* to be replaced by mobile menu implementation */
  }

  .btn {
    white-space: normal;
    word-break: break-word;
    overflow-wrap: break-word;
    padding: 0.6rem 1.2rem;
  }
}

/* ===========================================================
   Hero-like Section Helpers (for homepage)
   =========================================================== */
.hero {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.hero-kicker {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-5xl));
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-8);
}

.hero-subtitle {
  max-width: 26rem;
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
}

.hero-cta-group {
  margin-top: var(--space-16);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.hero-meta {
  margin-top: var(--space-16);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ===========================================================
   Footer Shell (basic, optional)
   =========================================================== */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background-color: #05070b;
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.site-footer a {
  color: inherit;
}

.site-footer a:hover {
  color: var(--color-primary);
}