/* ╔══════════════════════════════════════════════════════════════╗
   ║  JB-OPALE — Feuille de style (thème corporate bleu / gris)    ║
   ║  Les couleurs principales sont des variables : changez-les    ║
   ║  une seule fois ci-dessous pour reskinner tout le site.       ║
   ╚══════════════════════════════════════════════════════════════╝ */

:root {
    /* Couleurs de la marque JB-Opale (issues du logo) */
    --bleu:        #213050;   /* navy — couleur principale */
    --bleu-fonce:  #16223c;
    --bleu-clair:  #2e4571;
    --accent:      #45b0a6;   /* turquoise — accent / liens */
    --rose:        #e0457b;
    --jaune:       #f5c518;
    --orange:      #ee7f1b;
    --gris-fonce:  #213050;
    --gris:        #4a5568;
    --gris-clair:  #6b7585;
    --fond:        #ffffff;
    --fond-alt:    #f5f7fa;   /* sections alternées */
    --bordure:     #e2e8f0;
    --ombre:       0 6px 24px rgba(33, 48, 80, .09);
    --rayon:       12px;
    --max:         1100px;
}

/* ─── Base ──────────────────────────────────────────────────── */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
    margin: 0;
    font-family: 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: var(--gris-fonce);
    background: var(--fond);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.2; margin: 0; color: var(--gris-fonce); }
p { margin: 0; }
a { color: var(--accent); text-decoration: none; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ─── Boutons ───────────────────────────────────────────────── */
.btn {
    display: inline-block;
    padding: 13px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: .98rem;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
    border: 2px solid transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--bleu); color: #fff; box-shadow: 0 4px 14px rgba(27,79,140,.35); }
.btn-primary:hover { background: var(--bleu-clair); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ─── Barre de navigation ───────────────────────────────────── */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--bordure);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; }
.brand-logo { height: 42px; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--gris); font-weight: 500; font-size: .96rem; transition: color .15s; }
.nav-links a:hover { color: var(--bleu); }
.nav-cta {
    background: var(--bleu); color: #fff !important;
    padding: 9px 20px; border-radius: 7px;
}
.nav-cta:hover { background: var(--bleu-clair); }

/* Menu burger (mobile) — sans JavaScript, piloté par la case à cocher */
.nav-toggle, .nav-burger { display: none; }
.nav-burger { cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-burger span { width: 26px; height: 3px; background: var(--bleu); border-radius: 2px; transition: .2s; }

/* ─── Section Accueil (hero) ────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, var(--bleu-fonce) 0%, var(--bleu) 55%, var(--bleu-clair) 100%);
    color: #fff;
    padding: 110px 0 120px;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: ""; position: absolute; right: -120px; top: -120px;
    width: 420px; height: 420px; border-radius: 50%;
    background: rgba(255,255,255,.06);
}
.hero-inner { max-width: 760px; position: relative; z-index: 1; }
.hero-mark { height: 96px; width: 96px; margin-bottom: 22px; filter: drop-shadow(0 4px 12px rgba(0,0,0,.2)); }
.hero-eyebrow { text-transform: uppercase; letter-spacing: 2px; font-size: .85rem; opacity: .85; margin-bottom: 18px; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); color: #fff; font-weight: 800; letter-spacing: -1px; }
.hero-sub { font-size: 1.18rem; opacity: .92; margin: 22px 0 36px; max-width: 640px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ─── Sections génériques ───────────────────────────────────── */
.section { padding: 90px 0; }
.section-alt { background: var(--fond-alt); }
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.4rem); font-weight: 800; text-align: center;
    position: relative; padding-bottom: 18px; margin-bottom: 14px;
}
.section-title::after {
    content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
    width: 72px; height: 4px; border-radius: 2px;
    background: linear-gradient(90deg, var(--rose), var(--jaune), var(--orange), var(--accent));
}
.section-lead { text-align: center; color: var(--gris-clair); font-size: 1.08rem; margin-bottom: 50px; }

/* ─── À propos ──────────────────────────────────────────────── */
.apropos-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; align-items: center; margin-top: 30px; }
.apropos-text { font-size: 1.1rem; color: var(--gris); white-space: pre-line; }
.apropos-signature { margin-top: 18px; font-style: italic; font-weight: 600; color: var(--bleu); }
.stats { display: flex; flex-direction: column; gap: 18px; }
.stat {
    background: var(--fond); border: 1px solid var(--bordure); border-radius: var(--rayon);
    padding: 22px 26px; box-shadow: var(--ombre); text-align: center;
}
.stat-num { display: block; font-size: 2.2rem; font-weight: 800; color: var(--bleu); }
.stat-label { color: var(--gris-clair); font-size: .95rem; }

/* ─── Compétences ───────────────────────────────────────────── */
.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px 44px; }
.skill-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.skill-name { font-weight: 600; }
.skill-cat { font-size: .78rem; color: var(--gris-clair); background: var(--fond-alt); padding: 2px 10px; border-radius: 20px; border: 1px solid var(--bordure); }
.section-alt .skill-cat { background: #fff; }
.skill-bar { height: 9px; background: var(--bordure); border-radius: 6px; overflow: hidden; }
.skill-fill { height: 100%; background: linear-gradient(90deg, var(--bleu), var(--accent)); border-radius: 6px; }

/* ─── Cartes (services / portfolio) ─────────────────────────── */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.projects-grid { grid-template-columns: repeat(2, 1fr); }
.card {
    background: var(--fond); border: 1px solid var(--bordure); border-radius: var(--rayon);
    padding: 32px 28px; box-shadow: var(--ombre);
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(19,58,104,.14); border-color: var(--accent); }
.card-icon { font-size: 2.4rem; margin-bottom: 14px; }
.card h3 { font-size: 1.25rem; margin-bottom: 10px; color: var(--bleu); }
.card p { color: var(--gris); font-size: .98rem; }

.project .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag { font-size: .78rem; font-weight: 600; color: var(--bleu); background: var(--fond-alt); border: 1px solid var(--bordure); padding: 4px 12px; border-radius: 20px; }
.section-alt .tag { background: #fff; }
.project-link { display: inline-block; margin-top: 16px; font-weight: 600; color: var(--bleu); }

/* ─── Migration & modernisation (bandeau mis en avant) ──────── */
.section-migration { background: linear-gradient(135deg, #e7f4f1 0%, #eef3f8 100%); }
.section-migration .section-lead { max-width: 840px; margin-left: auto; margin-right: auto; color: var(--gris); }
.migration-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.migration-card {
    background: #fff; border: 1px solid var(--bordure); border-top: 4px solid var(--accent);
    border-radius: var(--rayon); padding: 30px 26px; box-shadow: var(--ombre);
    transition: transform .18s ease, box-shadow .18s ease;
}
.migration-card:hover { transform: translateY(-6px); box-shadow: 0 14px 34px rgba(19,58,104,.14); }
.migration-ico { font-size: 2.2rem; margin-bottom: 12px; }
.migration-path { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin-bottom: 12px; }
.mig-from { color: var(--gris-clair); font-weight: 600; }
.mig-arrow { color: var(--accent); font-size: 1.3rem; font-weight: 700; }
.mig-to { color: var(--bleu); font-weight: 800; font-size: 1.08rem; }
.migration-card p { color: var(--gris); font-size: .98rem; }

/* ─── FAQ (accordéon natif <details>) ───────────────────────── */
.faq-container { max-width: 820px; }
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
    background: var(--fond); border: 1px solid var(--bordure); border-radius: var(--rayon);
    box-shadow: var(--ombre); overflow: hidden;
}
.faq-item summary {
    list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600;
    color: var(--bleu); display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: "+"; font-size: 1.5rem; font-weight: 400; color: var(--accent);
    transition: transform .2s ease; line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 24px 22px; color: var(--gris); }

/* ─── Contact ───────────────────────────────────────────────── */
.section-contact { background: var(--gris-fonce); color: #fff; }
.section-contact .section-title, .section-contact .section-title { color: #fff; }
.section-contact .section-lead { color: rgba(255,255,255,.7); }
.contact-inner { text-align: center; }
.contact-cards { display: flex; flex-wrap: wrap; justify-content: center; gap: 22px; margin: 0 auto 44px; max-width: 820px; }
.contact-card {
    flex: 1 1 220px; max-width: 320px;
    display: flex; flex-direction: column; gap: 6px; align-items: center;
    background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--rayon); padding: 28px 20px; color: #fff;
    transition: background .15s, transform .15s;
}
a.contact-card:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); }
.contact-ico { font-size: 1.8rem; }
.contact-label { font-size: .8rem; text-transform: uppercase; letter-spacing: 1px; opacity: .6; }
.contact-value { font-weight: 600; }

/* ─── Pied de page ──────────────────────────────────────────── */
.footer { background: #1F2A44; color: rgba(255,255,255,.65); padding: 30px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .9rem; }
.footer-brand { display: inline-flex; align-items: center; }
.footer-logo { height: 48px; width: auto; display: block; }
.footer-siret { display: block; margin-top: 4px; font-size: .82rem; opacity: .8; }
.footer-link { display: inline-block; margin-top: 6px; font-size: .82rem; color: rgba(255,255,255,.72); text-decoration: underline; }
.footer-link:hover { color: #fff; }
.footer-tech { opacity: .7; }

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 860px) {
    .apropos-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .cards-grid, .contact-cards, .migration-grid { grid-template-columns: 1fr; }

    .nav-burger { display: flex; }
    .nav-links {
        position: absolute; top: 68px; left: 0; right: 0;
        flex-direction: column; gap: 0; align-items: stretch;
        background: #fff; border-bottom: 1px solid var(--bordure);
        max-height: 0; overflow: hidden; transition: max-height .25s ease;
    }
    .nav-links a { padding: 16px 24px; border-top: 1px solid var(--bordure); }
    .nav-cta { border-radius: 0; }
    .nav-toggle:checked ~ .nav-links { max-height: 400px; }
    .footer-inner { justify-content: center; text-align: center; }
}

/* ════════════════════════════════════════════════════════════
   Styles techniques Blazor (chargement / erreurs) — ne pas supprimer
   ════════════════════════════════════════════════════════════ */
#blazor-error-ui {
    color-scheme: light only; background: lightyellow; bottom: 0;
    box-shadow: 0 -1px 2px rgba(0,0,0,.2); box-sizing: border-box; display: none;
    left: 0; padding: .6rem 1.25rem .7rem 1.25rem; position: fixed; width: 100%; z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: .75rem; top: .5rem; }

.loading-progress { position: absolute; display: block; width: 8rem; height: 8rem; inset: 20vh 0 auto 0; margin: 0 auto; }
.loading-progress circle { fill: none; stroke: #e0e0e0; stroke-width: .6rem; transform-origin: 50% 50%; transform: rotate(-90deg); }
.loading-progress circle:last-child { stroke: #1b4f8c; stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%; transition: stroke-dasharray .05s ease-in-out; }
.loading-progress-text { position: absolute; text-align: center; font-weight: bold; inset: calc(20vh + 3.25rem) 0 auto .2rem; color: #1b4f8c; }
.loading-progress-text:after { content: var(--blazor-load-percentage-text, "Chargement"); }