/* =============================================================
   Satkaar — vitrine corporate
   Ton : institutionnel, sobre, premium. Pas d'effet startup-tech.
   ============================================================= */

:root {
    --navy: #1a2952;
    --klein: #2238d8;
    --light: #e8ecf7;
    --bg: #fafafa;
    --paper: #ffffff;
    --ink: #0a1535;
    --muted: #5a6480;
    --line: #dde2f0;
    --green: #0f7a4e;

    --radius: 6px;
    --radius-lg: 8px;
    --shadow-card: 0 1px 0 rgba(10, 21, 53, 0.04), 0 6px 24px -12px rgba(10, 21, 53, 0.14);
    --shadow-card-strong: 0 2px 0 rgba(10, 21, 53, 0.05), 0 16px 40px -16px rgba(10, 21, 53, 0.22);

    --font-serif: "Fraunces", "Source Serif Pro", Georgia, serif;
    --font-sans: "Inter", "Source Sans Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

    --content-max: 1100px;
    --header-h: 72px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--klein); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
    outline: 2px solid var(--klein);
    outline-offset: 3px;
    border-radius: 3px;
}

.skip-link {
    position: absolute; left: -9999px; top: 0;
    background: var(--navy); color: var(--paper);
    padding: 10px 14px; z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

.container { max-width: var(--content-max); margin: 0 auto; padding: 0 28px; width: 100%; }
.container--narrow { max-width: 760px; }

/* ---------- Typography ---------- */

.eyebrow {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 11.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--klein);
    margin: 0 0 14px;
}
.eyebrow--muted { color: var(--muted); }
.eyebrow--accent { color: var(--klein); }
.eyebrow--inverse { color: var(--light); }

.display, .title {
    font-family: var(--font-serif);
    color: var(--navy);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.01em;
    margin: 0 0 22px;
}
.display { font-size: clamp(2.4rem, 4.6vw, 3.6rem); max-width: 18ch; }
.title { font-size: clamp(1.9rem, 3.4vw, 2.6rem); }
.display em, .title em { font-style: italic; color: var(--klein); font-weight: 600; }

.lede {
    font-size: clamp(1.05rem, 1.3vw, 1.18rem);
    color: var(--ink);
    margin: 0 0 28px;
    max-width: 64ch;
}
.lede--sm { font-size: 1rem; max-width: 68ch; margin-bottom: 22px; }

.prose p { margin: 0 0 16px; max-width: 62ch; }
.prose strong { color: var(--navy); }

.note-muted {
    margin-top: 22px;
    color: var(--muted);
    font-size: 14.5px;
    font-style: italic;
    max-width: 70ch;
}

h2, h3, h4 { font-family: var(--font-serif); color: var(--navy); }

/* ---------- Header sticky ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgba(250, 250, 250, 0.85);
    backdrop-filter: saturate(140%) blur(8px);
    -webkit-backdrop-filter: saturate(140%) blur(8px);
    border-bottom: 1px solid transparent;
    transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.site-header.is-scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--line);
    box-shadow: 0 2px 18px -10px rgba(10, 21, 53, 0.18);
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    gap: 24px;
}
.site-header__brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--ink);
}
.site-header__brand:hover { text-decoration: none; }
.site-header__mark { width: 36px; height: 36px; display: inline-flex; }
.site-header__mark svg { width: 100%; height: 100%; }
.site-header__brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.site-header__brand-name {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--navy);
    font-size: 18px;
}
.site-header__brand-tag {
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.04em;
}

.site-nav { display: flex; align-items: center; }
.site-nav__list {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}
.site-nav__list li a {
    display: inline-flex;
    align-items: center;
    padding: 8px 12px;
    color: var(--ink);
    font-weight: 500;
    font-size: 14.5px;
    border-radius: var(--radius);
    text-decoration: none;
    transition: background 120ms ease, color 120ms ease;
}
.site-nav__list li a:hover { background: var(--light); color: var(--navy); text-decoration: none; }

.site-nav__toggle {
    display: none;
    background: var(--navy);
    border: none;
    width: 44px; height: 44px;
    border-radius: var(--radius);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
}
.site-nav__toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--paper);
    transition: transform 160ms ease, opacity 160ms ease;
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 14.5px;
    line-height: 1;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease;
    text-decoration: none;
    white-space: nowrap;
}
.btn--sm { padding: 9px 14px; font-size: 13.5px; }
.btn--lg { padding: 14px 22px; font-size: 15.5px; }
.btn--primary { background: var(--klein); color: var(--paper); }
.btn--primary:hover { background: var(--navy); color: var(--paper); text-decoration: none; }
.btn--ghost { background: transparent; border-color: var(--navy); color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: var(--paper); text-decoration: none; }

/* ---------- Section ---------- */

.section { padding: 96px 0; background: var(--bg); }
.section--alt { background: var(--light); }
.section--hero { padding: 88px 0 72px; }
.section--narrow { padding: 64px 0; }

@media (max-width: 768px) {
    .section { padding: 64px 0; }
    .section--hero { padding: 56px 0 48px; }
}

/* ---------- HERO ---------- */

.hero {
    display: grid;
    grid-template-columns: 1fr;
    gap: 56px;
}
.hero__text { max-width: 720px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }

.hero__labels { border-top: 1px solid var(--line); padding-top: 28px; }
.label-strip {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 14px 20px;
    align-items: center;
}
.label-strip__chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-weight: 600;
    font-size: 13.5px;
    letter-spacing: 0.02em;
    padding: 6px 10px;
    border: 1px solid var(--line);
    background: var(--paper);
    border-radius: 4px;
}

/* ---------- two-cols (qui-sommes-nous) ---------- */

.two-cols {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    align-items: start;
    margin-top: 8px;
}
.ancrage {
    background: var(--paper);
    border: 1px solid var(--line);
    border-left: 4px solid var(--klein);
    padding: 24px 26px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}
.ancrage p { margin: 0 0 10px; }
.ancrage p:last-child { margin-bottom: 0; }

/* ---------- Cards grid (mission, IA, partenariats) ---------- */

.cards-grid {
    display: grid;
    gap: 22px;
    margin-top: 8px;
}
.cards-grid--2 { grid-template-columns: 1fr 1fr; }
.cards-grid--3 { grid-template-columns: repeat(3, 1fr); }

.product-card, .pillar-card, .partner-card, .badge-card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px 28px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
}
.product-card__icon, .pillar-card__icon {
    width: 56px; height: 56px;
    margin-bottom: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--light);
    border-radius: var(--radius);
}
.product-card__icon svg, .pillar-card__icon svg { width: 36px; height: 36px; }
.product-card__title, .pillar-card__title, .partner-card__title {
    font-family: var(--font-serif);
    color: var(--navy);
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 0 10px;
    line-height: 1.25;
}
.product-card__body, .pillar-card p, .partner-card p, .badge-card p {
    margin: 0;
    color: var(--ink);
}

/* ---------- Sub-blocks (confiance) ---------- */

.subblock { margin-top: 44px; }
.subblock__title {
    font-family: var(--font-serif);
    color: var(--navy);
    font-size: 1.4rem;
    margin: 0 0 22px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.badges {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.badge-card {
    border-left: 4px solid var(--green);
}
.badge-card__pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 11px;
    background: rgba(15, 122, 78, 0.08);
    color: var(--green);
    font-weight: 700;
    font-size: 12.5px;
    letter-spacing: 0.02em;
    border-radius: 4px;
    margin-bottom: 14px;
    align-self: flex-start;
}
.badge-card__dot {
    width: 7px; height: 7px;
    background: var(--green);
    border-radius: 50%;
}

.partner-card {
    border-left: 4px solid var(--klein);
}

/* ---------- Contact ---------- */

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 32px;
    align-items: start;
    margin-top: 8px;
}

.contact-form {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; }
.form-field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 6px;
}
.form-field input,
.form-field textarea {
    width: 100%;
    padding: 11px 13px;
    background: var(--bg);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--ink);
    font-family: inherit;
    font-size: 15px;
    transition: border-color 120ms ease, background 120ms ease;
}
.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--klein);
    background: var(--paper);
}
.form-field textarea { resize: vertical; min-height: 110px; }

.form-field--check label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: 500;
    color: var(--ink);
    font-size: 14px;
    line-height: 1.45;
    cursor: pointer;
}
.form-field--check input[type=checkbox] {
    width: 18px;
    height: 18px;
    accent-color: var(--klein);
    margin-top: 2px;
    flex-shrink: 0;
}
.form-error { color: #c92a2a; font-size: 13px; margin: 6px 0 0; }

/* honeypot caché de tous les utilisateurs humains, mais visible des bots */
.hp {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin: 0 0 20px;
}
.alert--success {
    background: rgba(15, 122, 78, 0.1);
    color: var(--green);
    border: 1px solid rgba(15, 122, 78, 0.25);
}
.alert--error {
    background: rgba(201, 42, 42, 0.08);
    color: #8a1f1f;
    border: 1px solid rgba(201, 42, 42, 0.2);
}

.contact-aside {
    background: var(--navy);
    color: var(--paper);
    padding: 28px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card-strong);
}
.contact-aside a { color: var(--light); }
.contact-aside__line { margin: 4px 0; }
.contact-aside hr {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    margin: 22px 0 16px;
}
.social { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.social a { font-weight: 600; }

/* ---------- Footer ---------- */

.site-footer {
    background: var(--navy);
    color: var(--paper);
    padding: 60px 0 28px;
}
.site-footer__grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 36px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.site-footer__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-family: var(--font-serif);
    font-size: 17px;
}
.site-footer__about { color: rgba(255, 255, 255, 0.78); margin: 0; font-size: 14.5px; }
.site-footer__col h4 {
    color: var(--paper);
    font-family: var(--font-sans);
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin: 0 0 12px;
}
.site-footer__col ul {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.site-footer__col a { color: rgba(255, 255, 255, 0.78); font-size: 14.5px; }
.site-footer__col a:hover { color: var(--paper); }
.site-footer__legal {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
}

/* ---------- Mentions légales ---------- */

.container--narrow h2 {
    margin: 36px 0 12px;
    font-size: 1.25rem;
}
.container--narrow ul { padding-left: 22px; }
.container--narrow ul li { margin-bottom: 6px; }

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
    .two-cols, .contact-grid { grid-template-columns: 1fr; }
    .cards-grid--3 { grid-template-columns: 1fr 1fr; }
    .badges { grid-template-columns: 1fr 1fr; }
    .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
    .site-nav__toggle { display: inline-flex; }
    .site-nav__list {
        position: fixed;
        inset: var(--header-h) 0 0 0;
        background: var(--paper);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 18px 24px;
        border-top: 1px solid var(--line);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform 200ms ease, opacity 200ms ease;
    }
    .site-nav__list.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .site-nav__list li a {
        font-size: 18px;
        padding: 14px 12px;
        border-bottom: 1px solid var(--line);
    }
    .site-nav__list li:last-child a { border-bottom: none; margin-top: 12px; }

    .cards-grid--2, .cards-grid--3 { grid-template-columns: 1fr; }
    .badges { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .site-footer__grid { grid-template-columns: 1fr; }
    .container { padding: 0 18px; }
}

/* ---------- Print ---------- */

@media print {
    .site-header, .site-footer, .site-nav { display: none; }
    .section { padding: 24px 0; background: #fff; }
}