/* ==========================================================================
   DELTATEC — Base & Typography
   ========================================================================== */

/* --------------------------------------------------------------------------
   Reset & base
   -------------------------------------------------------------------------- */

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

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

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

body {
    margin: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

a {
    color: var(--color-primary);
    text-decoration-skip-ink: auto;
}

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

button {
    font-family: inherit;
    cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
    margin: 0;
}

h1,
h2,
h3,
h4 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text);
}

h1,
.h1 {
    font-size: var(--font-size-h1);
}

h2,
.h2 {
    font-size: var(--font-size-h2);
}

h3,
.h3 {
    font-size: var(--font-size-h3);
}

h4,
.h4 {
    font-size: var(--font-size-h4);
}

.display {
    font-size: var(--font-size-display);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.text-body {
    font-size: var(--font-size-body);
    line-height: var(--line-height-normal);
}

.text-small {
    font-size: var(--font-size-small);
    line-height: var(--line-height-normal);
}

.text-caption {
    font-size: var(--font-size-caption);
    line-height: var(--line-height-snug);
    color: var(--color-text-muted);
}

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

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

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

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

/* --------------------------------------------------------------------------
   Accessibilité
   -------------------------------------------------------------------------- */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--section-padding-x);
    z-index: calc(var(--z-header) + 10);
    padding: 0.75rem 1.25rem;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 1rem;
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

/* --------------------------------------------------------------------------
   Layout utilities
   -------------------------------------------------------------------------- */

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

.container--narrow {
    max-width: var(--container-narrow);
}

.container--wide {
    max-width: var(--container-wide);
}

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

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

.section__header {
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section__eyebrow {
    display: inline-block;
    margin-bottom: 0.75rem;
    font-size: var(--font-size-caption);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    color: var(--color-accent);
}

.section__title {
    margin-bottom: 0.75rem;
}

.section__description {
    max-width: 42rem;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.grid {
    display: grid;
    gap: var(--grid-gap);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
}

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

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

.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;
}

/* --------------------------------------------------------------------------
   Main content offset for sticky header
   -------------------------------------------------------------------------- */

main {
    min-height: calc(100vh - var(--header-height) - 12rem);
}