/* ==========================================================================
   Millennium Invest AG – Styles
   Esprit "luxe" : typo serif Cormorant Garamond, généreuse mise en page,
   palette bleu nuit, lignes fines.
   ========================================================================== */

:root {
    --color-bg: #ffffff;
    --color-text: #1a1f29;
    --color-muted: #5f6773;
    --color-primary: #0f2236;
    --color-primary-soft: #1d3a57;
    --color-line: #e2e2e2;
    --color-line-strong: #c2c2c2;
    --color-footer-bg: #0f2236;
    --color-footer-text: #b9c1cc;

    --container-max: 1280px;
    --content-max: 980px;

    --font-serif: "Cormorant Garamond", "EB Garamond", Garamond, Georgia, "Times New Roman", serif;
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    --transition: 250ms ease;
}

/* Reset léger */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    font-size: 16px;
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover, a:focus-visible { color: var(--color-primary); }
button { font: inherit; cursor: pointer; }

/* Accessibilité */
.visually-hidden {
    position: absolute !important;
    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; left: -9999px; top: 0;
    background: var(--color-primary); color: #fff;
    padding: .75rem 1rem; z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* Conteneur */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    padding: 3.5rem 0 2.5rem;
    background: #fff;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: center;
}
.brand img {
    width: clamp(180px, 22vw, 300px);
    height: auto;
}

/* ==========================================================================
   Sections
   ========================================================================== */
.site-main { padding-bottom: 6rem; }

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 2.4vw, 2.1rem);
    font-weight: 400;
    color: var(--color-primary);
    letter-spacing: .04em;
    margin: 0 0 2.5rem;
    text-align: left;
}
.section-title::after {
    content: "";
    display: block;
    width: 48px;
    height: 1px;
    background: var(--color-primary);
    margin-top: 1.25rem;
    opacity: .4;
}

.what-we-do, .contact {
    padding: 4rem 0;
}
.what-we-do .container,
.contact .container {
    max-width: var(--content-max);
}

/* Liste des activités */
.activities {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2.75rem;
}
.activity {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 1.75rem;
    align-items: start;
}
.activity-icon {
    color: var(--color-primary);
    width: 56px; height: 56px;
    display: inline-flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    opacity: .85;
}
.activity-icon svg {
    width: 36px;
    height: 36px;
    stroke-width: 1.2;
}
.activity p {
    margin: 0;
    color: var(--color-muted);
    font-size: 1.05rem;
    line-height: 1.85;
    font-weight: 300;
    letter-spacing: .01em;
}
.activity strong {
    color: var(--color-primary);
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
    font-size: 1.25rem;
    letter-spacing: .02em;
    margin-right: .15em;
}

/* ==========================================================================
   Formulaire de contact
   ========================================================================== */
.contact {
    border-top: 1px solid var(--color-line);
    margin-top: 1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.form-row {
    margin: 0;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    border: none;
    border-bottom: 1px solid var(--color-line);
    background: transparent;
    padding: 1.5rem .25rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 300;
    color: var(--color-text);
    border-radius: 0;
    outline: none;
    transition: border-color var(--transition);
    letter-spacing: .01em;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: #9ea3ab;
    opacity: 1;
    font-weight: 300;
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-bottom-color: var(--color-primary);
}
.contact-form textarea {
    resize: vertical;
    min-height: 140px;
    padding-top: 1.25rem;
}

/* Honeypot caché */
.hp-field {
    position: absolute;
    left: -10000px;
    width: 1px; height: 1px;
    overflow: hidden;
}

.form-row--turnstile {
    margin-top: 1.75rem;
    min-height: 65px;
}
.form-row--turnstile .cf-turnstile {
    display: flex;
    justify-content: flex-start;
}

.form-actions {
    margin-top: 2rem;
    text-align: left;
}
.btn {
    display: inline-block;
    padding: .75rem 2.5rem;
    font-family: var(--font-sans);
    font-size: .85rem;
    font-weight: 400;
    letter-spacing: .15em;
    text-transform: uppercase;
    border-radius: 999px;
    border: 1px solid var(--color-line-strong);
    background: transparent;
    color: var(--color-primary);
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    min-width: 140px;
    text-align: center;
}
.btn:hover, .btn:focus-visible {
    border-color: var(--color-primary);
    color: #fff;
    background: var(--color-primary);
}
.btn[disabled] { opacity: .55; cursor: not-allowed; }

.form-feedback {
    margin: 1.5rem 0 0;
    font-size: .9rem;
    min-height: 1.2em;
    letter-spacing: .02em;
}
.form-feedback.is-success { color: #1f6e3a; }
.form-feedback.is-error   { color: #b3261e; }

input.is-invalid, textarea.is-invalid {
    border-bottom-color: #b3261e !important;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--color-footer-bg);
    color: var(--color-footer-text);
    padding: 4rem 0 1.5rem;
    margin-top: 0;
    font-size: .9rem;
    font-weight: 300;
    letter-spacing: .02em;
}
.footer-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    align-items: start;
    max-width: var(--content-max);
    margin: 0 auto;
}
.footer-address {
    font-style: normal;
    line-height: 1.85;
    color: var(--color-footer-text);
}
.footer-address strong {
    color: #fff;
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: .05em;
    display: inline-block;
    margin-bottom: .25rem;
}

.footer-contact {
    grid-column: 1 / 2;
    margin-top: 1rem;
}
.footer-contact a {
    color: var(--color-footer-text);
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
    transition: border-color var(--transition), color var(--transition);
}
.footer-contact a:hover {
    color: #fff;
    border-bottom-color: rgba(255,255,255,.5);
}

.footer-social {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    align-self: start;
    color: #fff;
}
.footer-social a {
    color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    transition: opacity var(--transition);
    opacity: .9;
}
.footer-social a:hover { opacity: 1; }

.footer-bottom {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,.08);
    text-align: center;
    color: rgba(255,255,255,.45);
    font-size: .78rem;
    letter-spacing: .04em;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 2rem;
    padding-right: 2rem;
}
.footer-bottom p { margin: 0; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .container { padding: 0 1.5rem; }
    .site-header { padding: 2.25rem 0 1.5rem; }
    .what-we-do, .contact { padding: 3rem 0; }
    .activities { gap: 2rem; }
    .activity { grid-template-columns: 44px 1fr; gap: 1.25rem; }
    .activity-icon { width: 44px; height: 44px; }
    .activity-icon svg { width: 28px; height: 28px; }
    .activity p { font-size: 1rem; line-height: 1.75; }
    .activity strong { font-size: 1.15rem; }
    .section-title { margin-bottom: 1.75rem; }
    .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
    .footer-social { grid-column: 1 / -1; grid-row: auto; }
}

@media (max-width: 480px) {
    body { font-size: 15px; }
    .activity { grid-template-columns: 36px 1fr; gap: 1rem; }
    .activity-icon { width: 36px; height: 36px; }
    .activity-icon svg { width: 24px; height: 24px; }
    .contact-form input, .contact-form textarea { padding: 1.2rem .25rem; }
}

/* Préférence utilisateur : mouvement réduit */
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}