/*
Theme Name: Nontheme
Author: Oriento
Version: 2.0
*/

/* ==========================================================================
   1. MOTEUR MATHÉMATIQUE & DESIGN TOKENS (OKLCH, ÉCHELLE MODULAIRE & RATIOS)
   ========================================================================== */
:root,
[data-theme="light"] {
  color-scheme: light;

  /* --- Graines chromatiques OKLCH --- */
  --seed-h-primary: 255;
  --seed-h-accent:   32; /* Orange conversion haute visibilité */
  --seed-h-success: 145;
  --seed-h-warning:  75;
  --seed-h-danger:   25;
  --seed-c:         0.18;

  /* Palette Mode Clair : Contrastes renforcés WCAG AAA (> 7:1) */
  --color-bg-canvas:       oklch(99% 0.005 var(--seed-h-primary));
  --color-bg-surface:      oklch(96% 0.010 var(--seed-h-primary));
  --color-bg-surface-elev: oklch(92% 0.015 var(--seed-h-primary));
  --color-border:          oklch(84% 0.020 var(--seed-h-primary));
  --color-border-subtle:   oklch(90% 0.010 var(--seed-h-primary));
  
  --color-text-main:       oklch(15% 0.030 var(--seed-h-primary)); /* Ratio > 14:1 */
  --color-text-muted:      oklch(36% 0.025 var(--seed-h-primary)); /* Ratio > 7.2:1 (AAA) */
  --color-text-on-accent:  oklch(99% 0 0);

  /* Variantes d'action & CRO */
  --color-primary:         oklch(52% var(--seed-c) var(--seed-h-primary));
  --color-primary-hover:   oklch(44% calc(var(--seed-c) * 1.15) var(--seed-h-primary));
  --color-cta:             oklch(62% 0.22 var(--seed-h-accent));
  --color-cta-hover:       oklch(54% 0.24 var(--seed-h-accent));

  --color-success:         oklch(45% 0.18 var(--seed-h-success));
  --color-warning:         oklch(50% 0.18 var(--seed-h-warning));
  --color-danger:          oklch(50% 0.22 var(--seed-h-danger));
  --color-focus:           oklch(45% 0.22 var(--seed-h-primary));

  /* --- Échelle modulaire géométrique (Ratio 1.25) basée sur unités conteneur --- */
  --scale-ratio: 1.25;
  --step-base:   clamp(1rem, 0.85rem + 0.45cqi, 1.15rem);
  --step--2:     calc(var(--step-base) / (var(--scale-ratio) * var(--scale-ratio)));
  --step--1:     calc(var(--step-base) / var(--scale-ratio));
  --step-0:      var(--step-base);
  --step-1:      calc(var(--step-0) * var(--scale-ratio));
  --step-2:      calc(var(--step-1) * var(--scale-ratio));
  --step-3:      calc(var(--step-2) * var(--scale-ratio));
  --step-4:      calc(var(--step-3) * var(--scale-ratio));
  --step-5:      calc(var(--step-4) * var(--scale-ratio));

  /* --- Espacements fluides autocalculés --- */
  --space-unit: clamp(0.875rem, 0.65rem + 0.75cqi, 1.25rem);
  --space-3xs:  calc(var(--space-unit) * 0.125);
  --space-2xs:  calc(var(--space-unit) * 0.25);
  --space-xs:   calc(var(--space-unit) * 0.5);
  --space-sm:   calc(var(--space-unit) * 0.75);
  --space-md:   var(--space-unit);
  --space-lg:   calc(var(--space-unit) * 1.5);
  --space-xl:   calc(var(--space-unit) * 2.25);
  --space-2xl:  calc(var(--space-unit) * 3.5);

  /* --- Rayons & Élévation optique --- */
  --radius-sm:   clamp(0.25rem, 0.15rem + 0.25cqi, 0.375rem);
  --radius-md:   calc(var(--radius-sm) * var(--scale-ratio));
  --radius-lg:   calc(var(--radius-md) * var(--scale-ratio));
  --radius-full: 9999px;

  --elevation-1: 0 1px 2px oklch(0 0 0 / 0.06), 0 1px 3px oklch(0 0 0 / 0.08);
  --elevation-2: 0 4px 6px -1px oklch(0 0 0 / 0.08), 0 2px 4px -2px oklch(0 0 0 / 0.06);
  --elevation-3: 0 12px 16px -4px oklch(0 0 0 / 0.10), 0 4px 6px -2px oklch(0 0 0 / 0.05);
  --elevation-4: 0 20px 25px -5px oklch(0 0 0 / 0.12), 0 8px 10px -6px oklch(0 0 0 / 0.08);

  /* --- Ergonomie mobile, Typographie & Conteneurs --- */
  --font-sans:        system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:        ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, monospace;
  --letter-spacing:   normal;
  --word-spacing:     normal;
  --line-height-mod:  0;

  --touch-target-min: 44px;
  --header-height:    calc(var(--touch-target-min) * 1.5);
  --container-max:    clamp(20rem, 92vw, 80rem);
  --transition-fast:  0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   1B. ADAPTABILITÉ VISUELLE & CONFORT DE LECTURE (THÈMES SYSTÈME & MANUELS)
   ========================================================================== */

/* 1. Mode Sombre Auto (System Sync) & Manuel + Optimisation OLED (0% Luminance) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="sepia"]) {
    color-scheme: dark;
    --color-bg-canvas:       oklch(0% 0 0); /* Noir pur OLED Battery Saver */
    --color-bg-surface:      oklch(14% 0.015 var(--seed-h-primary));
    --color-bg-surface-elev: oklch(20% 0.020 var(--seed-h-primary));
    --color-border:          oklch(28% 0.025 var(--seed-h-primary));
    --color-border-subtle:   oklch(20% 0.018 var(--seed-h-primary));
    
    --color-text-main:       oklch(98% 0.005 var(--seed-h-primary));
    --color-text-muted:      oklch(80% 0.015 var(--seed-h-primary)); /* Ratio > 7.5:1 (AAA) */

    --color-primary:         oklch(68% var(--seed-c) var(--seed-h-primary));
    --color-primary-hover:   oklch(76% calc(var(--seed-c) * 1.1) var(--seed-h-primary));
    --color-cta:             oklch(70% 0.22 var(--seed-h-accent));
    --color-cta-hover:       oklch(78% 0.24 var(--seed-h-accent));

    --elevation-1: 0 1px 2px oklch(0 0 0 / 0.6), 0 1px 3px oklch(0 0 0 / 0.5);
    --elevation-2: 0 4px 6px -1px oklch(0 0 0 / 0.7), 0 2px 4px -2px oklch(0 0 0 / 0.5);
    --elevation-3: 0 12px 16px -4px oklch(0 0 0 / 0.8), 0 4px 6px -2px oklch(0 0 0 / 0.6);
    --elevation-4: 0 20px 25px -5px oklch(0 0 0 / 0.9), 0 8px 10px -6px oklch(0 0 0 / 0.7);
  }
}

[data-theme="dark"],
[data-theme="oled"] {
  color-scheme: dark;
  --color-bg-canvas:       oklch(0% 0 0); /* Noir pur OLED */
  --color-bg-surface:      oklch(14% 0.015 var(--seed-h-primary));
  --color-bg-surface-elev: oklch(20% 0.020 var(--seed-h-primary));
  --color-border:          oklch(28% 0.025 var(--seed-h-primary));
  --color-border-subtle:   oklch(20% 0.018 var(--seed-h-primary));
  
  --color-text-main:       oklch(98% 0.005 var(--seed-h-primary));
  --color-text-muted:      oklch(80% 0.015 var(--seed-h-primary));

  --color-primary:         oklch(68% var(--seed-c) var(--seed-h-primary));
  --color-primary-hover:   oklch(76% calc(var(--seed-c) * 1.1) var(--seed-h-primary));
  --color-cta:             oklch(70% 0.22 var(--seed-h-accent));
  --color-cta-hover:       oklch(78% 0.24 var(--seed-h-accent));
}

/* 2. Mode Sépia / Lecture Prolongée (Anti-lumière bleue) */
[data-theme="sepia"] {
  color-scheme: light;
  --seed-h-sepia:          75; /* Teinte ambrée chaude */
  --color-bg-canvas:       oklch(94% 0.035 var(--seed-h-sepia));
  --color-bg-surface:      oklch(90% 0.042 var(--seed-h-sepia));
  --color-bg-surface-elev: oklch(86% 0.048 var(--seed-h-sepia));
  --color-border:          oklch(76% 0.055 var(--seed-h-sepia));
  --color-border-subtle:   oklch(83% 0.045 var(--seed-h-sepia));

  --color-text-main:       oklch(22% 0.040 var(--seed-h-sepia)); /* Brun d'encre profond AAA */
  --color-text-muted:      oklch(38% 0.035 var(--seed-h-sepia));
  --color-primary:         oklch(45% 0.14 45);
  --color-primary-hover:   oklch(38% 0.16 45);
}

/* ==========================================================================
   1C. ADAPTABILITÉ ACCESSIBILITÉ (A11Y : CONTRASTE, DALTONISME, DYSLEXIE)
   ========================================================================== */

/* 1. Mode Contraste Élevé (Système & Manuel) */
@media (prefers-contrast: more) {
  :root {
    --color-bg-canvas:       #000000 !important;
    --color-bg-surface:      #000000 !important;
    --color-bg-surface-elev: #111111 !important;
    --color-border:          #ffffff !important;
    --color-border-subtle:   #cccccc !important;
    --color-text-main:       #ffffff !important;
    --color-text-muted:      #ffff00 !important; /* Jaune haute visibilité */
    --color-primary:         #00ffff !important; /* Cyan pur */
    --color-primary-hover:   #ffffff !important;
    --color-cta:             #ffff00 !important;
    --color-text-on-accent:  #000000 !important;
    --color-focus:           #ffff00 !important;
    --elevation-1:           none !important;
    --elevation-2:           none !important;
    --elevation-3:           none !important;
    --elevation-4:           none !important;
  }
}

[data-a11y="high-contrast"] {
  --color-bg-canvas:       #000000 !important;
  --color-bg-surface:      #000000 !important;
  --color-bg-surface-elev: #111111 !important;
  --color-border:          #ffffff !important;
  --color-border-subtle:   #cccccc !important;
  --color-text-main:       #ffffff !important;
  --color-text-muted:      #ffff00 !important;
  --color-primary:         #00ffff !important;
  --color-cta:             #ffff00 !important;
  --color-text-on-accent:  #000000 !important;
  --color-focus:           #ffff00 !important;
  --elevation-1:           none !important;
  --elevation-2:           none !important;
  --elevation-3:           none !important;
  --elevation-4:           none !important;
}

/* Support Windows High Contrast Mode (Forced Colors) */
@media (forced-colors: active) {
  *, *::before, *::after {
    forced-color-adjust: auto;
    box-shadow: none !important;
  }
  .btn, .card, input, select, textarea, table {
    border: 2px solid ButtonText !important;
  }
  :focus-visible {
    outline: 3px solid Highlight !important;
  }
}

/* 2. Mode Daltonisme (Palette Okabe-Ito universelle + Motifs distinctifs) */
[data-a11y="colorblind"] {
  --seed-h-primary: 245; /* Bleu Okabe-Ito */
  --seed-h-accent:   55; /* Orange doré Okabe-Ito */
  --seed-h-success: 215; /* Bleu ciel (évite la confusion vert/rouge) */
  --seed-h-warning:  85; /* Jaune vif */
  --seed-h-danger:   30; /* Vermillon */
  --color-success:  oklch(50% 0.16 230);
  --color-warning:  oklch(65% 0.18 85);
  --color-danger:   oklch(48% 0.20 30);
}

/* 3. Mode Police Dyslexique (OpenDyslexic + Espacements WCAG 1.4.12) */
[data-a11y="dyslexic"] {
  --font-sans:      "OpenDyslexic", "Comic Sans MS", "Andika", "Lexend", system-ui, sans-serif;
  --letter-spacing: 0.12em;
  --word-spacing:   0.16em;
  --line-height-mod: 0.45;
}

/* ==========================================================================
   1D. ADAPTABILITÉ TECHNIQUE, MATÉRIELLE & RÉSEAU (INPUT, DATA SAVER, OFFLINE)
   ========================================================================== */

/* 1. Détection fine du pointeur (Souris/Trackpad vs Écran tactile) */
@media (pointer: fine) {
  :root {
    --touch-target-min: 36px; /* Plus compact pour un pointeur de souris précis */
  }
}

@media (pointer: coarse) {
  :root {
    --touch-target-min: 48px; /* Élargi pour le confort tactile au doigt */
  }
}

/* 2. Mode Bas Débit / Économie de données (Data Saver OS ou Manuel) */
@media (prefers-reduced-data: reduce) {
  :root {
    --elevation-1: none !important;
    --elevation-2: none !important;
    --elevation-3: none !important;
    --elevation-4: none !important;
  }
  *, *::before, *::after {
    background-image: none !important;
    backdrop-filter: none !important;
    transition: none !important;
    animation: none !important;
  }
  .media-frame > video,
  iframe {
    display: none !important;
  }
}

[data-network="save-data"] *,
[data-network="save-data"] *::before,
[data-network="save-data"] *::after {
  background-image: none !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  transition: none !important;
}

/* 3. Mode Hors-ligne (PWA Offline State Indicator) */
.offline-banner {
  display: none;
  background-color: var(--color-warning);
  color: oklch(15% 0 0);
  padding: var(--space-xs) var(--space-md);
  text-align: center;
  font-weight: 700;
  font-size: var(--step--1);
}

[data-network="offline"] .offline-banner,
body.is-offline .offline-banner {
  display: block;
}

[data-network="offline"] [data-requires-online="true"],
body.is-offline [data-requires-online="true"] {
  opacity: 0.5;
  pointer-events: none;
  filter: grayscale(100%);
}

/* ==========================================================================
   1E. ADAPTABILITÉ COGNITIVE (MODE CONCENTRATION / FOCUS TDAH)
   ========================================================================== */
[data-mode="focus"] header nav,
[data-mode="focus"] footer,
[data-mode="focus"] aside,
[data-mode="focus"] .sidebar,
[data-mode="focus"] .ad-banner,
[data-mode="focus"] .comments-area,
[data-mode="focus"] .distraction,
[data-mode="focus"] .badge {
  display: none !important;
}

[data-mode="focus"] main {
  max-inline-size: 65ch;
  margin-inline: auto;
  padding-block: var(--space-2xl);
}

/* ==========================================================================
   2. RESET UNIVERSEL, INTERNATIONALISATION (RTL/LTR) & BASE
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-inline-size: 320px;
  min-block-size: 100dvh;
  /* Propriétés logiques pour les encoches mobiles */
  padding-block-start: env(safe-area-inset-top, 0);
  padding-block-end: env(safe-area-inset-bottom, 0);
  padding-inline-start: env(safe-area-inset-left, 0);
  padding-inline-end: env(safe-area-inset-right, 0);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: calc(1.35 + var(--line-height-mod) + 0.3 * (1rem / var(--step-base)));
  letter-spacing: var(--letter-spacing);
  word-spacing: var(--word-spacing);
  color: var(--color-text-main);
  background-color: var(--color-bg-canvas);
  display: flex;
  flex-direction: column;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  overflow-wrap: anywhere;
  hyphens: auto;
}

/* Skip-link 100% compatible RTL/LTR grâce à inset-inline-start */
.skip-link {
  position: absolute;
  inset-block-start: var(--space-xs);
  inset-inline-start: var(--space-xs);
  z-index: 1000;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-cta);
  color: var(--color-text-on-accent);
  font-weight: 700;
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
  text-decoration: none;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* Utilitaires Screen Readers (Accessibilité Non-Visuelle) */
.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Gestion du Focus Clavier Visible & Navigation 100% Clavier */
:focus {
  outline: none;
}

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

/* Menus déroulants accessibles 100% au clavier via :focus-within */
nav li:focus-within > ul,
.dropdown:focus-within .dropdown-menu {
  display: block;
  opacity: 1;
  visibility: visible;
}

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

[data-a11y="reduced-motion"] *,
[data-a11y="reduced-motion"] *::before,
[data-a11y="reduced-motion"] *::after {
  animation-duration: 0.01ms !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

/* ==========================================================================
   3. OPTIMISATION MÉDIAS, RTL & CLS ZERO (CORE WEB VITALS)
   ========================================================================== */
img, svg, video, iframe, canvas {
  max-inline-size: 100%;
  block-size: auto;
  display: block;
}

/* Inversion automatique des icônes directionnelles en mode RTL (Arabe, Hébreu, Persan) */
[dir="rtl"] .icon-directional,
:dir(rtl) .icon-directional {
  transform: scaleX(-1);
}

/* Réservation d'espace automatique pour éviter tout saut de page (CLS = 0) */
.media-frame {
  position: relative;
  inline-size: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-bg-surface-elev);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.media-frame > img,
.media-frame > video {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
}

/* Optimisation de rendu du thread principal pour les sections longues */
section, article {
  content-visibility: auto;
  contain-intrinsic-size: 1px 400px;
}

/* ==========================================================================
   4. STRUCTURE DE MISE EN PAGE & CONTENEURS AUTO-GÉRÉS
   ========================================================================== */
.container {
  inline-size: 100%;
  max-inline-size: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
  container-type: inline-size;
}

.auto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, max(240px, 32cqi)), 1fr));
  gap: var(--space-md);
}

.auto-flex {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* ==========================================================================
   5. TYPOGRAPHIE, LOCALISATION & SEO ANCHOR-FIX
   ========================================================================== */
h1, h2, h3, h4, h5, h6, [id] {
  scroll-margin-block-start: calc(var(--header-height) + var(--space-md));
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-main);
  font-weight: 700;
  text-wrap: balance;
}

h1 { font-size: var(--step-5); line-height: 1.1; margin-block-end: var(--space-md); }
h2 { font-size: var(--step-4); line-height: 1.15; margin-block-end: var(--space-sm); }
h3 { font-size: var(--step-3); line-height: 1.2; margin-block-end: var(--space-xs); }
h4 { font-size: var(--step-2); line-height: 1.25; margin-block-end: var(--space-xs); }
h5 { font-size: var(--step-1); line-height: 1.3; margin-block-end: var(--space-2xs); }
h6 { font-size: var(--step-0); line-height: 1.35; margin-block-end: var(--space-2xs); }

p, ul, ol, dl, blockquote, pre, figure {
  margin-block-end: var(--space-md);
}

p {
  max-inline-size: 68ch;
  color: var(--color-text-main);
  text-wrap: pretty;
}

small {
  font-size: var(--step--1);
  color: var(--color-text-muted);
}

blockquote {
  padding-inline-start: var(--space-md);
  border-inline-start: 4px solid var(--color-primary);
  color: var(--color-text-muted);
  font-style: italic;
}

/* Guillemets typographiques localisés automatiquement selon la langue (lang="") */
:lang(fr) q { quotes: "«\00a0" "\00a0»" "‹\00a0" "\00a0›"; }
:lang(en) q { quotes: "“" "”" "‘" "’"; }
:lang(de) q { quotes: "„" "“" "‚" "‘"; }
:lang(ar) q { quotes: "«" "»" "‹" "›"; }

/* Formatage tabulaire des nombres, dates, prix et devises pour l'alignement localisé */
time,
data,
.localized-number,
.localized-currency,
.localized-unit,
.price,
td[data-type="numeric"] {
  font-variant-numeric: tabular-nums;
}

/* Support CSS d'injection de symbole monétaire ou d'unité locale via attributs HTML */
[data-currency]::before {
  content: attr(data-currency) "\00a0";
}

[data-unit]::after {
  content: "\00a0" attr(data-unit);
}

code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-size: var(--step--1);
}

code, kbd {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3xs) var(--space-2xs);
}

pre {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  overflow-x: auto;
}

/* ==========================================================================
   6. TABLEAUX RESPONSIVES 100% COMPATIBLES RTL/LTR
   ========================================================================== */
.table-container {
  inline-size: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-block-end: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

table {
  inline-size: 100%;
  border-collapse: collapse;
  text-align: start; /* S'inverse automatiquement en RTL (Arabe/Hébreu) */
}

th, td {
  padding: var(--space-sm) var(--space-md);
  border-block-end: 1px solid var(--color-border-subtle);
  white-space: nowrap;
}

th {
  background-color: var(--color-bg-surface-elev);
  font-weight: 700;
  font-size: var(--step--1);
}

tbody tr:hover {
  background-color: var(--color-bg-surface);
}

/* ==========================================================================
   7. FORMULAIRES MOBILES HAUTE CONVERSION & DALTONISME-FRIENDLY
   ========================================================================== */
form {
  display: grid;
  gap: var(--space-md);
}

label {
  display: block;
  font-size: var(--step--1);
  font-weight: 600;
  margin-block-end: var(--space-2xs);
}

input, select, textarea {
  font: inherit;
  color: inherit;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  min-block-size: var(--touch-target-min);
  inline-size: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Feedback multi-sensoriel (Couleur + Style de trait pour daltoniens) */
input:user-valid, select:user-valid, textarea:user-valid {
  border-color: var(--color-success);
  border-width: 2px;
  border-style: solid;
}

input:user-invalid, select:user-invalid, textarea:user-invalid {
  border-color: var(--color-danger);
  border-width: 2px;
  border-style: dashed; /* Différenciation non-chromatique pour le daltonisme */
}

input[type="checkbox"], input[type="radio"] {
  appearance: none;
  inline-size: calc(var(--step-0) * 1.35);
  block-size: calc(var(--step-0) * 1.35);
  min-inline-size: calc(var(--step-0) * 1.35);
  min-block-size: calc(var(--step-0) * 1.35);
  display: inline-grid;
  place-content: center;
  cursor: pointer;
  margin-inline-end: var(--space-xs);
  vertical-align: middle;
}

input[type="radio"] { border-radius: var(--radius-full); }

input[type="checkbox"]::before, input[type="radio"]::before {
  content: "";
  inline-size: calc(var(--step-0) * 0.65);
  block-size: calc(var(--step-0) * 0.65);
  transform: scale(0);
  background-color: var(--color-primary);
  transition: transform var(--transition-fast);
}

input[type="checkbox"]::before {
  clip-path: polygon(14% 44%, 0 61%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

input[type="radio"]::before {
  border-radius: var(--radius-full);
}

input[type="checkbox"]:checked::before,
input[type="radio"]:checked::before {
  transform: scale(1);
}

/* ==========================================================================
   8. ALERTES DALTONISME-FRIENDLY (ICÔNES + BORDURES DISTINCTIVES)
   ========================================================================== */
.alert {
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  border-inline-start-width: 6px;
  background-color: var(--color-bg-surface);
  margin-block-end: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.alert-success {
  border-inline-start-color: var(--color-success);
  border-inline-start-style: solid;
}
.alert-success::before {
  content: "✓";
  font-weight: 800;
  color: var(--color-success);
}

.alert-warning {
  border-inline-start-color: var(--color-warning);
  border-inline-start-style: double;
}
.alert-warning::before {
  content: "⚠";
  font-weight: 800;
  color: var(--color-warning);
}

.alert-danger {
  border-inline-start-color: var(--color-danger);
  border-inline-start-style: dashed;
}
.alert-danger::before {
  content: "✕";
  font-weight: 800;
  color: var(--color-danger);
}

/* ==========================================================================
   9. COMPOSANTS DE CONVERSION & HIÉRARCHIE CRO (.btn-cta, .pricing, .badge)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  min-inline-size: var(--touch-target-min);
  min-block-size: var(--touch-target-min);
  padding: var(--space-xs) var(--space-lg);
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  box-shadow: var(--elevation-1);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-accent);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--elevation-2);
}

.btn-cta {
  background-color: var(--color-cta);
  color: var(--color-text-on-accent);
  font-weight: 700;
  box-shadow: var(--elevation-2);
}

.btn-cta:hover {
  background-color: var(--color-cta-hover);
  box-shadow: var(--elevation-3);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-bg-surface-elev);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-bg-surface);
  border-color: var(--color-primary);
}

.card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--elevation-1);
}

.card-pricing {
  position: relative;
  border: 2px solid var(--color-primary);
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: var(--elevation-2);
}

.price {
  font-size: var(--step-4);
  font-weight: 800;
  line-height: 1;
  color: var(--color-text-main);
}

.badge {
  display: inline-block;
  padding: var(--space-3xs) var(--space-xs);
  font-size: var(--step--2);
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-surface-elev);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.badge-featured {
  background-color: var(--color-cta);
  color: var(--color-text-on-accent);
  border: none;
}

/* ==========================================================================
   10. STRUCTURE MACRO (HEADER, NAV, MAIN, FOOTER)
   ========================================================================== */
header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  block-size: var(--header-height);
  background-color: var(--color-bg-canvas);
  border-block-end: 1px solid var(--color-border);
  box-shadow: var(--elevation-1);
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  block-size: 100%;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-sm);
  margin-block-end: 0;
}

nav a {
  display: inline-flex;
  align-items: center;
  min-block-size: var(--touch-target-min);
  padding-inline: var(--space-xs);
  text-decoration: none;
  color: var(--color-text-main);
  font-weight: 500;
}

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

main {
  flex: 1;
  padding-block: var(--space-xl);
}

footer {
  border-block-start: 1px solid var(--color-border);
  padding-block: var(--space-xl);
  background-color: var(--color-bg-surface);
  margin-block-start: auto;
}

/* ==========================================================================
   11. STYLE D'IMPRESSION (100% LIGHTHOUSE COMPATIBLE)
   ========================================================================== */
@media print {
  body {
    background: transparent !important;
    color: #000000 !important;
    font-size: 12pt;
    line-height: 1.4;
  }
  header, footer, nav, button, .btn, .skip-link, .offline-banner, dialog {
    display: none !important;
  }
  .card, .card-pricing, table, pre, blockquote {
    box-shadow: none !important;
    border: 1px solid #cccccc !important;
    break-inside: avoid;
  }
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 80%;
  }
}