:root {
    --primary: #00ff88;
    --secondary: #60efff;
    --bg: #08080a;
    --card-bg: rgba(255, 255, 255, 0.03);
}

body {
    margin: 0;
    background-color: var(--bg);
    color: white;
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
    cursor: none;
}

/* Curseur */
#cursor-follower {
    position: fixed;
    width: 25px;
    height: 25px;
    background: white;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: difference;
    box-shadow: 0 0 20px rgba(255,255,255,0.5);
    transition: transform 0.15s ease-out;
}

/* Orbes de fond */
.orb {
    position: fixed;
    width: 600px;
    height: 600px;
    filter: blur(120px);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}
.orb-1 { background: var(--primary); top: -200px; right: -100px; }
.orb-2 { background: var(--secondary); bottom: -200px; left: -100px; }

.container { max-width: 1100px; margin: 0 auto; padding: 60px 20px; }

/* Header */
header { text-align: center; margin-bottom: 100px; }
h1 { font-size: clamp(3rem, 10vw, 6rem); font-weight: 900; margin: 0; background: linear-gradient(to right, #fff, #888); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.subtitle { font-size: 1.2rem; opacity: 0.7; margin-top: 10px; }

.btn-download {
    display: inline-block;
    margin-top: 30px;
    padding: 18px 40px;
    background: white;
    color: black;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 800;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.btn-download:hover { transform: scale(1.1) rotate(-2deg); background: var(--primary); }

/* Gallerie Postcards */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 120px;
}

.postcard {
    background: #fdfdfd;
    padding: 15px 15px 45px 15px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
    transform: rotate(var(--rot, -2deg));
    transition: transform 0.1s ease-out;
}
.postcard:nth-child(even) { --rot: 2deg; }
.postcard img { width: 100%; aspect-ratio: 4/3; object-fit: cover; filter: sepia(0.2) contrast(1.1); }
.caption { font-family: 'Permanent Marker', cursive; color: #222; text-align: center; font-size: 1.5rem; margin-top: 15px; }

/* Section Installation */
.install-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 40px;
    padding: 60px 40px;
}

.install-card h2 { font-size: 2.5rem; margin-bottom: 40px; text-align: center; font-weight: 900; }

.install-category {
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.install-category h3 { color: var(--primary); font-size: 1.4rem; margin-bottom: 20px; }

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.step-item {
    background: rgba(255,255,255,0.03);
    padding: 25px;
    border-radius: 20px;
    position: relative;
    border: 1px solid rgba(255,255,255,0.05);
}

.step-num {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    color: var(--secondary);
    opacity: 0.3;
    margin-bottom: 10px;
}

.step-item p { margin: 0; line-height: 1.6; opacity: 0.9; }

/* Boutons d'action */
.btn-action {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 20px;
    border: 2px solid var(--secondary);
    color: var(--secondary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    font-size: 0.9rem;
    transition: 0.3s;
}
.btn-action:hover { background: var(--secondary); color: black; }
.btn-action.primary { border-color: var(--primary); color: var(--primary); }
.btn-action.primary:hover { background: var(--primary); color: black; }

footer { text-align: center; margin-top: 80px; opacity: 0.4; font-size: 0.9rem; }

/* Reveal Animation */
.reveal { opacity: 0; transform: translateY(30px); transition: 1s cubic-bezier(0.2, 1, 0.3, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

@media (max-width: 768px) {
    body { cursor: auto; }
    #cursor-follower { display: none; }
    .install-card { padding: 40px 20px; }
}