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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
}

/* ---------- HEADER ---------- */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    gap: 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    height: 50px;
}

.logo img {
    max-width: 200px;
    height: auto;
    display: block;
    mix-blend-mode: multiply;
    filter: contrast(1.2) brightness(1.1);
}

.btn-acceso {
    padding: 12px 32px;
    background: #ffffff;
    color: #034520;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.btn-acceso:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
    background: #f0f0f0;
}

.btn-acceso:active {
    transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
    .verde {
        padding: 16px 20px;
    }

    .logo img {
        max-width: 150px;
    }

    .btn-acceso {
        padding: 10px 20px;
        font-size: 11px;
    }
}