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

:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --off: #f5f5f3;
    --grey: #8a8a8a;
    --light: #e8e8e6;
    --accent: #0a0a0a;
    --mono: 'DM Mono', monospace;
    --sans: 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--sans);
    background: var(--white);
    color: var(--black);
    overflow-x: hidden;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 3rem;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--light);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--black);
}

.nav-logo svg {
    width: 36px;
    height: 36px;
}

.nav-logo span {
    font-family: var(--mono);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--grey);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--black); }

/* ── HERO ── */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 8rem 3rem 5rem;
    position: relative;
    overflow: hidden;
}

.hero-bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--mono);
    font-size: clamp(8rem, 18vw, 22rem);
    font-weight: 300;
    color: transparent;
    -webkit-text-stroke: 1px var(--light);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    letter-spacing: -0.02em;
}

.hero-content {
    position: relative;
    max-width: 900px;
}

.hero-label {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--grey);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.2s;
}

.hero-title {
    font-size: clamp(2.8rem, 6vw, 5.5rem);
    font-weight: 300;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.4s;
}

.hero-title strong {
    font-weight: 600;
    display: block;
}

.hero-title em {
    font-style: italic;
    font-weight: 300;
    color: var(--grey);
}

.hero-sub {
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--grey);
    max-width: 480px;
    line-height: 1.7;
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.6s;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards 0.8s;
}

.btn {
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.85rem 2rem;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-block;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
}

.btn-primary:hover {
    background: #333;
}

.btn-secondary {
    border: 1px solid var(--light);
    color: var(--black);
}

.btn-secondary:hover {
    border-color: var(--black);
    background: var(--off);
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    right: 3rem;
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--grey);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards 1.2s;
}

.hero-scroll::after {
    content: '';
    display: block;
    width: 1px;
    height: 60px;
    background: var(--light);
    animation: lineGrow 1.5s ease infinite 1.5s;
}

/* ── SECTION BASE ── */
section {
    padding: 7rem 3rem;
}

.section-label {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--grey);
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-label::before {
    content: '';
    display: block;
    width: 30px;
    height: 1px;
    background: var(--grey);
}

/* ── COMPÉTENCES ── */
#competences {
    background: var(--off);
}

.competences-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 0;
    border: 1px solid var(--light);
}

.skill-card {
    padding: 2.5rem;
    border-right: 1px solid var(--light);
    border-bottom: 1px solid var(--light);
    transition: background 0.2s;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease, background 0.2s;
}

.skill-card:hover {
    background: var(--white);
}

.skill-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.skill-icon {
    font-family: var(--mono);
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
    display: block;
}

.skill-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.skill-desc {
    font-size: 0.88rem;
    color: var(--grey);
    line-height: 1.65;
    margin-bottom: 1.25rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag {
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    padding: 0.25rem 0.6rem;
    border: 1px solid var(--light);
    color: var(--grey);
    background: var(--white);
}

/* ── RÉALISATIONS ── */
#realisations {
    background: var(--white);
}

.realisations-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 4rem;
}

.realisations-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.projects-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.project-item {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: start;
    padding: 2rem 0;
    border-top: 1px solid var(--light);
    gap: 2rem;
    cursor: default;
    transition: all 0.2s;
    opacity: 0;
    transform: translateX(-15px);
    transition: opacity 0.5s ease, transform 0.5s ease, padding 0.2s;
}

.project-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.project-item:hover {
    padding-left: 1rem;
}

.project-item:last-child {
    border-bottom: 1px solid var(--light);
}

.project-num {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--grey);
    padding-top: 0.25rem;
}

.project-info {}

.project-name {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 0.35rem;
}

.project-desc {
    font-size: 0.87rem;
    color: var(--grey);
    line-height: 1.6;
    max-width: 550px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.75rem;
}

.project-link {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--grey);
    text-decoration: none;
    padding-top: 0.25rem;
    white-space: nowrap;
    transition: color 0.2s;
}

.project-link:hover { color: var(--black); }

/* ── À PROPOS ── */
#apropos {
    background: var(--black);
    color: var(--white);
}

#apropos .section-label {
    color: #555;
}

#apropos .section-label::before {
    background: #555;
}

.apropos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
}

.apropos-title {
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 2rem;
}

.apropos-title strong {
    font-weight: 600;
}

.apropos-text {
    font-size: 0.95rem;
    color: #888;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.apropos-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #222;
}

.stat-num {
    font-family: var(--mono);
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.8rem;
    color: #555;
    line-height: 1.4;
}

/* ── CONTACT ── */
#contact {
    background: var(--white);
    text-align: center;
    padding: 8rem 3rem;
}

.contact-label {
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--grey);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.contact-label::before,
.contact-label::after {
    content: '';
    display: block;
    width: 30px;
    height: 1px;
    background: var(--grey);
}

.contact-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 300;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: 1.5rem;
}

.contact-title em {
    font-style: italic;
    color: var(--grey);
}

.contact-sub {
    font-size: 1rem;
    color: var(--grey);
    margin-bottom: 3rem;
}

.contact-email {
    font-family: var(--mono);
    font-size: 1.1rem;
    color: var(--black);
    text-decoration: none;
    border-bottom: 1px solid var(--black);
    padding-bottom: 2px;
    transition: color 0.2s, border-color 0.2s;
    display: inline-block;
    margin-bottom: 4rem;
}

.contact-email:hover {
    color: var(--grey);
    border-color: var(--grey);
}

/* ── FOOTER ── */
footer {
    border-top: 1px solid var(--light);
    padding: 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copy {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--grey);
    letter-spacing: 0.05em;
}

.footer-made {
    font-family: var(--mono);
    font-size: 0.68rem;
    color: var(--light);
    letter-spacing: 0.05em;
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes lineGrow {
    0%   { transform: scaleY(0); transform-origin: top; }
    50%  { transform: scaleY(1); transform-origin: top; }
    100% { transform: scaleY(1); transform-origin: top; }
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .nav-links { display: none; }
    section { padding: 5rem 1.5rem; }
    .hero { padding: 7rem 1.5rem 4rem; }
    .apropos-grid { grid-template-columns: 1fr; gap: 3rem; }
    .project-item { grid-template-columns: 50px 1fr; }
    .project-link { display: none; }
    footer { flex-direction: column; gap: 0.5rem; text-align: center; }
}