/* ==========================================================================
   Base — typographie, structure générique, composants transverses
   ========================================================================== */

body {
    font-family: var(--font-body);
    font-size: var(--fs-body);
    font-weight: 400;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

h1,
h2,
h3 {
    font-family: var(--font-heading);
    line-height: var(--lh-heading);
    font-weight: 600;
    letter-spacing: 0.01em;
}

h1 {
    font-size: var(--fs-h1);
}

h2 {
    font-size: var(--fs-h2);
}

h3 {
    font-size: var(--fs-h3);
    font-weight: 500;
}

p {
    color: var(--color-text-soft);
}

strong {
    color: var(--color-text);
    font-weight: 600;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

::selection {
    background-color: var(--color-gold-light);
    color: var(--color-text);
}

/* --- Structure ---------------------------------------------------------- */

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

.section {
    padding-block: var(--space-2xl);
}

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

.section-header {
    max-width: 640px;
    margin-bottom: var(--space-xl);
}

.section-header--center {
    margin-inline: auto;
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6em;
    font-family: var(--font-body);
    font-size: var(--fs-tag);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-gold-dark);
    margin-bottom: var(--space-sm);
}

.eyebrow::before {
    content: "";
    width: 28px;
    height: 1px;
    background-color: var(--color-gold);
}

.section-header--center .eyebrow {
    justify-content: center;
}

.section-header--center .eyebrow::before {
    display: none;
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-lead {
    font-size: var(--fs-lead);
    color: var(--color-text-soft);
}

/* --- Boutons -------------------------------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6em;
    padding: 0.95em 2.1em;
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast),
        background-color var(--transition-fast), color var(--transition-fast),
        border-color var(--transition-fast);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--color-gold);
    color: var(--color-white);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    background-color: var(--color-gold-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text);
    border-color: currentColor;
}

.btn-outline:hover {
    background-color: var(--color-text);
    color: var(--color-white);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.6);
}

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

.btn-ghost {
    padding: 0;
    color: var(--color-gold-dark);
    text-transform: none;
    letter-spacing: 0.02em;
    font-size: var(--fs-small);
    border-bottom: 1px solid var(--color-gold);
    border-radius: 0;
}

.btn-ghost:hover {
    color: var(--color-text);
    border-color: var(--color-text);
    transform: none;
}

/* --- Utilitaires ---------------------------------------------------------- */

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

.skip-link {
    position: absolute;
    top: -100px;
    left: var(--space-sm);
    z-index: 999;
    padding: 0.8em 1.4em;
    background-color: var(--color-text);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    transition: top var(--transition-fast);
}

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

/* --- Révélation au scroll -------------------------------------------------- */

[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.9s cubic-bezier(0.22, 0.61, 0.36, 1),
        transform 0.9s cubic-bezier(0.22, 0.61, 0.36, 1);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal-delay="1"] {
    transition-delay: 0.12s;
}

[data-reveal-delay="2"] {
    transition-delay: 0.24s;
}

[data-reveal-delay="3"] {
    transition-delay: 0.36s;
}

@media (prefers-reduced-motion: reduce) {
    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}

@media (min-width: 768px) {
    .section {
        padding-block: var(--space-3xl);
    }
}