:root {
  /* Palette: prune nocturne, cuivre et sauge */
  --color-obsidian: #140f1c;
  --color-graphite: #211827;
  --color-champagne-gold: #d09368;
  --color-velvet-emerald: #6f8a71;
  --color-midnight-blue: #65738f;
  --color-warm-amber: #f0be91;
  --color-ivory: #f7f1e9;
  --color-muted-gold: #e2a97c;
  --color-soft-white: #fffaf4;
  --color-deep-charcoal: #191220;

  --color-background-primary-rgb: 20, 15, 28;
  --color-background-secondary-rgb: 33, 24, 39;
  --color-accent-primary-rgb: 208, 147, 104;
  --color-accent-secondary-rgb: 111, 138, 113;
  --color-accent-glow-rgb: 240, 190, 145;
  --color-surface-overlay-rgb: 25, 18, 32;

  --color-background-primary: var(--color-obsidian);
  --color-background-secondary: var(--color-graphite);
  --color-accent-primary: var(--color-champagne-gold);
  --color-accent-secondary: var(--color-velvet-emerald);
  --color-accent-tertiary: var(--color-midnight-blue);
  --color-accent-glow: var(--color-warm-amber);
  --color-text-primary: var(--color-ivory);
  --color-text-secondary: var(--color-muted-gold);
  --color-text-on-dark: var(--color-soft-white);
  --color-surface-overlay: var(--color-deep-charcoal);

  --color-border-subtle: rgba(var(--color-accent-primary-rgb), 0.3);
  --color-border-focus: var(--color-warm-amber);
  --color-shadow-warm: rgba(var(--color-accent-glow-rgb), 0.15);

  --font-heading: "Playfair Display", serif;
  --font-body: "Inter", sans-serif;

  --font-size-display: clamp(2.5rem, 5vw + 1rem, 3.5rem);
  --font-size-h1: clamp(2rem, 3vw + 0.75rem, 2.5rem);
  --font-size-h2: clamp(1.5rem, 2vw + 0.5rem, 2rem);
  --font-size-h3: clamp(1.25rem, 1.5vw + 0.25rem, 1.5rem);
  --font-size-body-large: 1.125rem;
  --font-size-body: 1rem;
  --font-size-caption: 0.875rem;
  --font-size-small: 0.75rem;

  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  --line-height-display: 1.1;
  --line-height-h1: 1.2;
  --line-height-h2: 1.25;
  --line-height-h3: 1.3;
  --line-height-body-large: 1.6;
  --line-height-body: 1.6;
  --line-height-caption: 1.5;
  --line-height-small: 1.4;

  --letter-spacing-heading: 0.02em;
  --letter-spacing-label: 0.08em;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --space-8: 6rem;

  --container-max-width: 1200px;
  --section-padding-desktop: 6rem;
  --section-padding-mobile: 4rem;
  --card-padding: 1.5rem;
  --card-padding-large: 2rem;
  --grid-gap-card: 1.5rem;
  --grid-gap-tight: 1rem;

  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 16px;
  --radius-pill: 24px;

  --transition-duration: 0.3s;
  --transition-ease: ease;

  --surface-glass-background: rgba(var(--color-background-secondary-rgb), 0.78);
  --surface-glass-blur: 10px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-body);
  color: var(--color-text-primary);
  background-color: var(--color-background-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  flex: 1 0 auto;
  width: 100%;
}

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

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

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

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color var(--transition-duration) var(--transition-ease);
}

a:hover {
  color: var(--color-accent-glow);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-heading);
  color: var(--color-text-primary);
  margin-block-end: var(--space-3);
}

h1 {
  font-size: var(--font-size-h1);
  line-height: var(--line-height-h1);
}

h2 {
  font-size: var(--font-size-h2);
  line-height: var(--line-height-h2);
}

h3 {
  font-size: var(--font-size-h3);
  line-height: var(--line-height-h3);
}

p {
  margin-block-end: var(--space-3);
  line-height: var(--line-height-body);
}

p:last-child {
  margin-block-end: 0;
}

blockquote {
  margin-block-end: var(--space-3);
  padding-inline-start: var(--space-4);
  border-inline-start: 2px solid var(--color-accent-primary);
  color: var(--color-text-secondary);
  font-style: italic;
}

blockquote:last-child {
  margin-block-end: 0;
}

figure {
  margin-block-end: var(--space-3);
}

figure:last-child {
  margin-block-end: 0;
}

figcaption {
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
  margin-block-start: var(--space-2);
}

address {
  font-style: normal;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section {
  padding-block: var(--section-padding-mobile);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--section-padding-desktop);
  }
}

.surface-card {
  background-color: var(--surface-glass-background);
  backdrop-filter: blur(var(--surface-glass-blur));
  -webkit-backdrop-filter: blur(var(--surface-glass-blur));
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-medium);
  padding: var(--card-padding);
}

.surface-card > :last-child {
  margin-block-end: 0;
}

.surface-card--large {
  padding: var(--card-padding-large);
}

.eyebrow {
  display: inline-block;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
  color: var(--color-accent-primary);
  margin-block-end: var(--space-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-small);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-body);
  line-height: 1.2;
  text-align: center;
  transition: all var(--transition-duration) var(--transition-ease);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(var(--color-accent-glow-rgb), 0.25);
}

.btn--primary {
  background-color: var(--color-accent-primary);
  color: var(--color-obsidian);
  border-color: var(--color-accent-primary);
}

.btn--primary:hover {
  background-color: var(--color-muted-gold);
  border-color: var(--color-muted-gold);
  box-shadow: 0 4px 20px var(--color-shadow-warm);
  transform: scale(1.02);
}

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

.btn--outline:hover {
  background-color: rgba(var(--color-accent-primary-rgb), 0.1);
  box-shadow: 0 4px 20px var(--color-shadow-warm);
  transform: scale(1.02);
}

.btn--secondary {
  background-color: var(--color-accent-secondary);
  color: var(--color-background-primary);
  border-color: var(--color-accent-secondary);
}

.btn--secondary:hover {
  background-color: #829b83;
  border-color: #829b83;
  box-shadow: 0 4px 20px rgba(var(--color-accent-secondary-rgb), 0.25);
  transform: scale(1.02);
}

.form-field {
  margin-block-end: var(--space-4);
}

.form-field:last-child {
  margin-block-end: 0;
}

.form-label {
  display: block;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-block-end: var(--space-2);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-label);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-surface-overlay);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-small);
  color: var(--color-text-primary);
  transition: border-color var(--transition-duration) var(--transition-ease),
    box-shadow var(--transition-duration) var(--transition-ease);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-glow-rgb), 0.15);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23d09368' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-inline-end: var(--space-6);
}

.form-select option {
  background-color: var(--color-surface-overlay);
  color: var(--color-text-primary);
}

.form-hint {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-block-start: var(--space-1);
}

.content-list {
  margin-block-end: var(--space-3);
  padding-inline-start: var(--space-4);
}

.content-list:last-child {
  margin-block-end: 0;
}

.content-list li {
  margin-block-end: var(--space-2);
  padding-inline-start: var(--space-2);
  position: relative;
}

.content-list li:last-child {
  margin-block-end: 0;
}

.content-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent-primary);
}

.content-list--ordered {
  list-style: decimal;
  padding-inline-start: var(--space-5);
}

.content-list--ordered li::before {
  display: none;
}

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

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

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

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

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

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

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

.flex > * {
  min-width: 0;
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-3);
  z-index: 1000;
  background-color: var(--color-accent-primary);
  color: var(--color-obsidian);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-small);
  font-weight: var(--font-weight-medium);
  transition: top var(--transition-duration) var(--transition-ease);
}

.skip-link:focus {
  top: var(--space-3);
}

@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;
  }
}