@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.13.1/font/bootstrap-icons.min.css");

/* Palette claire moderne avec une touche de couleur */
:root {
    --brand-primary: #5b8def;   /* bleu doux (accent) */
    --brand-secondary: #6c757d; /* gris neutre */
    --brand-bg: #f8f9fb;        /* fond clair subtil */
    --brand-surface: #ffffff;   /* surface cartes/sections */
    --brand-border: #e9ecef;    /* bordures légères */
    --brand-text: #2b2f33;      /* texte principal */
    --brand-muted: #6b7280;     /* texte secondaire */
    --brand-primary-contrast: #ffffff;
}

/* Corps + base */
html, body {
    background-color: var(--brand-bg);
    color: var(--brand-text);
}

/* Liens */
a {
    color: var(--brand-primary);
    text-decoration: none;
}
a:hover {
    color: #3f6fdc;
    text-decoration: underline;
}

/* Navbar — thème clair moderne */
.navbar {
    --nv-bg: var(--brand-surface);
    --nv-border: var(--brand-border);
    --nv-text: var(--brand-text);
    --nv-muted: var(--brand-muted);
    --nv-accent: var(--brand-primary);

    background: var(--nv-bg) !important;
    border-bottom: 1px solid var(--nv-border);
    position: sticky;       /* rester visible au scroll */
    top: 0;
    z-index: 1030;          /* au-dessus du contenu */
    transition: box-shadow .25s ease, background-color .25s ease, border-color .25s ease;
}

/* État "élevé" (après scroll potentiel, si vous ajoutez une classe JS) */
.navbar.is-elevated {
    box-shadow: 0 6px 30px rgba(0, 0, 0, .08);
    border-color: transparent;
}

/* Contenu navbar */
.navbar .navbar-brand {
    color: var(--nv-text);
    font-weight: 700;
    letter-spacing: .2px;
    display: flex;
    align-items: center;
    gap: .5rem;
    text-decoration: none;
}
.navbar .navbar-brand:hover { color: var(--nv-text); }

/* Petit marqueur coloré avant le titre */
.navbar .navbar-brand::before {
    content: "";
    width: .625rem;
    height: .625rem;
    border-radius: 50%;
    background: var(--nv-accent);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--nv-accent) 15%, transparent);
}

/* Liens */
.navbar .nav-link {
    position: relative;
    color: var(--nv-muted);
    font-weight: 500;
    padding: .5rem .75rem;
    border-radius: .5rem;
    transition: color .2s ease, background-color .2s ease;
    text-decoration: none;
}
.navbar .nav-link:hover,
.navbar .nav-link:focus {
    color: var(--nv-accent);
    background-color: color-mix(in srgb, var(--nv-accent) 10%, transparent);
    text-decoration: none;
}

/* Soulignement animé */
.navbar .nav-link::after {
    content: "";
    position: absolute;
    left: .75rem;
    right: .75rem;
    bottom: .35rem;
    height: 2px;
    background: var(--nv-accent);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .25s ease;
    border-radius: 2px;
}
.navbar .nav-link:hover::after,
.navbar .nav-link:focus::after {
    transform: scaleX(1);
}

/* Actif / page courante */
.navbar .nav-link.active,
.navbar .nav-link[aria-current="page"] {
    color: var(--nv-accent);
    background-color: color-mix(in srgb, var(--nv-accent) 10%, transparent);
    font-weight: 600;
}
.navbar .nav-link.active::after,
.navbar .nav-link[aria-current="page"]::after {
    transform: scaleX(1);
}

/* Toggler (icône hamburger) sur fond clair */
.navbar .navbar-toggler {
    border-color: var(--nv-border);
}
.navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 .2rem color-mix(in srgb, var(--nv-accent) 35%, transparent);
}
.navbar .navbar-toggler-icon {
    background-image:
        url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Espace entre items sur grand écran */
@media (min-width: 992px) {
    .navbar .navbar-nav .nav-item + .nav-item {
        margin-left: .25rem;
    }
}

/* Option: réduire légèrement la hauteur générale */
.navbar .nav-link,
.navbar .navbar-brand {
    line-height: 1.1;
}

/* Boutons */
.btn-primary {
    --bs-btn-bg: var(--brand-primary);
    --bs-btn-border-color: var(--brand-primary);
    --bs-btn-hover-bg: #477be9;
    --bs-btn-hover-border-color: #477be9;
    --bs-btn-active-bg: #3f6fdc;
    --bs-btn-active-border-color: #3f6fdc;
    --bs-btn-disabled-bg: #94b3ff;
    --bs-btn-disabled-border-color: #94b3ff;
    --bs-btn-color: var(--brand-primary-contrast);
    text-decoration: none !important;
}
.btn-outline-primary {
    --bs-btn-color: var(--brand-primary);
    --bs-btn-border-color: var(--brand-primary);
    --bs-btn-hover-bg: var(--brand-primary);
    --bs-btn-hover-border-color: var(--brand-primary);
    --bs-btn-hover-color: var(--brand-primary-contrast);
    text-decoration: none !important;
}

/* Sections */
section.bg-light {
    background: linear-gradient(180deg, #f9fafc 0%, #ffffff 100%);
    border-bottom: 1px solid var(--brand-border);
}

/* Cartes */
.card {
    border: 1px solid var(--brand-border);
    background: var(--brand-surface);
    border-radius: .75rem;
}
.card .card-title {
    color: var(--brand-text);
    font-weight: 600;
}
.card .card-text {
    color: var(--brand-muted);
}

/* Footer coloré (clair et moderne) */
footer .bg-light {
    --ft-accent: var(--brand-primary);
    --ft-bg-1: color-mix(in srgb, var(--brand-surface) 78%, var(--brand-bg));
    --ft-bg-2: color-mix(in srgb, var(--brand-surface) 92%, var(--brand-bg));
    --ft-border: color-mix(in srgb, var(--brand-primary) 22%, var(--brand-border));
    --ft-text: color-mix(in srgb, var(--brand-text) 75%, #0000);
    --ft-muted: color-mix(in srgb, var(--brand-muted) 85%, #0000);

    /* bandeau d’accent fin + fond en dégradé */
    background:
        linear-gradient(180deg, var(--ft-bg-1) 0%, var(--ft-bg-2) 100%) !important;
    border-top: 0;
    position: relative;
}
footer .bg-light::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 4px;
    background: linear-gradient(90deg,
    color-mix(in srgb, var(--ft-accent) 85%, transparent),
    color-mix(in srgb, var(--ft-accent) 55%, transparent) 60%,
    color-mix(in srgb, var(--ft-accent) 85%, transparent));
}

/* Contenu */
footer .container {
    padding-top: 1.1rem !important;
    padding-bottom: 1.1rem !important;
}
footer .text-muted {
    color: var(--ft-muted) !important;
}

/* Liens avec soulignement animé coloré */
footer .link-secondary {
    color: var(--ft-text) !important;
    text-decoration: none !important;
    position: relative;
    transition: color .2s ease;
}
footer .link-secondary::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    height: 2px;
    width: 0;
    background: var(--ft-accent);
    border-radius: 2px;
    transition: width .2s ease;
}
footer .link-secondary:hover,
footer .link-secondary:focus {
    color: var(--ft-accent) !important;
}
footer .link-secondary:hover::after,
footer .link-secondary:focus::after {
    width: 100%;
}

/* Séparateur élégant entre liens (si utilisé) */
footer .separator {
    display: inline-block;
    margin: 0 .5rem;
    width: 1px;
    height: 0.9em;
    background: var(--ft-border);
    vertical-align: middle;
    opacity: .9;
}

/* Icônes sociales (optionnel) */
footer .social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    margin: 0 .25rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--ft-accent) 10%, transparent);
    color: color-mix(in srgb, var(--ft-accent) 75%, #0000);
    transition: transform .15s ease, background-color .2s ease, color .2s ease;
    text-decoration: none !important;
}
footer .social a:hover {
    background: color-mix(in srgb, var(--ft-accent) 18%, transparent);
    transform: translateY(-1px);
    color: var(--ft-accent);
}

/* Amélioration du focus pour accessibilité */
:focus-visible {
    outline: 3px solid rgba(91,141,239,.45);
    outline-offset: 2px;
}