/* ATLAS Partners — reinitialisation, typographie, accessibilite, mouvement. */

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

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

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

/* Titres : aucun degrade, aucune ombre (DESIGN.md section 3). */
.page-title {
  font-size: var(--font-size-page-title);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.section-title {
  font-size: var(--font-size-section-title);
  font-weight: 700;
  line-height: 1.3;
}

.card-title {
  font-size: var(--font-size-card-title);
  font-weight: 700;
  line-height: 1.4;
}

.label,
.field > label,
.fieldset-legend {
  font-size: var(--font-size-label);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.eyebrow {
  font-size: var(--font-size-label);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  border-block-end: 2px solid var(--color-accent);
  padding-block-end: var(--space-1);
  display: inline-block;
}

.metric-value {
  font-size: var(--font-size-metric);
  font-weight: 800;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

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

.text-small {
  font-size: 0.82rem;
}

.numeric {
  font-variant-numeric: tabular-nums;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-4);
  inset-block-start: calc(-1 * var(--target-min) - var(--space-4));
  z-index: 60;
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-surface);
  font-weight: 700;
  text-decoration: none;
  transition: inset-block-start var(--duration-fast) var(--ease-out);
}

.skip-link:focus-visible {
  inset-block-start: var(--space-4);
  color: var(--color-surface);
}

/* Mouvement — L2 contenu (DESIGN.md section 7). */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

.reveal.in-view {
  opacity: 1;
  transform: none;
}

.reveal--delay-1 {
  transition-delay: 0.06s;
}

.reveal--delay-2 {
  transition-delay: 0.12s;
}

.reveal--delay-3 {
  transition-delay: 0.18s;
}

.view-enter {
  animation: view-enter var(--duration-base) var(--ease-out) both;
}

@keyframes view-enter {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

.atmosphere {
  background-image: radial-gradient(circle at 10% 10%, rgba(var(--color-secondary-rgb), 0.15), transparent 35%),
    radial-gradient(circle at 90% 0%, rgba(var(--color-accent-rgb), 0.12), transparent 32%);
}

@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}