/* ==================================================================
   Variables
   ================================================================== */
:root {
  /* Brand Colors */
  --color-background: #ffffff;
  --color-surface: #f7f9fc;
  --color-surface-alt: #eef2f8;
  --color-text: #111827;
  --color-text-muted: #6b7280;

  --color-primary: #1f4f8f; /* dark blue */
  --color-primary-soft: #e3edff;
  --color-primary-light: #3b82f6; /* light blue accent */
  --color-primary-dark: #163763;

  --color-success: #15803d;
  --color-warning: #d97706;
  --color-danger: #b91c1c;

  --color-border-subtle: #e5e7eb;
  --color-border-strong: #cbd5f5;

  --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, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Fluid typography base (mobile-first) */
  --text-xs: 0.75rem;   /* 12px */
  --text-sm: 0.875rem;  /* 14px */
  --text-base: 1rem;    /* 16px */
  --text-lg: 1.125rem;  /* 18px */
  --text-xl: 1.25rem;   /* 20px */
  --text-2xl: 1.5rem;   /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem;  /* 36px */

  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

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

  /* Radii */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-pill: 999px;

  /* Shadows (subtle, premium look) */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 6px 18px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 200ms ease-out;
  --transition-slow: 300ms ease-out;

  /* Layout */
  --container-max-width: 1120px;
  --header-height: 64px;
}

@media (min-width: 768px) {
  :root {
    --text-2xl: 1.75rem; /* 28px */
    --text-3xl: 2.25rem; /* 36px */
    --text-4xl: 2.75rem; /* 44px */
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  margin: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* ==================================================================
   Base Styles
   ================================================================== */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

p:last-child {
  margin-bottom: 0;
}

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

h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

h4 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

h5 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--text-base);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

strong,
b {
  font-weight: 600;
}

small {
  font-size: var(--text-sm);
}

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

a:hover {
  color: var(--color-primary-light);
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-8) 0;
}

code,
pre {
  font-family: var(--font-mono);
}

pre {
  padding: var(--space-4);
  background-color: var(--gray-50);
  border-radius: var(--radius-md);
  overflow: auto;
}

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

:focus:not(:focus-visible) {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==================================================================
   Utilities
   ================================================================== */

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

.section {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

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

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

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

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

.flex-row {
  flex-direction: row;
}

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

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

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

.gap-6 {
  gap: var(--space-6);
}

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

.grid-2-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .grid-2-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.grid-3-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .grid-3-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Alignment & Text Utilities */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--color-text-muted);
}

.text-uppercase {
  text-transform: uppercase;
}

/* Spacing Utilities (subset) */
.mt-0 {
  margin-top: 0;
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mb-0 {
  margin-bottom: 0;
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

.py-4 {
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.py-6 {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.px-4 {
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

/* Screen Reader Only */
.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;
}

/* Sticky Header Helper */
.sticky-header-offset {
  scroll-margin-top: var(--header-height);
}

/* ==================================================================
   Components
   ================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 500;
  font-size: var(--text-sm);
  line-height: 1.2;
  cursor: pointer;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-border-strong);
}

.btn-outline:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary-light);
}

.btn-subtle {
  background-color: var(--gray-50);
  color: var(--color-text);
  border-color: var(--gray-200);
}

.btn-subtle:hover {
  background-color: var(--gray-100);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--text-xs);
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: var(--text-base);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

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

/* Form Elements */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.input,
select,
textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  background-color: #ffffff;
  font-size: var(--text-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-400);
}

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

textarea {
  min-height: 140px;
  resize: vertical;
}

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

.form-error {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-danger);
}

/* Cards (for comparatifs, avis, articles) */
.card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  transition:
    box-shadow var(--transition-normal),
    transform var(--transition-fast),
    border-color var(--transition-normal),
    background-color var(--transition-normal);
}

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

.card-header {
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
}

.card-meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

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

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
}

.card--highlight {
  border-color: var(--color-primary-light);
  background: linear-gradient(180deg, #ffffff 0%, #f4f6fb 100%);
}

/* Comparison Table Base Styles */
.table-comparatif {
  width: 100%;
  font-size: var(--text-sm);
}

.table-comparatif thead {
  background-color: var(--color-surface-alt);
}

.table-comparatif th,
.table-comparatif td {
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid var(--color-border-subtle);
  text-align: left;
  vertical-align: top;
}

.table-comparatif th {
  font-weight: 600;
  color: var(--color-text);
}

.table-comparatif tr:nth-child(even) td {
  background-color: var(--gray-50);
}

.table-comparatif__badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 500;
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

/* Rating Stars / Scores */
.note {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  font-weight: 600;
}

.note__score {
  font-size: var(--text-lg);
  color: var(--color-primary);
}

.note__max {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.note__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Pills for categories / tags */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  background-color: var(--gray-100);
  color: var(--gray-700);
}

.pill--primary {
  background-color: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

/* Hero / Masthead helpers */
.hero {
  padding-top: calc(var(--space-16));
  padding-bottom: var(--space-12);
  background: radial-gradient(circle at top left, #e0ebff 0, transparent 50%),
    radial-gradient(circle at bottom right, #f3f4ff 0, transparent 55%),
    #ffffff;
}

.hero__eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.hero__title {
  font-size: var(--text-3xl);
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--text-4xl);
  }
}

.hero__subtitle {
  margin-top: var(--space-3);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

/* Info Blocks for guides / analyses */
.info-block {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  padding: var(--space-4);
}

.info-block--accent {
  border-color: var(--color-primary-light);
  background-color: var(--color-primary-soft);
}

.info-block__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.info-block__meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

/* FAQ Accordions base */
.faq-item {
  border-bottom: 1px solid var(--color-border-subtle);
  padding: var(--space-3) 0;
}

.faq-item__question {
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item__answer {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Sticky Header Shell (structure only, not visual details) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: #ffffff;
  border-bottom: 1px solid rgba(209, 213, 219, 0.8);
  box-shadow: 0 1px 0 rgba(148, 163, 184, 0.15);
}

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

.site-logo {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-primary-dark);
}

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  gap: var(--space-4);
  list-style: none;
}

.site-nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-nav__link:hover {
  color: var(--color-primary-dark);
}

.site-nav__link--active {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-light);
}

.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid var(--gray-300);
}

@media (min-width: 960px) {
  .site-header__toggle {
    display: none;
  }

  .site-nav {
    display: block;
  }
}

/* Footer Shell */
.site-footer {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  background-color: #020617;
  color: #e5e7eb;
}

.site-footer a {
  color: #e5e7eb;
}

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

.site-footer__bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.5);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  font-size: var(--text-xs);
  color: #9ca3af;
}

/* Badges for "Recommandation de la rédaction" etc. */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  background-color: var(--gray-100);
  color: var(--gray-700);
  font-weight: 500;
}

.badge--editorial {
  background-color: var(--color-primary);
  color: #ffffff;
}

.badge--success {
  background-color: #dcfce7;
  color: var(--color-success);
}

.badge--warning {
  background-color: #fef3c7;
  color: var(--color-warning);
}

.badge--danger {
  background-color: #fee2e2;
  color: var(--color-danger);
}

/* Chips for pros/cons labels */
.chip {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
  background-color: var(--gray-100);
}

.chip--pro {
  background-color: #dcfce7;
  color: var(--color-success);
}

.chip--con {
  background-color: #fee2e2;
  color: var(--color-danger);
}

/* Lists for advantages / disadvantages */
.list-check,
.list-cross {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.list-check li,
.list-cross li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
}

.list-check li::before {
  content: "";
  flex-shrink: 0;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background-color: var(--color-success);
  margin-top: 0.3rem;
}

.list-cross li::before {
  content: "";
  flex-shrink: 0;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background-color: var(--color-danger);
  margin-top: 0.3rem;
}

/* Tag cloud for catégories populaires */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-cloud__item {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  background-color: var(--gray-100);
  color: var(--gray-700);
}

/* Pagination base */
.pagination {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
}

.pagination__link {
  min-width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  color: var(--gray-700);
}

.pagination__link:hover {
  border-color: var(--gray-300);
}

.pagination__link--active {
  background-color: var(--color-primary);
  color: #ffffff;
}

/* Breadcrumbs for articles & guides */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary-dark);
}

/* Article layout helpers */
.article-header {
  margin-bottom: var(--space-6);
}

.article-meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article-body {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

.article-body h2 {
  margin-top: var(--space-6);
}

.article-body h3 {
  margin-top: var(--space-4);
}

.article-body ul,
.article-body ol {
  margin-left: 1.25rem;
  margin-bottom: var(--space-4);
}

.article-body /* Callout for important editorial notes */
.callout {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: var(--text-sm);
}

.callout--warning {
  border-left-color: var(--color-warning);
  background-color: #fffbeb;
}

.callout--info {
  border-left-color: var(--color-primary-light);
  background-color: var(--color-primary-soft);
}