:root {
    --color-bg: #f5f7fb;
    --color-bg-alt: #ffffff;
    --color-primary: #1f4f8c;
    --color-accent: #ff7f50;
    --color-text: #222222;
    --color-muted: #6b7280;
    --shadow-soft: 0 14px 30px rgba(15, 23, 42, 0.15);
    --radius-lg: 18px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Source Sans 3", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

/* Containers & sections */

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 4rem 0;
}

.section-alt {
    background: #e9eef7;
}

.section-contact {
    background: linear-gradient(135deg, #1f4f8c 0%, #122543 100%);
    color: #ffffff;
}

.section-contact h2,
.section-contact .section-intro,
.section-contact label,
.section-contact strong {
    color: #ffffff;
}

/* Header & nav */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(245, 247, 251, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e2e8f0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1.5rem;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-top {
    font-family: "Montserrat", sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.logo-sub {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-muted);
}

nav a {
    margin-left: 1rem;
    text-decoration: none;
    font-size: 0.95rem;
    color: var(--color-muted);
    font-weight: 500;
}

nav a:hover {
    color: var(--color-primary);
}

/* Hero */

.hero {
    padding: 4.5rem 0 3.5rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: center;
}

.hero-tagline {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.8rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.hero h1 {
    font-family: "Montserrat", sans-serif;
    font-size: 2.3rem;
    margin: 0 0 1rem;
    color: var(--color-primary);
}

.hero-intro {
    color: var(--color-muted);
    font-size: 1.02rem;
    max-width: 40rem;
}

.hero-buttons {
    margin-top: 1.7rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

/* Photo */

.hero-photo {
    display: flex;
    justify-content: center;
}

.photo-card {
    background: var(--color-bg-alt);
    border-radius: 28px;
    padding: 0.6rem;
    box-shadow: var(--shadow-soft);
    max-width: 320px;
}

.photo-card img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 24px;
}

/* Buttons */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease, color 0.12s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #1f4f8c, #23395d);
    color: #ffffff;
    box-shadow: 0 12px 20px rgba(31, 79, 140, 0.35);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 24px rgba(31, 79, 140, 0.4);
}

.btn-outline {
    background: #ffffff;
    color: var(--color-primary);
    border-color: #cbd5f5;
}

.btn-outline:hover {
    background: #e6edff;
}

/* Sections */

h2 {
    font-family: "Montserrat", sans-serif;
    font-size: 1.8rem;
    margin-top: 0;
    margin-bottom: 0.4rem;
    color: var(--color-primary);
}

.section-intro {
    margin-top: 0.2rem;
    margin-bottom: 2rem;
    color: var(--color-muted);
    max-width: 42rem;
}

/* CV */

.cv-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
    gap: 2.5rem;
}

.cv-list {
    list-style: none;
    padding-left: 0;
}

.cv-list li {
    margin-bottom: 0.4rem;
}

.cv-list a {
    color: var(--color-primary);
}

.timeline {
    border-left: 3px solid #cbd5f5;
    padding-left: 1.2rem;
}

.timeline-item {
    margin-bottom: 1.4rem;
    position: relative;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -1.65rem;
    top: 0.25rem;
    width: 11px;
    height: 11px;
    border-radius: 999px;
    background: var(--color-accent);
}

.timeline-date {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-muted);
}

.timeline h4 {
    margin: 0.2rem 0 0.3rem;
    font-size: 1rem;
}

.cv-download {
    display: inline-block;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    text-decoration: none;
    color: var(--color-primary);
}

/* Cards */

.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: 1.4rem 1.4rem 1.2rem;
    box-shadow: 0 10px 18px rgba(15, 23, 42, 0.1);
    font-size: 0.95rem;
}

.card h3 {
    margin-top: 0;
    margin-bottom: 0.7rem;
    font-size: 1.05rem;
    color: var(--color-primary);
}

.card ul {
    padding-left: 1.1rem;
    margin: 0;
}

.card li {
    margin-bottom: 0.3rem;
}

.card-highlight {
    border-top: 4px solid var(--color-accent);
}

.badge {
    display: inline-block;
    margin-bottom: 0.6rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    background: #ffe1d4;
    color: #9a3a15;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

/* Contact */

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
    gap: 2.5rem;
    align-items: flex-start;
}

.contact-list {
    list-style: none;
    padding-left: 0;
}

.contact-list li {
    margin-bottom: 0.4rem;
}

.contact-list a {
    color: #ffddc1;
}

.form-group {
    margin-bottom: 0.9rem;
}

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

input,
textarea {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border-radius: 10px;
    border: 1px solid rgba(148, 163, 184, 0.6);
    font-family: inherit;
    font-size: 0.95rem;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.section-contact input,
.section-contact textarea {
    background: rgba(15, 23, 42, 0.65);
    border-color: rgba(148, 163, 184, 0.8);
    color: #f9fafb;
}

.section-contact input::placeholder,
.section-contact textarea::placeholder {
    color: #cbd5f5;
}

.form-note {
    font-size: 0.78rem;
    margin-top: 0.4rem;
    color: #e5e7eb;
}

.honeypot {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    height: 0;
    width: 0;
    z-index: -1;
}

/* Footer */

.site-footer {
    background: #0b1220;
    color: #9ca3af;
    padding: 1.3rem 0;
}

.footer-content {
    text-align: center;
    font-size: 0.85rem;
}

.footer-small {
    margin-top: 0.2rem;
    font-size: 0.78rem;
}

/* Responsif */

@media (max-width: 960px) {
    .hero-grid,
    .cv-grid,
    .cards-grid,
    .contact-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero-grid {
        text-align: left;
    }

    nav {
        display: none; /* version simple : on cache le menu sur petit écran */
    }

    .hero {
        padding-top: 3.5rem;
    }
}

@media (max-width: 600px) {
    .hero h1 {
        font-size: 1.7rem;
    }

    .nav-container {
        padding-inline: 1rem;
    }
}