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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    background-color: #0f172a;
    color: #ffffff;
    line-height: 1.6;
}

img {
    display: block;
    max-width: 100%;
}

a {
    text-decoration: none;
    color: inherit;
}

/* =========================
   VARIABLES
========================= */
:root {
    --bg-main: #0f172a;
    --bg-dark: #020617;
    --bg-card: #1e293b;
    --text-main: #ffffff;
    --text-soft: #d1d5db;
    --text-muted: #e5e7eb;
    --accent: #38bdf8;
    --border-light: rgba(56, 189, 248, 0.25);
    --border-strong: rgba(56, 189, 248, 0.35);
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.15);
    --shadow-accent: 0 10px 30px rgba(56, 189, 248, 0.3);
    --radius-sm: 10px;
    --radius-md: 15px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
}

/* =========================
   HEADER / NAVBAR
========================= */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 20px;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

header.shrink {
    padding: 8px 15px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    height: 50px;
    width: auto;
    display: block;
}

nav h1 {
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent);
    font-size: 2.2rem;
    white-space: nowrap;
}

.nav-links,
nav ul {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 20px;
}

nav ul li {
    margin-left: 0;
}

nav a {
    color: var(--text-main);
    transition: color var(--transition);
}

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

.lang {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang button {
    padding: 6px 12px;
    background: var(--bg-card);
    color: var(--text-main);
    border: none;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}

.lang button:hover {
    background: var(--accent);
    color: #000000;
    transform: translateY(-2px);
}

header.shrink nav {
    gap: 8px;
}

header.shrink nav h1 {
    font-size: 1.6rem;
}

header.shrink nav ul {
    gap: 10px;
}

header.shrink .lang button {
    padding: 4px 8px;
    font-size: 0.9rem;
}

/* =========================
   HERO
========================= */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
    text-align: center;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.15;
    background: linear-gradient(90deg, var(--accent), #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    margin-bottom: 20px;
    max-width: 950px;
}

/* =========================
   TITRES GÉNÉRAUX
========================= */
h2 {
    position: relative;
    display: inline-block;
    font-size: 2.2rem;
    margin-bottom: 30px;
}

h2::after {
    content: "";
    display: block;
    width: 60%;
    height: 3px;
    margin: 10px auto 0;
    background: var(--accent);
    border-radius: 10px;
}

/* =========================
   BOUTONS
========================= */
.btn {
    display: inline-block;
    margin: 10px;
    padding: 12px 22px;
    background: var(--accent);
    color: #000000;
    border-radius: var(--radius-sm);
    font-weight: bold;
    letter-spacing: 1px;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 0 15px var(--accent);
}

/* =========================
   SECTIONS
========================= */
.section {
    padding: 80px 20px;
    text-align: center;
    scroll-margin-top: 100px;
}

/* =========================
   GRILLES / BLOCS
========================= */
.projects,
.about-highlights,
.skills {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.skills span {
    padding: 10px 15px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

/* =========================
   CARTES
========================= */
.project-card,
.highlight-card,
.project-card2 {
    width: 300px;
    max-width: 100%;
    padding: 25px;
    background: linear-gradient(145deg, var(--bg-card), var(--bg-main));
    border: 1px solid var(--accent);
    border-radius: var(--radius-md);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover,
.highlight-card:hover,
.project-card2:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: var(--shadow-accent);
    border-color: #ffffff;
}

.project-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 15px;
}

/* =========================
   ABOUT
========================= */
.about-box {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.about-description {
    max-width: 900px;
    margin: 0 auto 35px;
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-muted);
}

.highlight-card {
    border-color: var(--border-strong);
}

.highlight-card h3 {
    margin-bottom: 10px;
    color: var(--text-main);
    font-size: 1.1rem;
}

.highlight-card p {
    color: var(--text-soft);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* =========================
   CONTACT
========================= */
#contact p {
    margin: 10px 0;
}

/* =========================
   FOOTER
========================= */
footer {
    margin-top: 40px;
    padding: 20px;
    text-align: center;
    background: var(--bg-dark);
}

/* =========================
   ANIMATIONS
========================= */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* =========================
   MOBILE
========================= */
@media (max-width: 768px) {
    header {
        padding: 15px;
    }

    nav {
        flex-direction: column;
        gap: 15px;
        padding: 10px 0;
    }

    nav h1 {
        font-size: 2rem;
        text-align: center;
    }

    nav ul,
    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .nav-links {
        overflow: hidden;
        max-height: 300px;
        opacity: 1;
        transition: opacity 0.3s ease, max-height 0.3s ease, margin 0.3s ease;
    }

    .nav-links.hide-mobile-menu {
        max-height: 0;
        opacity: 0;
        margin: 0;
    }

    .lang {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .lang button {
        margin-left: 0;
    }

    .hero {
        min-height: auto;
        padding: 60px 20px;
    }

    .hero h2 {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero p {
        font-size: 1rem;
        line-height: 1.6;
    }

    h2 {
        font-size: 1.8rem;
    }

    .projects,
    .about-highlights,
    .skills {
        flex-direction: column;
        align-items: center;
    }

    .project-card,
    .highlight-card,
    .project-card2 {
        width: 90%;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .section {
        padding: 50px 15px;
    }

    .about-box {
        padding: 30px 20px;
    }

    .about-description {
        font-size: 1rem;
    }

    footer {
        padding: 15px;
    }
}