:root {
    --bg-color: #000000;
    --card-bg: #0a0a0a;
    --neon-green: #39FF14; /* El verde neón exacto de DS Branding */
    --text-white: #ffffff;
    --text-gray: #888888;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-white);
    line-height: 1.6;
    scroll-behavior: smooth;
}

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

/* Nav */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 5%;
    background: rgba(0, 0, 0, 0.95);
    position: fixed;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid #111;
}

.logo {
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: 3px;
    font-family: 'Inter', sans-serif;
}

.logo .ds { color: var(--neon-green); text-shadow: 0 0 10px var(--neon-green); }

.nav-links a { color: var(--text-white); text-decoration: none; margin-left: 25px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; }

.btn-nav { border: 1px solid var(--neon-green); padding: 10px 20px; border-radius: 2px; color: var(--neon-green) !important; transition: 0.3s; }
.btn-nav:hover { background: var(--neon-green); color: #000 !important; }

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 10%;
    background: radial-gradient(circle at center, #0d1a0d 0%, #000000 100%);
}

h1 { font-family: 'Playfair Display', serif; font-size: 4rem; margin-bottom: 25px; line-height: 1.1; }

.neon-text { color: var(--neon-green); text-shadow: 0 0 20px rgba(57, 255, 20, 0.6); }

.hero p { font-size: 1.2rem; color: var(--text-gray); max-width: 650px; margin: 0 auto 40px; }

.btn-main { background: var(--neon-green); color: #000; padding: 18px 35px; text-decoration: none; font-weight: 700; border-radius: 2px; margin-right: 15px; box-shadow: 0 0 15px rgba(57, 255, 20, 0.3); }

/* Secciones */
.section-padding { padding: 120px 0; }
.section-title { text-align: center; font-size: 2.8rem; margin-bottom: 60px; font-family: 'Playfair Display', serif; }

.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; }

.service-card {
    background: var(--card-bg);
    padding: 50px 40px;
    border-radius: 4px;
    border: 1px solid #151515;
    transition: 0.4s;
}

.service-card:hover { border-color: var(--neon-green); transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }

.service-card h3 { color: var(--neon-green); margin: 20px 0 15px; text-transform: uppercase; letter-spacing: 1px; }

/* Acordeón */
.accordion { max-width: 850px; margin: 0 auto; }
details { background: #050505; margin-bottom: 15px; border: 1px solid #111; }
summary { padding: 25px; cursor: pointer; font-weight: 700; display: flex; justify-content: space-between; border-left: 3px solid transparent; }
details[open] summary { border-left: 3px solid var(--neon-green); color: var(--neon-green); }

footer { padding: 60px; text-align: center; color: #333; border-top: 1px solid #111; }