:root {
    --bg-color: #050505;
    --text-color: #f5f5f7;
    --accent-color: #ffffff;
    --card-bg: #111111;
    --gray-text: #888888;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
}

/* Fondo Interactivo */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at var(--x, 50%) var(--y, 50%), #1a1a1a 0%, #050505 50%);
    transition: background 0.1s ease;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    padding: 1.5rem 10%;
    position: fixed;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(15px);
}

.logo { font-weight: 700; letter-spacing: 1px; }

.nav-links { display: flex; list-style: none; gap: 2rem; }
.nav-links a { color: var(--gray-text); text-decoration: none; transition: 0.3s; }
.nav-links a:hover { color: white; }

/* Hero & Typewriter */
.hero { height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; }
h1 { font-size: 4rem; }

.typewriter::after {
    content: '|';
    animation: blink 0.7s infinite;
    color: var(--accent-color);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.btn {
    display: inline-block;
    margin-top: 2rem;
    padding: 0.8rem 2rem;
    border: 1px solid white;
    color: white;
    text-decoration: none;
    transition: 0.4s;
}

.btn:hover { background: white; color: black; }

/* Proyectos */
.section { padding: 100px 10%; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2.5rem; margin: 2rem 0; }
.card { background: var(--card-bg); padding: 1.5rem; border-radius: 12px; border: 1px solid #222; }
.card-img { height: 180px; background-size: cover; border-radius: 8px; margin-bottom: 1rem; filter: grayscale(1); transition: 0.5s; }
.card:hover .card-img { filter: grayscale(0); }

.subsection-title { margin-top: 4rem; font-size: 2rem; border-left: 4px solid white; padding-left: 1rem; }

/* Imágenes de Referencia */
.p1 { background-image: url('https://picsum.photos/id/1/600/400'); }
.p2 { background-image: url('https://picsum.photos/id/20/600/400'); }
.p3 { background-image: url('https://picsum.photos/id/30/600/400'); }
.p4 { background-image: url('https://picsum.photos/id/40/600/400'); }

.reveal { opacity: 0; transform: translateY(30px); transition: 0.8s all ease; }
.reveal.active { opacity: 1; transform: translateY(0); }

footer { padding: 3rem; text-align: center; color: var(--gray-text); border-top: 1px solid #111; }