:root {
    --primary: #1D4ED8;
    --primary-dark: #1E3A8A;
    --accent: #38BDF8;
    --bg: #F8FBFF;
    --surface: #FFFFFF;
    --text: #0F172A;
    --muted: #475569;
    --shadow: 0 20px 45px rgba(29, 78, 216, 0.15);
    --radius: 20px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Poppins', sans-serif;
    background: radial-gradient(140% 140% at -10% -20%, rgba(29, 78, 216, 0.2), transparent),
                radial-gradient(160% 120% at 110% 10%, rgba(56, 189, 248, 0.15), transparent),
                var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding: 0 1.5rem;
}

main {
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
}

.hero {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4.5rem 0 3.5rem;
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0 10% auto;
    height: 420px;
    background: radial-gradient(80% 120% at 0% 0%, rgba(30, 64, 175, 0.22), transparent),
                radial-gradient(70% 100% at 100% 0%, rgba(56, 189, 248, 0.18), transparent);
    filter: blur(0px);
    opacity: 0.85;
    z-index: -1;
}

.hero__layout {
    display: grid;
    grid-template-columns: minmax(330px, 2fr) minmax(260px, 1fr);
    gap: 2.75rem;
    align-items: stretch;
}

.hero__content {
    background: var(--surface);
    padding: 3rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.hero__tag {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.75rem;
    color: var(--primary-dark);
}

.hero__title {
    font-size: clamp(2.6rem, 4vw, 3.6rem);
    font-weight: 700;
    margin: 1rem 0 0.75rem;
    color: var(--primary-dark);
}

.hero__subtitle {
    font-size: 1.15rem;
    color: var(--muted);
    margin-bottom: 1.75rem;
}

.hero__badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1.9rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.1rem;
    border-radius: 999px;
    background: rgba(29, 78, 216, 0.13);
    color: var(--primary-dark);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero__details {
    list-style: none;
    display: grid;
    gap: 0.85rem;
    margin-top: 1.85rem;
    color: var(--muted);
}

.hero__details li {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: center;
}

.pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    background: rgba(29, 78, 216, 0.12);
    color: var(--primary-dark);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero__aside {
    display: grid;
    gap: 1.5rem;
}

.info-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2.1rem;
    box-shadow: var(--shadow);
    border: 1px solid rgba(148, 163, 184, 0.18);
    display: grid;
    gap: 1.1rem;
}

.info-card--primary {
    background: linear-gradient(140deg, rgba(29, 78, 216, 0.12), rgba(56, 189, 248, 0.08));
    border-color: rgba(59, 130, 246, 0.35);
}

.info-card__title {
    font-weight: 600;
    color: var(--primary-dark);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.8rem;
}

.info-card__text {
    color: var(--muted);
    font-size: 0.95rem;
}

.info-card__actions {
    display: grid;
    gap: 0.75rem;
}

.btn--block {
    width: 100%;
}

.btn--ghost {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid rgba(29, 78, 216, 0.25);
    color: var(--primary-dark);
}

.btn--ghost:hover {
    background: rgba(29, 78, 216, 0.12);
}

.info-list {
    list-style: none;
    display: grid;
    gap: 1rem;
    color: var(--muted);
}

.info-list span {
    display: block;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 0.2rem;
}

@media (max-width: 1100px) {
    .hero__layout {
        grid-template-columns: 1fr;
    }
}

.section {
    padding: 3.8rem 0;
}

.section h2 {
    font-size: clamp(1.9rem, 3.2vw, 2.5rem);
    margin-bottom: 1.75rem;
    color: var(--primary-dark);
}

.section--alt {
    background: linear-gradient(140deg, rgba(29, 78, 216, 0.1), rgba(255, 255, 255, 0.9));
    border-radius: var(--radius);
    padding: 3.5rem;
    margin: 0 -1.5rem;
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.accompagnement {
    display: grid;
    gap: 2.5rem;
}

.accompagnement__intro {
    max-width: 720px;
}

.accompagnement__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.85rem;
}

.accompagnement__item {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid rgba(148, 163, 184, 0.16);
    position: relative;
    overflow: hidden;
    display: grid;
    gap: 0.9rem;
}

.accompagnement__item::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.08), rgba(56, 189, 248, 0.12));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.accompagnement__item:hover::before {
    opacity: 1;
}

.accompagnement__item > * {
    position: relative;
}

.accompagnement__label {
    font-weight: 600;
    color: var(--primary-dark);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.8rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 1.9rem;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    color: var(--primary-dark);
    background: rgba(29, 78, 216, 0.08);
    border: 1px solid rgba(29, 78, 216, 0.25);
    transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease, border 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
    background: rgba(29, 78, 216, 0.16);
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    color: #fff;
}

.btn--primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.lead {
    font-size: 1.22rem;
    color: var(--muted);
    margin-bottom: 1.15rem;
}

.timeline {
    display: grid;
    gap: 2.6rem;
}

.timeline__item {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2.4rem;
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: var(--shadow);
}

.timeline__meta {
    color: var(--muted);
    margin: 0.45rem 0 1.15rem;
}

.timeline ul {
    list-style: none;
    display: grid;
    gap: 0.85rem;
    color: var(--muted);
}

.formation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.8rem;
}

.formation-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid rgba(148, 163, 184, 0.16);
    display: grid;
    gap: 0.75rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.formation-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.06), rgba(56, 189, 248, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.formation-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 32px 60px rgba(29, 78, 216, 0.16);
}

.formation-card:hover::before {
    opacity: 1;
}

.formation-card > * {
    position: relative;
}

.formation-card__year {
    font-weight: 600;
    color: var(--primary-dark);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-size: 0.78rem;
    background: rgba(29, 78, 216, 0.12);
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
}

.formation-card__school {
    color: var(--muted);
}

.footer {
    max-width: 1100px;
    margin: 3.5rem auto 5rem;
    padding: 2.75rem;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.08), rgba(255, 255, 255, 0.95));
    border: 1px solid rgba(148, 163, 184, 0.2);
    display: grid;
    gap: 2rem;
    box-shadow: var(--shadow);
}

.footer__title {
    font-weight: 600;
    color: var(--primary-dark);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.footer__info a {
    color: var(--primary-dark);
    text-decoration: none;
}

.footer__info a:hover {
    text-decoration: underline;
}

.footer__info {
    color: var(--muted);
}

.footer__cta {
    display: grid;
    gap: 1rem;
}

.footer__cta h2 {
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    color: var(--primary-dark);
}

.footer__cta p {
    color: var(--muted);
    max-width: 540px;
}

.footer__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.8rem;
}

.footer__column {
    display: grid;
    gap: 0.45rem;
}

.footer__legal {
    color: var(--muted);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    body {
        padding: 0 1rem;
    }

    .section--alt {
        margin: 0 -1rem;
        border-radius: 16px;
    }

    .hero {
        padding: 3.5rem 0 2.5rem;
    }

    .hero__layout {
        gap: 2rem;
    }

    .hero__content,
    .info-card {
        padding: 2.2rem;
    }

    .accompagnement__grid {
        grid-template-columns: 1fr;
    }

    .footer__actions {
        width: 100%;
        flex-direction: column;
    }

    .footer__actions .btn {
        width: 100%;
    }
}