:root {
    --black: #0e0e0e;
    --white: #ffffff;
    --military-green: #3a5f4b;
    --gray: #cfcfcf;
    --light-gray: #f5f5f5;
}

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

/* BASE */
body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--white);
    color: var(--black);
    line-height: 1.6;
}


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

/* HEADER */
.header {
    background-color: var(--black);
    color: var(--white);
    text-align: center;
    padding: 3rem 1.5rem;
}

.header h1 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: 2px;
}

.header p {
    margin-top: 0.8rem;
    font-size: 1.1rem;
    opacity: 0.85;
}

/* NAV */
.nav {
    background-color: var(--black);
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.nav a {
    color: var(--white);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: var(--military-green);
}

/* HERO */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;
}

/* OVERLAY */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(94, 255, 102, 0.6),
        rgba(19, 18, 18, 0.85)
    );
    z-index: 2;
}

/* CONTENIDO */
.hero .container,
.hero-content {
    position: relative;
    z-index: 3;
    max-width: 900px;
    padding: 0 1rem;
}

.hero h2 {
    font-size: clamp(2rem, 4vw, 2.6rem);
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.primary-btn {
    background: var(--military-green);
    color: var(--white);
    border: none;
    padding: 0.8rem 2rem;
    margin-top: 1.5rem;
    font-size: 1rem;
    cursor: pointer;
}

.primary-btn:hover {
    opacity: 0.9;
}

/* MAIN */
.main-content {
    padding: 4rem 3rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    border: 1px solid var(--gray);
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--military-green);
    transform: translateY(5px);
}

/* SERVICES */
.services {
    background: #f5f5f5;
    padding: 4rem 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.2rem;
    margin-top: 2rem;
}

.service-item {
    background: var(--white);
    border-left: 4px solid var(--military-green);
    padding: 1.2rem;
    font-weight: 500;
}

/* FOOTER */
.site-footer {
    background: var(--black);
    color: var(--gray);
    text-align: center;
    padding: 1.5rem 0;
    font-size: 0.9rem;
}